LT6011/LT6012
1
60112fc
Typical applicaTion
FeaTures DescripTion
Dual/Quad 135µA, 14nV/√Hz,
Rail-to-Rail Output
Precision Op Amp
The LT
®
6011/LT6012 op amps combine low noise and high
precision input performance with low power consumption
and rail-to-rail output swing.
Input offset voltage is trimmed to less than 60µV. The low
drift and excellent long-term stability guarantee a high ac-
curacy over temperature and time. The 300pA maximum
input bias current and 120dB minimum voltage gain further
maintain this precision over operating conditions.
The LT6011/LT6012 work on any power supply voltage
from 2.7V to 36V and draw only 135µA of supply current
on a 5V supply. The output swings to within 40mV of
either supply rail, making the amplifier a good choice for
low voltage single supply applications.
The LT6011/LT6012 are specified at 5V and ±15V supplies
and from –40°C to 85°C. The LT6011 (dual) is available
in SO-8, MS8 and space saving 3mm × 3mm DFN pack-
ages. The LT6012 (quad) is available in SO-14 and 16-pin
SSOP packages.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
Low Power Programmable Output Range 16-Bit SoftSpan™ DAC
applicaTions
n 60µV Maximum Offset Voltage
n 300pA Maximum Input Bias Current
n 135µA Supply Current per Amplifier
n Rail-to-Rail Output Swing
n 120dB Minimum Voltage Gain, VS = ±15V
n 0.8µV/°C Maximum VOS Drift
n 14nV/√Hz Input Noise Voltage
n 2.7V to ±18V Supply Voltage Operation
n Operating Temperature Range: –40°C to 85°C
n Space Saving 3mm × 3mm DFN Package
n Thermocouple Amplifiers
n Precision Photo Diode Amplifiers
n Instrumentation Amplifiers
n Battery-Powered Precision Systems
n Low Voltage Precision Systems
–
+
1/2 LT6011
VS+
VS+
VS–
–
+
1/2 LT6011
16-BIT DAC
LTC1592
RCOM
1
R1
2
VCC
0.1µF
9
R2
R2
R1
16
ROFS
3
7
5
6
REF
15
RFB
IOUT1
VOUT
4
5V
5
1
2
3
IOUT2
AGND
GND
CLR
CS/LD
SCK
SDI
SDO
6
7
8
14
13
12
11
10
C2
270pF
C1
270pF
SUPPLY CURRENT ≅ 1.6mA TO 4mA
DEPENDING ON CODE
6011 TA01
8
4
LT1236-5
20V Output Step Response
5V/DIV
0V
5V/DIV
0V
100µs/DIV 6011 TA01b
LT6011/LT6012
2
60112fc
absoluTe MaxiMuM raTings
Total Supply Voltage (V+ to V–) .................................40V
Differential Input Voltage (Note 2) ............................10V
Input Voltage ...................................................... V+ to V–
Input Current (Note 2) .......................................... ±10mA
Output Short-Circuit Duration (Note 3) ............ Indefinite
(Note 1)
TOP VIEW
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
5
6
7
8
4
3
2
1OUT A
–IN A
+IN A
V–
V+
OUT B
–IN B
+IN B
B
A
TJMAX = 150°C, θJA = 43°C/W
UNDERSIDE METAL CONNECTED TO V–
(PCB CONNECTION OPTIONAL)
1
2
3
4
8
7
6
5
TOP VIEW
V+
OUT B
–IN B
+IN B
OUT A
–IN A
+IN A
V–
S8 PACKAGE
8-LEAD PLASTIC SO
B
A
TJMAX = 150°C, θJA = 190°C/W
1
2
3
4
8
7
6
5
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
V+
OUT B
–IN B
+IN B
OUT A
–IN A
+IN A
V–B
A
TJMAX = 150°C, θJA = 220°C/W
TOP VIEW
S PACKAGE
14-LEAD PLASTIC SO
1
2
3
4
5
6
7
14
13
12
11
10
9
8
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
+
–
+
–
+
–
+
–
A
B
D
C
TJMAX = 150°C, θJA = 110°C/W
TOP VIEW
GN PACKAGE
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
NC
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
NC
+
–
+
–
+
–
+
–
A
B
D
C
TJMAX = 150°C, θJA = 135°C/W
Operating Temperature Range (Note 4)....–40°C to 85°C
Specified Temperature Range (Note 5) ....–40°C to 85°C
Maximum Junction Temperature .......................... 150°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................... 300°C
package/orDer inForMaTion
LT6011/LT6012
3
60112fc
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE
LT6011CDD#PBF LT6011CDD#TRPBF LACD 8-Lead (3mm × 3mm) Plastic DFN 0°C to 70°C
LT6011IDD#PBF LT6011IDD#TRPBF LACD 8-Lead (3mm × 3mm) Plastic DFN –40°C to 85°C
LT6011ACDD#PBF LT6011ACDD#TRPBF LACD 8-Lead (3mm × 3mm) Plastic DFN 0°C to 70°C
LT6011AIDD#PBF LT6011AIDD#TRPBF LACD 8-Lead (3mm × 3mm) Plastic DFN –40°C to 85°C
LT6011CS8#PBF LT6011CS8#TRPBF 6011 8-Lead Plastic SO 0°C to 70°C
LT6011IS8#PBF LT6011IS8#TRPBF 6011I 8-Lead Plastic SO –40°C to 85°C
LT6011ACS8#PBF LT6011ACS8#TRPBF 6011A 8-Lead Plastic SO 0°C to 70°C
LT6011AIS8#PBF LT6011AIS8#TRPBF 6011AI 8-Lead Plastic SO –40°C to 85°C
LT6011CMS8#PBF LT6011CMS8#TRPBF LTCGC 8-Lead Plastic MSOP 0°C to 70°C
LT6011IMS8#PBF LT6011IMS8#TRPBF LTCGC 8-Lead Plastic MSOP –40°C to 85°C
LT6012CS#PBF LT6012CS#TRPBF LT6012CS 14-Lead Plastic SO 0°C to 70°C
LT6012IS#PBF LT6012IS#TRPBF LT6012IS 14-Lead Plastic SO –40°C to 85°C
LT6012ACS#PBF LT6012ACS#TRPBF LT6012ACS 14-Lead Plastic SO 0°C to 70°C
LT6012AIS#PBF LT6012AIS#TRPBF LT6012AIS 14-Lead Plastic SO –40°C to 85°C
LT6012CGN#PBF LT6012CGN#TRPBF 6012 16-Lead Plastic SSOP 0°C to 70°C
LT6012IGN#PBF LT6012IGN#TRPBF 6012I 16-Lead Plastic SSOP –40°C to 85°C
LT6012ACGN#PBF LT6012ACGN#TRPBF 6012A 16-Lead Plastic SSOP 0°C to 70°C
LT6012AIGN#PBF LT6012AIGN#TRPBF 6012AI 16-Lead Plastic SSOP –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
LT6011/LT6012
4
60112fc
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VOS Input Offset Voltage (Note 8) LT6011AS8, LT6012AS
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
20 60
85
110
µV
µV
µV
LT6011ADD, LT6012AGN
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
25 85
135
170
µV
µV
µV
LT6011S8, LT6012S
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
25 75
100
125
µV
µV
µV
LT6011DD, LT6012GN, LT6011MS8
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
30 125
175
210
µV
µV
µV
∆VOS/∆TInput Offset Voltage Drift (Note 6) LT6011AS8, LT6011S8, LT6012AS,LT6012S
LT6011ADD,LT6011DD, LT6012AGN,
LT6012GN, LT6011MS8
l
l
0.2
0.2
0.8
1.2
µV/°C
µV/°C
IOS Input Offset Current (Note 8) LT6011AS8, LT6011ADD, LT6012AS,
LT6012AGN
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
20
300
450
600
pA
pA
pA
LT6011S8, LT6011DD, LT6012S,
LT6012GN, LT6011MS8
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
150
900
1200
1500
pA
pA
pA
IBInput Bias Current (Note 8) LT6011AS8, LT6011ADD, LT6012AS,
LT6012AGN
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
20
±300
±450
±600
pA
pA
pA
LT6011S8, LT6011DD, LT6012S,
LT6012GN, LT6011MS8
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
150
±900
±1200
±1500
pA
pA
pA
Input Noise Voltage 0.1Hz to 10Hz 400 nVP-P
enInput Noise Voltage Density f = 1kHz 14 nV/√Hz
inInput Noise Current Density f = 1kHz, Unbalanced Source Resistance 0.1 pA/√Hz
RIN Input Resistance Common Mode, VCM = 1V to 3.8V
Differential
10 120
20
GΩ
MΩ
CIN Input Capacitance 4 pF
VCM Input Voltage Range (Positive)
Input Voltage Range (Negative)
Guaranteed by CMRR
Guaranteed by CMRR
l
l
3.8 4
0.7
1
V
V
CMRR Common Mode Rejection Ratio VCM = 1V to 3.8V l107 135 dB
Minimum Supply Voltage Guaranteed by PSRR l2.4 2.7 V
PSRR Power Supply Rejection Ratio VS = 2.7V to 36V, VCM = 1/2VSl112 135 dB
AVOL Large-Signal Voltage Gain RL = 10k, VOUT = 1V to 4V
RL = 2k, VOUT = 1V to 4V
l
l
300
250
2000
2000
V/mV
V/mV
Channel Separation VOUT = 1V to 4V l110 140 dB
LT6011/LT6012
5
60112fc
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; unless otherwise specified. (Note 5)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VOUT Maximum Output Swing
(Positive, Referred to V+)
No Load, 50mV Overdrive
l
35 55
65
mV
mV
ISOURCE = 1mA, 50mV Overdrive
l
120 170
220
mV
mV
Maximum Output Swing
(Negative, Referred to 0V)
No Load, 50mV Overdrive
l
40 55
65
mV
mV
ISINK = 1mA, 50mV Overdrive
l
150 225
275
mV
mV
ISC Output Short-Circuit Current (Note 3) VOUT = 0V, 1V Overdrive, Source
l
10
4
14 mA
mA
VOUT = 5V, –1V Overdrive, Sink
l
10
4
21 mA
mA
SR Slew Rate AV = –10, RF = 50k, RG = 5k
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
0.06
0.05
0.04
0.09 V/µs
V/µs
V/µs
GBW Gain Bandwidth Product f = 10kHz
l
250
225
330 kHz
kHz
tsSettling Time AV = –1, 0.01%, VOUT = 1.5V to 3.5V 45 µs
tr
, tfRise Time, Fall Time AV = 1, 10% to 90%, 0.1V Step 1 µs
∆VOS Offset Voltage Match (Note 7) LT6011AS8, LT6012AS
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
50 120
170
220
µV
µV
µV
LT6011ADD, LT6012AGN
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
50 170
270
340
µV
µV
µV
LT6011S8, LT6012S
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
50 150
200
250
µV
µV
µV
LT6011DD, LT6012GN, LT6011MS8
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
60 250
350
420
µV
µV
µV
∆IBInput Bias Current Match (Note 7) LT6011AS8, LT6011ADD, LT6012AS,
LT6012AGN
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
50
600
900
1200
pA
pA
pA
LT6011S8, LT6011DD, LT6012S,
LT6012GN, LT6011MS8
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
1800
2400
3000
pA
pA
pA
∆CMRR Common Mode Rejection Ratio
Match (Note 7)
l101 135 dB
∆PSRR Power Supply Rejection Ratio
Match (Note 7)
l106 135 dB
ISSupply Current per Amplifier
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
135 150
190
210
µA
µA
µA
LT6011/LT6012
6
60112fc
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = ±15V, VCM = 0V; RL to 0V; unless otherwise specified. (Note 5)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VOS Input Offset Voltage (Note 8) LT6011AS8, LT6012AS
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
30 135
160
185
µV
µV
µV
LT6011ADD, LT6012AGN
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
35 160
210
225
µV
µV
µV
LT6011S8, LT6012S
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
35 150
175
200
µV
µV
µV
LT6011DD, LT6012GN, LT6011MS8
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
40 200
250
275
µV
µV
µV
∆VOS/∆TInput Offset Voltage Drift
(Note 6)
LT6011AS8, LT6011S8, LT6012AS, LT6012S
LT6011ADD, LT6011DD, LT6012AGN, LT6012GN, LT6011MS8
l
l
0.2
0.2
0.8
1.3
µV/°C
µV/°C
IOS Input Offset Current (Note 8) LT6011AS8, LT6011ADD, LT6012AS LT6012AGN
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
20 300
450
600
pA
pA
pA
LT6011S8, LT6011DD, LT6012S, LT6012GN, LT6011MS8
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
150 900
1200
1500
pA
pA
pA
IBInput Bias Current (Note 8) LT6011AS8, LT6011ADD, LT6012AS, LT6012AGN
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
20 ±300
±450
±600
pA
pA
pA
LT6011S8, LT6011DD, LT6012S, LT6012GN, LT6011MS8
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
150 ±900
±1200
±1500
pA
pA
pA
Input Noise Voltage 0.1Hz to 10Hz 400 nVP-P
enInput Noise Voltage Density f = 1kHz 13 nV/√Hz
inInput Noise Current Density f = 1kHz, Unbalanced Source Resistance 0.1 pA/√Hz
RIN Input Resistance Common Mode, VCM = ±13.5V
Differential
50 400
20
GΩ
MΩ
CIN Input Capacitance 4 pF
VCM Input Voltage Range Guaranteed by CMRR l±13.5 ±14 V
CMRR Common Mode Rejection Ratio VCM = –13.5V to 13.5V
l
115
112
135
135
dB
dB
Minimum Supply Voltage Guaranteed by PSRR l±1.2 ±1.35 V
PSRR Power Supply Rejection Ratio VS = ±1.35V to ±18V l112 135 dB
AVOL Large-Signal Voltage Gain RL = 10k, VOUT = –13.5V to 13.5V
l
1000
600
2000 V/mV
V/mV
RL = 5k, VOUT = –13.5V to 13.5V
l
500
300
1500 V/mV
V/mV
Channel Separation VOUT = –13.5V to 13.5V l120 140 dB
VOUT Maximum Output Swing
(Positive, Referred to V+)
No Load, 50mV Overdrive
l
45 80
100
mV
mV
ISOURCE = 1mA, 50mV Overdrive
l
140 195
240
mV
mV
Maximum Output Swing
(Negative, Referred to V–)
No Load, 50mV Overdrive
l
45 80
100
mV
mV
ISINK = 1mA, 50mV Overdrive
l
150 250
300
mV
mV
LT6011/LT6012
7
60112fc
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = ±15V, VCM = 0V; RL to 0V; unless otherwise specified. (Note 5)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ISC Output Short-Circuit Current
(Note 3)
VOUT = 0V, 1V Overdrive (Source)
l
10
5
15 mA
mA
VOUT = 0V, –1V Overdrive (Sink)
l
10
5
20 mA
mA
SR Slew Rate AV = –10, RF = 50k, RG = 5k
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
0.08
0.07
0.05
0.11 V/µs
V/µs
V/µs
GBW Gain Bandwidth Product f = 10kHz
l
275
250
350 kHz
kHz
tsSettling Time AV = –1, 0.01%, VOUT = 0V to 10V 85 µs
tr
, tfRise Time, Fall Time AV = 1, 10% to 90%, 0.1V Step 1 µs
∆VOS Offset Voltage Match (Note 7) LT6011AS8, LT6012AS
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
50 270
320
370
µV
µV
µV
LT6011ADD, LT6012AGN
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
50 320
420
450
µV
µV
µV
LT6011S8, LT6012S
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
70 300
350
400
µV
µV
µV
LT6011DD, LT6012GN, LT6011MS8
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
80 400
500
550
µV
µV
µV
∆IBInput Bias Current Match
(Note 7)
LT6011AS8, LT6011ADD, LT6012AS, LT6012AGN
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
50 600
900
1200
pA
pA
pA
LT6011S8, LT6011DD, LT6012S, LT6012GN,
LT6011MS8
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
1800
2400
3000
pA
pA
pA
∆CMRR Common Mode Rejection Ratio
Match (Note 7)
l109 135 dB
∆PSRR Power Supply Rejection Ratio
Match (Note 7)
l106 135 dB
ISSupply Current per Amplifier
TA = 0°C to 70°C
TA = –40°C to 85°C
l
l
260 330
380
400
µA
µA
µA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The inputs are protected by back-to-back diodes and internal
series resistors. If the differential input voltage exceeds 10V, the input
current must be limited to less than 10mA.
Note 3: A heat sink may be required to keep the junction temperature
below absolute maximum ratings.
Note 4: Both the LT6011C/LT6012C and LT6011I/LT6012I are guaranteed
functional over the operating temperature range of –40°C to 85°C.
Note 5: The LT6011C/LT6012C are guaranteed to meet the specified
performance from 0°C to 70°C and is designed, characterized and
expected to meet specified performance from –40°C to 85°C but is not
tested or QA sampled at these temperatures. The LT6011I/LT6012I are
guaranteed to meet specified performance from –40°C to 85°C.
Note 6: This parameter is not 100% tested.
Note 7: Matching parameters are the difference between any two
amplifiers. ∆CMRR and ∆PSRR are defined as follows: (1) CMRR
and PSRR are measured in µV/V for the individual amplifiers. (2) The
difference between matching amplifiers is calculated in µV/V. (3) The result
is converted to dB.
Note 8: The specifications for VOS, IB, and IOS depend on the grade and on
the package. The following table clarifies the notations.
STANDARD GRADE A GRADE
S8 Package LT6011S8 LT6011AS8
DFN Package LT6011DD LT6011ADD
S14 Package LT6012S LT6012AS
GN16 Package LT6012GN LT6012AGN
MS8 Package LT6011MS8 N/A
LT6011/LT6012
8
60112fc
Typical perForMance characTerisTics
Distribution of Input Bias Current Input Bias Current vs Temperature
Input Bias Current
vs Input Common Mode Voltage
en, in vs Frequency
Total Input Noise
vs Source Resistance 0.1Hz to 10Hz Noise
Distribution of Input Offset Voltage
Input Offset Voltage
vs Temperature
Offset Voltage
vs Input Common Mode Voltage
INPUT OFFSET VOLTAGE (µV)
–90
0
PERCENT OF UNITS (%)
5
15
20
25
–50 –10 10 90
6011 G01
10
–70 –30 30 50 70
30 VS = 5V, 0V
TA = 25°C
LT6011S8,
LT6012S
TEMPERATURE (°C)
–50
–125
OFFSET VOLTAGE (µV)
–100
–50
–25
0
125
50
050 75
6011 G02
–75
75
100
25
–25 25 100 125
VS = 5V, 0V
REPRESENTATIVE UNITS
INPUT COMMON MODE VOLTAGE (V)
–15
120
100
80
60
40
20
0
–20 0 10
6011 G03
–10 –5 5 15
OFFSET VOLTAGE (µV)
TA = 85°C
TA = 25°C
TA = –40°C
VS = ±15V
TYPICAL PART
INPUT BIAS CURRENT (pA)
–400
0
PERCENT OF UNITS (%)
5
15
20
25
–300 –100 0 400
6011 G04
10
–200 100 200 300
VS = 5V, 0V
TA = 25°C
LT6011A,
LT6012A
TEMPERATURE (°C)
–50
–200
INPUT BIAS CURRENT (pA)
0
400
600
800
50
1600
6011 G05
200
0
–25 75 100
25
IB–
IB+
125
1000
1200
1400
VS = 5V, 0V
TYPICAL PART
COMMON MODE VOLTAGE (V)
–15
–200
INPUT BIAS CURRENT (pA)
–100
0
100
200
300
–10 –5 0 5
1635 G06
10 15
VS = ±15V
TYPICAL PART
TA = 85°C
13.9V
–14.2V
TA = 25°C
TA = –40°C
FREQUENCY (Hz)
1
10
INPUT VOLTAGE NOISE DENSITY (nV/√Hz)
INPUT CURRENT NOISE DENSITY (fA/√Hz)
100 100
1000
10 100 1000
6011 G07
CURRENT NOISE
UNBALANCED
SOURCE RESISTORS
VOLTAGE NOISE
VS = ±15V
TA = 25°C
SOURCE RESISTANCE (Ω)
100 1k 10k 100k 1M 10M
0.0001
TOTAL INPUT NOISE (µV/√Hz)
0.01
10
100M
6011 G08
0.001
0.1
1
TOTAL NOISE
RESISTOR NOISE ONLY
VS = 5V, 0V
TA = 25°C
f = 1kHz
UNBALANCED
SOURCE RESISTORS
TIME (SEC)
0
NOISE VOLTAGE (0.2µV/DIV)
8
6011 G09
2 4 6 1071 3 5 9
VS = ±15V
TA = 25°C
LT6011/LT6012
9
60112fc
Typical perForMance characTerisTics
Output Saturation Voltage
vs Load Current (Output Low) Supply Current vs Supply Voltage Warm-Up Drift
THD + Noise vs Frequency THD + Noise vs Frequency Settling Time vs Output Step
0.01Hz to 1Hz Noise
Output Voltage Swing
vs Temperature
Output Saturation Voltage
vs Load Current (Output High)
TIME (SEC)
0
NOISE VOLTAGE (0.2µV/DIV)
80
6011 G10
20 40 60 1007010 30 50 90
VS = ±15V
TA = 25°C
TEMPERATURE (°C)
–50
OUTPUT VOLTAGE SWING (mV)
–20
25
6011 G11
40
–25 0 50
20
V–
V+
–40
–60
60
75 100 125
VS = 5V, 0V
NO LOAD
OUTPUT HIGH
OUTPUT LOW
LOAD CURRENT (mA)
0.01
0.01
OUTPUT HIGH SATURATION VOLTAGE (V)
0.1
1
0.1 1 10
6011 G12
TA = 85°C
TA = 25°C
VS = 5V, 0V
TA = –40°C
LOAD CURRENT (mA)
0.01
0.01
OUTPUT LOW SATURATION VOLTAGE (V)
0.1
1
0.1 1 10
6011 G13
TA = 85°C
TA = 25°C
VS = 5V, 0V
TA = –40°C
SUPPLY VOLTAGE (±V)
0
SUPPLY CURRENT (µA)
300
400
500
16
6011 G14
200
100
250
350
450
150
50
042 86 12 14 18
10 20
PER AMPLIFIER
TA = 85°C
TA = –40°C
TA = 25°C
TIME AFTER POWER-ON (SECONDS)
0
CHANGE IN OFFSET VOLTAGE (µV)
1
2
3
30 60 90 120
6011 G15
150
±15V
±2.5V
SETTLING TIME (µs)
0
0
OUTPUT STEP (V)
2
6
8
10
20 40 50 90
6011 G18
4
10 30 60 70 80
VS = ±15V
AV = 1
0.1% 0.01%
FREQUENCY (Hz)
10
0.0001
THD + NOISE (%)
0.01
10
1k 10k100 100k
6011 G16
0.001
0.1
1
VS = 5V, 0V
VOUT = 2VP-P
TA = 25°C
AV = 1: RL = 10k
AV = –1: RF = RG = 10k
AV = –1
AV = 1
FREQUENCY (Hz)
10
0.0001
THD + NOISE (%)
0.01
10
1k 10k100
6011 G17
0.001
0.1
1
VS = ±15V
VIN = 20VP-P
TA = 25°C
AV = –1
AV = 1
LT6011/LT6012
10
60112fc
Typical perForMance characTerisTics
PSRR vs Frequency Output Impedance vs Frequency Open-Loop Gain vs Frequency
Gain and Phase vs Frequency Gain vs Frequency, AV = 1 Gain vs Frequency, AV = –1
Settling Time vs Output Step Channel Separation vs Frequency CMRR vs Frequency
SETTLING TIME (µs)
0
0
OUTPUT STEP (V)
2
6
8
10
20 40 50 90
6011 G19
4
10 30 60 70 80
VS = ±15V
AV = –1
0.1%
0.01%
FREQUENCY (Hz)
1 10
40
CHANNEL SEPARATION (dB)
60
80
100
120
100 1k 10k 100k 1M
6011 G20
20
0
140
160 VS = 5V, 0V
TA = 25°C
FREQUENCY (Hz)
1 10
40
COMMON MODE REJECTION RATIO (dB)
60
80
100
120
100 1k 10k 100k 1M
6011 G21
20
0
140
160 TA = 25°C
VS = ±15V
VS = 5V, 0V
FREQUENCY (Hz)
0.1
0
POWER SUPPLY REJECTION RATIO (dB)
80
100
120
140
1 10 100 1k 10k 100k 1M
6011 G22
60
40
20
VS = 5V, 0V
TA = 25°C
–PSRR
+PSRR
FREQUENCY (Hz)
1
OUTPUT IMPEDANCE (Ω)
1000
0.1
10
100
1 100 1k 10k 100k 1M
6011 G23
0.01 10
VS = 5V, 0V
TA = 25°C
AV = 100
AV = 10
AV = 1
FREQUENCY (Hz)
20
120
100
80
60
40
–20
0
OPEN-LOOP GAIN (dB)
140
0.01 10 100 1k 10k 100k 1M 10M
6011 G24
–40 0.1 1
VS = 5V, 0V
TA = 25°C
RL = 10k
FREQUENCY (Hz)
–10
OPEN-LOOP GAIN (dB)
PHASE SHIFT (DEG)
50
60
–20
–30
40
10
30
20
0
1k 100k 1M 10M
6011 G25
–40
–80
–240
–120
–160
–200
–280
10k
PHASE
GAIN
VS = 5V, 0V
TA = 25°C
RL = 10k
FREQUENCY (Hz)
1k
–20
GAIN (dB)
0
5
10
10k 100k 1M
6011 G26
–5
–10
–15
VS = 5V, 0V
TA = 25°C
CL = 500pF
CL = 50pF
FREQUENCY (Hz)
1k
–20
GAIN (dB)
0
5
10
10k 100k 1M
6011 G27
–5
–10
–15
VS = 5V, 0V
TA = 25°C
CL = 500pF
CL = 50pF
LT6011/LT6012
11
60112fc
Typical perForMance characTerisTics
Small-Signal Transient Response Large-Signal Transient Response Rail-to-Rail Output Swing
20mV/DIV
2µs/DIV 6011 G28AV = 1
2V/DIV 0V
50µs/DIV 6011 G29AV = –1
VS = ±15V
1V/DIV
5V
0V
100µs/DIV 6011 G30AV = –1
VS = 5V, 0V
applicaTions inForMaTion
Preserving Input Precision
Preserving the input accuracy of the LT6011/LT6012 re-
quires that the applications circuit and PC board layout do
not introduce errors comparable to or greater than the 25µV
typical offset of the amplifiers. Temperature differentials
across the input connections can generate thermocouple
voltages of 10’s of microvolts so the connections to the
input leads should be short, close together and away from
heat dissipating components. Air currents across the board
can also generate temperature differentials.
The extremely low input bias currents (20pA typical) al-
low high accuracy to be maintained with high impedance
sources and feedback resistors. The LT6011/LT6012 low
input bias currents are obtained by a cancellation circuit
on-chip. This causes the resulting IB+ and IB– to be uncor-
related, as implied by the IOS specification being comparable
to IB. Do not try to balance the input resistances in each
input lead; instead keep the resistance at either input as
low as possible for maximum accuracy.
Leakage currents on the PC board can be higher than the
input bias current. For example, 10GΩ of leakage between
a 15V supply lead and an input lead will generate 1.5nA!
Surround the input leads with a guard ring driven to the
same potential as the input common mode to avoid exces-
sive leakage in high impedance applications.
Input Protection
The LT6011/LT6012 feature on-chip back-to-back diodes
between the input devices, along with 500Ω resistors in
series with either input. This internal protection limits the
input current to approximately 10mA (the maximum al-
lowed) for a 10V differential input voltage. Use additional
external series resistors to limit the input current to 10mA
in applications where differential inputs of more than 10V
are expected. For example, a 1k resistor in series with each
input provides protection against 30V differential voltage.
Input Common Mode Range
The LT6011/LT6012 output is able to swing close to each
power supply rail (rail-to-rail out), but the input stage
is limited to operating between V– + 1V and V+ – 1.2V.
Exceeding this common mode range will cause the gain
to drop to zero, however, no phase reversal will occur.
Total Input Noise
The LT6011/LT6012 amplifier contributes negligible noise
to the system when driven by sensors (sources) with
impedance between 20kΩ and 1MΩ. Throughout this
range, total input noise is dominated by the 4kTRS noise
of the source. If the source impedance is less than 20kΩ,
the input voltage noise of the amplifier starts to contribute
LT6011/LT6012
12
60112fc
applicaTions inForMaTion
with a minimum noise of 14nV/√Hz for very low source
impedance. If the source impedance is more than 1MΩ, the
input current noise of the amplifier, multiplied by this high
impedance, starts to contribute and eventually dominate.
Total input noise spectral density can be calculated as:
vn(TOTAL) =en2+4kTRS+(inRS)2
where en = 14nV/√Hz , in = 0.1pA/√Hz and RS is the total
impedance at the input, including the source impedance.
Capacitive Loads
The LT6011/LT6012 can drive capacitive loads up to 500pF
in unity gain. The capacitive load driving capability increases
as the amplifier is used in higher gain configurations.
A small series resistance between the output and the
load further increases the amount of capacitance that the
amplifier can drive.
Rail-to-Rail Operation
The LT6011/LT6012 outputs can swing to within millivolts
of either supply rail, but the inputs can not. However, for
most op amp configurations, the inputs need to swing
less than the outputs. Figure 1 shows the basic op amp
configurations, lists what happens to the op amp inputs
and specifies whether or not the op amp must have rail-
to-rail inputs. Select a rail-to-rail input op amp only when
really necessary, because the input precision specifications
are usually inferior.
RG
VREF
NONINVERTING: AV = 1 + RF/RG
INPUTS MOVE BY AS MUCH AS
VIN, BUT THE OUTPUT MOVES
MORE
INPUT MAY NOT HAVE TO BE
RAIL-TO-RAIL
NONINVERTING: AV = 1
INPUTS MOVE BY AS MUCH AS
OUTPUT
INPUT MUST BE RAIL-TO-RAIL
FOR OVERALL CIRCUIT
RAIL-TO-RAIL PERFORMANCE
INVERTING: AV = –RF/RG
OP AMP INPUTS DO NOT MOVE,
BUT ARE FIXED AT DC BIAS
POINT VREF
INPUT DOES NOT HAVE TO BE
RAIL-TO-RAIL
VIN
RF
–
+VIN
VREF
RF
RG
–
+VIN
6011 F01
–
+
Figure 1. Some Op Amp Configurations Do Not Require Rail-to-Rail Inputs to Achieve Rail-to-Rail Outputs
LT6011/LT6012
13
60112fc
siMpliFieD scheMaTic
(One Amplifier)
6011 SS
Q22
Q16
Q3
Q7
Q8
C
B
A
B
A
Q15
V+
V–
Q1 Q2
D2D1
Q11
Q17
Q21
Q4
Q6
Q5
C2
Q12
D3
D4
D5
Q14 Q20
Q19
Q13
Q18
R3 R4 R6
R5
RC1
R1
500Ω
R2
500Ω
C1
C3
+IN
–IN
OUT
Q9 Q10
LT6011/LT6012
14
60112fc
package DescripTion
DD Package
8-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1698 Rev C)
3.00 ±0.10
(4 SIDES)
NOTE:
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1)
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
ON TOP AND BOTTOM OF PACKAGE
0.40 ± 0.10
BOTTOM VIEW—EXPOSED PAD
1.65 ± 0.10
(2 SIDES)
0.75 ±0.05
R = 0.125
TYP
2.38 ±0.10
14
85
PIN 1
TOP MARK
(NOTE 6)
0.200 REF
0.00 – 0.05
(DD8) DFN 0509 REV C
0.25 ± 0.05
2.38 ±0.05
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
1.65 ±0.05
(2 SIDES)2.10 ±0.05
0.50
BSC
0.70 ±0.05
3.5 ±0.05
PACKAGE
OUTLINE
0.25 ± 0.05
0.50 BSC
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
LT6011/LT6012
15
60112fc
package DescripTion
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.016 – .050
(0.406 – 1.270)
.010 – .020
(0.254 – 0.508)× 45°
0°– 8° TYP
.008 – .010
(0.203 – 0.254)
SO8 0303
.053 – .069
(1.346 – 1.752)
.014 – .019
(0.355 – 0.483)
TYP
.004 – .010
(0.101 – 0.254)
.050
(1.270)
BSC
1234
.150 – .157
(3.810 – 3.988)
NOTE 3
8765
.189 – .197
(4.801 – 5.004)
NOTE 3
.228 – .244
(5.791 – 6.197)
.245
MIN .160 ±.005
RECOMMENDED SOLDER PAD LAYOUT
.045 ±.005
.050 BSC
.030 ±.005
TYP
INCHES
(MILLIMETERS)
NOTE:
1. DIMENSIONS IN
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
LT6011/LT6012
16
60112fc
package DescripTion
MS8 Package
8-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1660 Rev F)
MSOP (MS8) 0307 REV F
0.53 ± 0.152
(.021 ± .006)
SEATING
PLANE
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
0.18
(.007)
0.254
(.010)
1.10
(.043)
MAX
0.22 – 0.38
(.009 – .015)
TYP
0.1016 ± 0.0508
(.004 ± .002)
0.86
(.034)
REF
0.65
(.0256)
BSC
0° – 6° TYP
DETAIL “A”
DETAIL “A”
GAUGE PLANE
1 2 34
4.90 ± 0.152
(.193 ± .006)
8765
3.00 ± 0.102
(.118 ± .004)
(NOTE 3)
3.00 ± 0.102
(.118 ± .004)
(NOTE 4)
0.52
(.0205)
REF
5.23
(.206)
MIN
3.20 – 3.45
(.126 – .136)
0.889 ± 0.127
(.035 ± .005)
RECOMMENDED SOLDER PAD LAYOUT
0.42 ± 0.038
(.0165 ± .0015)
TYP
0.65
(.0256)
BSC
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
LT6011/LT6012
17
60112fc
package DescripTion
S14 Package
14-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
1
N
234
.150 – .157
(3.810 – 3.988)
NOTE 3
14 13
.337 – .344
(8.560 – 8.738)
NOTE 3
.228 – .244
(5.791 – 6.197)
12 11 10 9
567
N/2
8
.016 – .050
(0.406 – 1.270)
.010 – .020
(0.254 – 0.508)× 45°
0° – 8° TYP
.008 – .010
(0.203 – 0.254)
S14 0502
.053 – .069
(1.346 – 1.752)
.014 – .019
(0.355 – 0.483)
TYP
.004 – .010
(0.101 – 0.254)
.050
(1.270)
BSC
.245
MIN
N
1 2 3 N/2
.160 ±.005
RECOMMENDED SOLDER PAD LAYOUT
.045 ±.005
.050 BSC
.030 ±.005
TYP
INCHES
(MILLIMETERS)
NOTE:
1. DIMENSIONS IN
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
LT6011/LT6012
18
60112fc
package DescripTion
GN Package
16-Lead Plastic SSOP (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1641)
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
GN16 (SSOP) 0204
1 2 345678
.229 – .244
(5.817 – 6.198)
.150 – .157**
(3.810 – 3.988)
16 15 14 13
.189 – .196*
(4.801 – 4.978)
12 11 10 9
.016 – .050
(0.406 – 1.270)
.015 ±.004
(0.38 ±0.10) × 45°
0° – 8° TYP
.007 – .0098
(0.178 – 0.249)
.0532 – .0688
(1.35 – 1.75)
.008 – .012
(0.203 – 0.305)
TYP
.004 – .0098
(0.102 – 0.249)
.0250
(0.635)
BSC
.009
(0.229)
REF
.254 MIN
RECOMMENDED SOLDER PAD LAYOUT
.150 – .165
.0250 BSC.0165 ±.0015
.045 ±.005
* DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
INCHES
(MILLIMETERS)
NOTE:
1. CONTROLLING DIMENSION: INCHES
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
LT6011/LT6012
19
60112fc
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
revision hisTory
REV DATE DESCRIPTION PAGE NUMBER
C 01/12 Removed specific package information from the Absolute Maximum Ratings section.
Added a new Typical Application drawing.
2
20
(Revision history begins at Rev C)
LT6011/LT6012
20
60112fc
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
LINEAR TECHNOLOGY CORPORATION 2003
LT 0112 REV C • PRINTED IN USA
relaTeD parTs
Typical applicaTion
Low Power Hall Sensor Amplifier
–
+
LT1782 –
+
1/2 LT6011
VS
VS
VOUT
7.87k
1%
VS = 3V TO 18V
IS = ~600µA
VOUT = ~40mV/mT
1, 2
4
6
10k
OFFSET
ADJUST
1
3
2
400Ω
×4
HALL ELEMENT
ASAHI-KASEI
HW-108A (RANK D)
www.asahi-kasei.co.jp
26.7k
1%
49.9k
49.9k
VS
4
1k
4
6011 TA02
7
1
8
6
3
2
5
100k
1%
LT1790-1.25
–
+
1/2 LT6011
PART NUMBER DESCRIPTION COMMENTS
LT1112/LT1114 Dual/Quad Low Power, Picoamp Input Precision Op Amp 250pA Input Bias Current
LT1880 Rail-to-Rail Output, Picoamp Input Precision Op Amp SOT-23
LT1881/LT1882 Dual/Quad Rail-to-Rail Output, Picoamp Input Precision Op Amp CLOAD Up to 1000pF
LT1884/LT1885 Dual/Quad Rail-to-Rail Output, Picoamp Input Precision Op Amp 9.5nV/√Hz Input Noise
LT1991/LT1996 Precision, 100µA Gain-Selectable Amplifier LT6011-Like Op Amp with 0.04% Matched Resistors
LT6010 Single 135µA, 14nV/√Hz Rail-to-Rail Output Precision Op Amp 35µV Maximum VOS; 100pA Maximum IB; Shutdown
LT6013/LT6014 Single/Dual 145µA, 9.5nV/√Hz, Rail-to-Rail Output Precision Op Amp AV ≥ 5 Stable; 1.4MHz GBW
Buffering an 18-Bit 1Msps SAR ADC
+
–
1/2 LT6011
15V
5V
0V
0V
5V
–15V
6011 TA03
–
+
1/2 LT6011
49Ω
49Ω
10nF
10nF
18-BIT 1Msps
47µF
IN+
IN–
LTC2378-18
REF VDD
2.5V
LTC6655-5
15V
+
–
10VP-P
DIFFERENTIAL
INL = ±1LSB AT 18-BITS
SNR = 100dB
THD = –107dB AT 750Hz
NOTE: SUPPLIES AS LOW AS –1V, 7V PROVIDES ENOUGH
HEADROOM FOR FULL-SCALE OPERATION.
