LTC2057HVIMS8#PBF [Linear]
LTC2057/LTC2057HV - High Voltage, Low Noise Zero-Drift Operational Amplifier; Package: SO; Pins: 8; Temperature Range: -40°C to 85°C;
| 型号： | LTC2057HVIMS8#PBF |
| 厂家： | 
Linear |
| 描述： | LTC2057/LTC2057HV - High Voltage, Low Noise Zero-Drift Operational Amplifier; Package: SO; Pins: 8; Temperature Range: -40°C to 85°C 放大器 斩波器 光电二极管 |
| 文件： | 总32页 (文件大小：1659K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LTC2057/LTC2057HV
High Voltage, Low Noise
Zero-Drift Operational Amplifier
FeaTures
DescripTion
n
Supply Voltage Range
The LTC®2057 is a high voltage, low noise, zero-drift op-
erational amplifier that offers precision DC performance
over a wide supply range of 4.75V to 36V or 4.75V to
60V for the LTC2057HV. Offset voltage and 1/f noise are
suppressed, allowingthisamplifiertoachieveamaximum
offset voltage of 4μV and a DC to 10Hz input noise volt-
n
4.75V to 36V (LTC2057)
4.75V to 60V (LTC2057HV)
n
n
n
Offset Voltage: 4μV (Maximum)
Offset Voltage Drift: 0.015μV/°C
(Maximum, –40°C to 125°C)
n
Input Noise Voltage
age of 200nV
(typ). The LTC2057’s self-calibrating
P-P
n
200nV , DC to 10Hz (Typ)
P-P
circuitryresultsinlowoffsetvoltagedriftwithtemperature,
0.015μV/°C (max), and zero-drift over time. The amplifier
also features an excellent power supply rejection ratio
(PSRR) of 160dB and a common mode rejection ratio
(CMRR) of 150dB (typ).
n
11nV/√Hz, 1kHz (Typ)
–
+
n
n
n
n
n
n
n
n
n
Input Common Mode Range: V – 0.1V to V – 1.5V
Rail-to-Rail Output
Unity Gain Stable
Gain Bandwidth Product: 1.5MHz (Typ)
Slew Rate: 0.45V/μs (Typ)
The LTC2057 provides rail-to-rail output swing and an
A
: 150dB (Typ)
VOL
–
–
input common mode range that includes the V rail (V –
PSRR: 160dB (Typ)
CMRR: 150dB (Typ)
Shutdown Mode
+
0.1V to V – 1.5V). In addition to low offset and noise, this
amplifier features a 1.5MHz (typ) gain-bandwidth product
and a 0.45V/μs (typ) slew rate.
applicaTions
Wide supply range, combined with low noise, low offset,
and excellent PSRR and CMRR make the LTC2057 and
LTC2057HV well suited for high dynamic-range test,
measurement, and instrumentation systems.
L, LT, LTC, LTM, Linear Technology, Over-The-Top, and the Linear logo are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
n
High Resolution Data Acquisition
n
Reference Buffering
n
Test and Measurement
n
Electronic Scales
n
Thermocouple Amplifiers
n
Strain Gauges
n
Low-Side Current Sense
n
Automotive Monitors and Control
Typical applicaTion
Wide Input Range Precision Gain-of-100 Instrumentation Amplifier
Input Offset Voltage
vs Supply Voltage
30V
5
4
5 TYPICAL UNITS
= V /2
+
–IN
V
CM
T = 25°C
A
S
LTC2057HV
3
–
1ꢀV
2
1
–30V
30V
7
ꢀ
9
10
11.5k
11.5k
M9
M3
M1
V
CC
0
232Ω
6
–1
–2
–3
–4
–5
LT1991A
REO
V
ꢃUT
ꢃUT
1
2
3
P1
P3
P9
V
EE
5
ꢂ
–
–1ꢀV
0
5
20 25
40 45 50 55 60 65
LTC2057HV
2057 TA01a
10 15
30 35
(V)
V
S
+IN
+
INPUT CM RANGE = 2ꢀV ꢁITH ꢂV ꢃO ꢃUTPUT ꢄꢁING
CMRR = 130dB (TYP), INPUT ꢃOOꢄET VꢃLTAGE = 1µV (TYP)
2057 TA01b
–30V
2057f
1
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
absoluTe MaxiMuM raTings
(Note 1)
+
–
Total Supply Voltage (V to V )
Output Short-Circuit Duration.......................... Indefinite
Operating Temperature Range (Note 2)
LTC2057I/LTC2057HVI........................–40°C to 85°C
LTC2057H/LTC2057HVH ................... –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)...................300°C
LTC2057 ..............................................................40V
LTC2057HV...........................................................65V
Input Voltage
–IN, +IN ...................................V – 0.3V to V + 0.3V
SD, SDCOM ............................V – 0.3V to V + 0.3V
Input Current
–
–
+
+
–IN, +IN ........................................................... 10mA
SD, SDCOM ..................................................... 10mA
Differential Input Voltage
–IN – +IN .............................................................. 6V
SD – SDCOM ........................................ –0.3V to 5.3V
pin conFiguraTion
TOP VIEW
9
V
SD
–IN
+IN
1
2
3
4
8
7
6
5
SDCOM
TOP VIEW
–
+
V
–
+
SD 1
–IN 2
8 SDCOM
+
–
+
7 V
OUT
NC
+IN
V
6 OUT
5 NC
3
4
–
–
V
MS8 PACKAGE
8-LEAD PLASTIC MSOP
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
T
= 150°C, θ = 163°C/W
JMAX
JA
T
= 150°C, θ = 43°C/W
JMAX
JA
–
EXPOSED PAD (PIN 9) IS V
PCB CONNECTION REQUIRED
TOP VIEW
TOP VIEW
SD
–IN
+IN
1
2
3
4
8
7
6
5
SDCOM
GRD
1
2
3
4
5
10 SD
+
–
+
–IN
+IN
9
8
7
6
SDCOM
V
–
+
+
V
OUT
NC
GRD
NC
OUT
–
V
–
V
MS PACKAGE
10-LEAD PLASTIC MSOP
= 150°C, θ = 160°C/W
JMAX JA
S8 PACKAGE
8-LEAD PLASTIC SO
T
T
= 150°C, θ = 120°C/W
JMAX
JA
2057f
2
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
orDer inForMaTion
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
LGCZ
PACKAGE DESCRIPTION
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
–40°C to 125°C
–40°C to 125°C
–40°C to 85°C
–40°C to 85°C
–40°C to 125°C
–40°C to 125°C
–40°C to 85°C
–40°C to 85°C
–40°C to 125°C
–40°C to 125°C
–40°C to 85°C
–40°C to 85°C
–40°C to 125°C
–40°C to 125°C
LTC2057IDD#PBF
LTC2057IDD#TRPBF
LTC2057HVIDD#TRPBF
LTC2057HDD#TRPBF
LTC2057HVHDD#TRPBF
LTC2057IMS8#TRPBF
LTC2057HVIMS8#TRPBF
LTC2057HMS8#TRPBF
LTC2057HVHMS8#TRPBF
LTC2057IMS#TRPBF
LTC2057HVIMS#TRPBF
LTC2057HMS#TRPBF
LTC2057HVHMS#TRPBF
LTC2057IS8#TRPBF
8-Lead Plastic DFN (3mm × 3mm)
8-Lead Plastic DFN (3mm × 3mm)
8-Lead Plastic DFN (3mm × 3mm)
8-Lead Plastic DFN (3mm × 3mm)
8-Lead Plastic MSOP
LTC2057HVIDD#PBF
LTC2057HDD#PBF
LTC2057HVHDD#PBF
LTC2057IMS8#PBF
LTC2057HVIMS8#PBF
LTC2057HMS8#PBF
LTC2057HVHMS8#PBF
LTC2057IMS#PBF
LGDB
LGCZ
LGDB
LTFGK
LTGDC
LTFGK
8-Lead Plastic MSOP
8-Lead Plastic MSOP
LTGDC
LTGCX
LTGCY
LTGCX
LTGCY
2057
8-Lead Plastic MSOP
10-Lead Plastic MSOP
LTC2057HVIMS#PBF
LTC2057HMS#PBF
LTC2057HVHMS#PBF
LTC2057IS8#PBF
10-Lead Plastic MSOP
10-Lead Plastic MSOP
10-Lead Plastic MSOP
8-Lead Plastic Small Outline
8-Lead Plastic Small Outline
8-Lead Plastic Small Outline
8-Lead Plastic Small Outline
LTC2057HVIS8#PBF
LTC2057HS8#PBF
LTC2057HVHS8#PBF
LTC2057HVIS8#TRPBF
LTC2057HS8#TRPBF
LTC2057HVHS8#TRPBF
2057HV
2057
2057HV
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
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/
2057f
3
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
(LTC2057/LTC2057HV) The l denotes the specifications which apply
elecTrical characTerisTics
over the full operating temperature range, otherwise specifications are at TA = 25°C. Unless otherwise noted, VS = 2.5V; VCM = VOUT = 0V.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
4
UNITS
μV
V
Input Offset Voltage (Note 3)
0.5
OS
l
∆V /∆T
OS
Average Input Offset Voltage Drift (Note 3) –40°C to 125°C
0.015
μV/°C
I
Input Bias Current (Note 4)
–40°C to 85°C
30
60
200
300
3.5
pA
pA
nA
B
l
l
–40°C to 125°C
I
Input Offset Current (Note 4)
–40°C to 85°C
400
460
1.0
pA
pA
nA
OS
n
l
l
–40°C to 125°C
i
Input Noise Current Spectral Density
Input Noise Voltage Spectral Density
Input Noise Voltage
1kHz
170
11
fA/√Hz
nV/√Hz
e
e
1kHz
n
DC to 10Hz
200
nV
P-P
n P-P
C
Differential Input Capacitance
3
3
pF
pF
IN
Common Mode Input Capacitance
–
+
CMRR
PSRR
Common Mode Rejection Ratio (Note 5)
Power Supply Rejection Ratio (Note 5)
Open Loop Voltage Gain (Note 5)
Output Voltage Swing Low
V
= V – 0.1V to V – 1.5V
114
111
150
160
150
dB
dB
CM
l
l
l
–40°C to 125°C
V = 4.75V to 36V
133
129
dB
dB
S
–40°C to 125°C
–
+
A
V
V
= V +0.2V to V –0.2V, R =1kΩ
118
117
dB
dB
VOL
OUT
L
–40°C to 125°C
–
– V
No Load
0.2
35
10
15
mV
mV
mV
mV
mV
mV
mV
OL
l
l
–40°C to 125°C
I
= 1mA
60
SINK
–40°C to 125°C
90
I
= 5mA
180
270
365
415
SINK
l
l
–40°C to 85°C
–40°C to 125°C
+
V – V
Output Voltage Swing High
No Load
0.2
50
10
15
75
115
345
470
535
mV
mV
mV
mV
mV
mV
mV
OH
l
l
–40°C to 125°C
I
= 1mA
SOURCE
–40°C to 125°C
I
= 5mA
250
SOURCE
l
l
–40°C to 85°C
–40°C to 125°C
I
Short Circuit Current
Rising Slew Rate
17
26
1.2
mA
V/μs
V/μs
MHz
kHz
SC
SR
SR
A = –1, R = 10kΩ
V L
RISE
FALL
Falling Slew Rate
A = –1, R = 10kΩ
0.45
1.5
V
L
GBW
Gain Bandwidth Product
Internal Chopping Frequency
Supply Current
f
I
100
0.8
C
S
No Load
–40°C to 85°C
–40°C to 125°C
1.21
1.50
1.70
mA
mA
mA
l
l
In Shutdown Mode
–40°C to 85°C
–40°C to 125°C
2.5
μA
μA
μA
l
l
5.6
6.5
l
l
l
l
l
V
V
Shutdown Threshold (SD – SDCOM) Low –40°C to 125°C
Shutdown Threshold (SD – SDCOM) High –40°C to 125°C
0.8
V
V
SDL
SDH
2
–
+
SDCOM Voltage Range
SD Pin Current
–40°C to 125°C
–40°C to 125°C, V – V
V
V –2V
V
I
I
= 0
= 0
–2
–0.5
0.5
μA
μA
SD
SD
SDCOM
SDCOM
SDCOM Pin Current
–40°C to 125°C, V – V
2
SDCOM
SD
2057f
4
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
elecTrical characTerisTics
(LTC2057/LTC2057HV) The l denotes the specifications which apply
over the full operating temperature range, otherwise specifications are at TA = 25°C. Unless otherwise noted, VS = 15V; VCM = VOUT = 0V.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
4.5
UNITS
μV
V
Input Offset Voltage (Note 3)
Average Input Offset Voltage Drift (Note 3)
Input Bias Current (Note 4)
0.5
OS
l
∆V /∆T
OS
–40°C to 125°C
0.015
μV/°C
I
B
30
60
200
360
6.0
pA
pA
nA
l
l
–40°C to 85°C
–40°C to 125°C
I
Input Offset Current (Note 4)
400
480
1.5
pA
pA
nA
OS
n
l
l
–40°C to 85°C
–40°C to 125°C
i
Input Noise Current Spectral Density
Input Noise Voltage Spectral Density
Input Noise Voltage
1kHz
150
12
fA/√Hz
nV/√Hz
e
e
1kHz
n
DC to 10Hz
210
nV
P-P
n P-P
C
Differential Input Capacitance
3
3
pF
pF
IN
Common Mode Input Capacitance
–
+
CMRR
PSRR
Common Mode Rejection Ratio (Note 5)
Power Supply Rejection Ratio (Note 5)
Open Loop Voltage Gain (Note 5)
Output Voltage Swing Low
V
= V – 0.1V to V – 1.5V
128
126
150
160
150
dB
dB
CM
l
l
l
–40°C to 125°C
V = 4.75V to 36V
133
129
dB
dB
S
–40°C to 125°C
–
+
A
V
V
= V +0.25V to V –0.25V, R =10kΩ
130
128
dB
dB
VOL
OUT
L
–40°C to 125°C
–
– V
No Load
2
12
45
mV
mV
mV
mV
mV
mV
mV
OL
l
l
–40°C to 125°C
I
= 1mA
35
60
SINK
–40°C to 125°C
100
255
360
435
I
= 5mA
175
SINK
l
l
–40°C to 85°C
–40°C to 125°C
+
V – V
Output Voltage Swing High
No Load
3
15
45
75
125
335
465
560
mV
mV
mV
mV
mV
mV
mV
OH
l
l
–40°C to 125°C
I
= 1mA
50
SOURCE
–40°C to 125°C
I
= 5mA
235
SOURCE
l
l
–40°C to 85°C
–40°C to 125°C
I
Short Circuit Current
Rising Slew Rate
19
30
1.3
mA
V/μs
V/μs
MHz
kHz
SC
SR
SR
A = –1, R = 10kΩ
V L
RISE
FALL
Falling Slew Rate
A = –1, R = 10kΩ
0.45
1.5
V
L
GBW
Gain Bandwidth Product
Internal Chopping Frequency
Supply Current
f
I
100
0.88
C
S
No Load
–40°C to 85°C
–40°C to 125°C
1.35
1.65
1.83
mA
mA
mA
l
l
In Shutdown Mode
–40°C to 85°C
–40°C to 125°C
3
μA
μA
μA
l
l
8
9
l
l
l
l
l
V
V
Shutdown Threshold (SD – SDCOM) Low
Shutdown Threshold (SD – SDCOM) High
SDCOM Voltage Range
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
0.8
V
V
SDL
2
SDH
+
V–
V –2V
V
I
I
SD Pin Current
–40°C to 125°C, V – V
= 0
= 0
–2.0
–0.5
0.5
µA
µA
SD
SD
SDCOM
SDCOM
SDCOM Pin Current
–40°C to 125°C, V – V
2
SDCOM
SD
2057f
5
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
elecTrical characTerisTics
(LTC2057HV) The l denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at TA = 25°C. Unless otherwise noted, VS = 30V; VCM = VOUT = 0V.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
5
UNITS
μV
V
OS
Input Offset Voltage (Note 3)
0.5
l
∆V /∆T
OS
Average Input Offset Voltage Drift (Note 3) –40°C to 125°C
0.025
μV/°C
I
Input Bias Current (Note 4)
–40°C to 85°C
30
60
200
455
11
pA
pA
nA
B
l
l
–40°C to 125°C
I
Input Offset Current (Note 4)
–40°C to 85°C
400
500
3
pA
pA
nA
OS
n
l
l
–40°C to 125°C
i
Input Noise Current Spectral Density
Input Noise Voltage Spectral Density
Input Noise Voltage
1kHz
130
13
fA/√Hz
nV/√Hz
e
e
1kHz
n
DC to 10Hz
220
nV
P-P
n P-P
C
Differential Input Capacitance
3
3
pF
pF
IN
Common Mode Input Capacitance
–
+
CMRR
PSRR
Common Mode Rejection Ratio (Note 5)
Power Supply Rejection Ratio (Note 5)
Open Loop Voltage Gain (Note 5)
Output Voltage Swing Low
V
= V – 0.1V to V – 1.5V
133
131
150
160
150
dB
dB
CM
l
l
l
–40°C to 125°C
V = 4.75V to 60V
138
136
dB
dB
S
–40°C to 125°C
–
+
A
V
V
= V +0.25V to V – 0.25V, R = 10kΩ
135
130
dB
dB
VOL
OUT
L
–40°C to 125°C
–
– V
No Load
3
15
45
mV
mV
mV
mV
mV
mV
mV
OL
l
l
–40°C to 125°C
I
= 1mA
35
60
SINK
–40°C to 125°C
105
260
370
445
I
= 5mA
175
SINK
l
l
–40°C to 85°C
–40°C to 125°C
+
V – V
Output Voltage Swing High
No Load
3
15
45
75
130
335
475
575
mV
mV
mV
mV
mV
mV
mV
OH
l
l
–40°C to 125°C
I
= 1mA
50
SOURCE
–40°C to 125°C
I
= 5mA
235
SOURCE
l
l
–40°C to 85°C
–40°C to 125°C
I
Short Circuit Current
Rising Slew Rate
19
30
1.3
mA
V/μs
V/μs
MHz
kHz
SC
SR
SR
A = –1, R = 10kΩ
V L
RISE
FALL
Falling Slew Rate
A = –1, R = 10kΩ
0.45
1.5
V
L
GBW
Gain Bandwidth Product
Internal Chopping Frequency
Supply Current
f
100
0.90
C
IS
No Load
–40°C to 85°C
–40°C to 125°C
1.40
1.73
1.92
mA
mA
mA
l
l
In Shutdown Mode
–40°C to 85°C
–40°C to 125°C
3
μA
μA
μA
l
l
9
11
l
l
l
l
l
V
V
Shutdown Threshold (SD – SDCOM) Low –40°C to 125°C
Shutdown Threshold (SD – SDCOM) High –40°C to 125°C
0.8
V
V
SDL
2
SDH
–
+
SDCOM Voltage Range
SD Pin Current
–40°C to 125°C
–40°C to 125°C, V – V
V
V –2V
V
I
I
= 0
= 0
–2
–0.5
0.5
µA
µA
SD
SD
SDCOM
SDCOM
SDCOM Pin Current
–40°C to 125°C, V – V
2
SDCOM
SD
2057f
6
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
elecTrical characTerisTics
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 4: These specifications are limited by automated test system
capability. Leakage currents and thermocouple effects reduce test
accuracy. For tighter specifications, please contact LTC Marketing.
Note 5: Minimum specifications for these parameters are limited by
Note 2: The LTC2057I/LTC2057HVI are guaranteed to meet specified
performance from –40°C to 85°C. The LTC2057H/LTC2057HVH are
guaranteed to meet specified performance from –40°C to 125°C.
the capabilities of the automated test system, which has an accuracy of
approximately 10µV for V measurements. For reference, 10µV/60V is
OS
136dB, 10µV/30V is 130dB, and 10µV/5V is 114dB.
Note 3: These parameters are guaranteed by design. Thermocouple effects
preclude measurements of these voltage levels during automated testing.
V
is measured to a limit determined by test equipment capability.
OS
2057f
7
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
Typical perForMance characTerisTics
Input Offset Voltage Distribution
Input Offset Voltage Distribution
Input Offset Voltage Distribution
40
35
30
25
20
15
10
5
35
30
25
20
15
10
5
35
30
25
20
15
10
5
160 TYPICAL UNITS
160 TYPICAL UNITS
160 TYPICAL UNITS
V
= 2.5V
V
= 15V
V
= 30V
S
S
S
µ = –0.441 µV
µ = –0.432 µV
µ = –0.507 µV
σ = 0.452µV
σ = 0.525µV
σ = 0.548µV
0
0
0
–3 –2.5 –2 –1.5 –1 –0.5 0 0.5
(µV)
1
1.5
2
2.5
3
–3 –2.5 –2 –1.5 –1 –0.5 0 0.5
(µV)
1
1.5
2
2.5
3
–3 –2.5 –2 –1.5 –1 –0.5 0 0.5
(µV)
1 1.5 2 2.5 3
V
V
V
OS
OS
OS
2057 G01
2057 G02
2057 G03
Input Offset Voltage Drift
Distribution
Input Offset Voltage Drift
Distribution
Input Offset Voltage Drift
Distribution
90
80
70
60
50
40
30
20
10
0
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
160 TYPICAL UNITS
2ꢀ5V
160 TYPICAL UNITS
15V
160 TYPICAL UNITS
30V
V
=
V
=
V =
S
S
S
T
= –40°C TO 125°C
µ = 1ꢀ16nV/°C
T
= –40°C TO 125°C
µ = 1.29nV/°C
T
= –40°C TO 125°C
µ = 1.32nV/°C
A
A
A
σ = 0ꢀ97nV/°C
σ = 1.14nV/°C
σ = 1.26nV/°C
1
3
5
7
9
11 13 15 17 19
1
3
5
7
9
11 13 15 17 19
1
3
5
7
9
V
OS
11 13 15 17 19
TC (nV/°C)
2057 G06
V
TC (nV/°C)
V
TC (nV/°C)
OS
OS
2057 G04
2057 G05
Input Offset Voltage vs
Input Common Mode Voltage
Input Offset Voltage vs
Input Common Mode Voltage
Input Offset Voltage vs
Input Common Mode Voltage
5
4
5
4
5
4
5 TYPICAL UNITS
5 TYPICAL UNITS
5 TYPICAL UNITS
V
= 5V
V
= 30V
V
= 60V
S
S
S
T
= 25°C
T
= 25°C
T
= 25°C
A
A
A
3
3
3
2
2
2
1
1
1
0
0
0
–1
–2
–3
–4
–5
–1
–2
–3
–4
–5
–1
–2
–3
–4
–5
–1
1
3
4
5
0
10
20
25
30
0
20
40
50
60
0
2
5
15
(V)
10
30
(V)
V
(V)
V
V
CM
CM
CM
2057 G07
2057 G08
2057 G09
2057f
8
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
Typical perForMance characTerisTics
Input Offset Voltage
vs Supply Voltage
Long-Term Input Offset Voltage
Drift
Input Bias Current vs Temperature
5
4
5
4
100
V
CM
= 0V
5 TYPICAL UNITS
40 TYPICAL UNITS
V = 2ꢀ5V
S
V
V
V
= ±2.5V
= ±15V
= ±±0V
V
T
= V /2
S
S
S
CM
A
S
= 25°C
3
3
10
1
2
2
1
1
0
0
–1
–2
–3
–4
–5
–1
–2
–3
–4
–5
0.1
0.01
–50
0
50 75 100 125 150
TEMPERATURE (°C)
–25
25
0
5
20 25
40 45 50 55 60 65
1
100
10
TIME (HOURS)
1000
10 15
30 35
(V)
V
S
2057 G12
2057 G09
2057 G10
Input Bias Current vs Input
Common Mode Voltage
Input Bias Current vs Input
Common Mode Voltage
Input Bias Current
vs Supply Voltage
50
40
50
40
50
40
V
= 5V
= 25°C
V
= 30V, 60V
= 25°C
V = V /2
CM S
T = 25°C
A
S
A
S
A
T
T
I
(–IN), V = 60V
S
B
30
30
30
I
B
(–IN)
I
B
(–IN)
20
20
20
10
10
I
I
(–IN), V = 30V
10
B
B
S
0
0
0
–10
–20
–30
–40
–50
–10
–20
–30
–40
–50
(+IN), V = 30V
–10
–20
–30
–40
–50
S
I
B
(+IN)
40
I
(+IN)
B
I
(+IN), V = 60V
S
B
0
0.5
1.5
2.5
3
3.5
4
0
20
40
50
60
0
20
50
60
70
1
2
10
30
(V)
10
30
V
V
(V)
V
(V)
S
CM
CM
2057 G13
2057 G14
2057 G15
DC to 10Hz Voltage Noise
DC to 10Hz Voltage Noise
Input Voltage Noise Spectrum
35
30
25
20
15
10
5
V
=
2ꢀ5V
V = ±±0V
S
A
= +11
S
V
V
V
=
=
2.5V
30V
S
S
0
2057 G16
2057 G17
0.1
10
1k 10k 100k 1M
1
100
TIME (1s/DIV)
TIME (1s/DIV)
FREQUENCY (Hz)
2057 G18
2057f
9
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
Typical perForMance characTerisTics
Common Mode Rejection Ratio
vs Frequency
Input Current Noise Spectrum
0.25
0.20
0.15
0.10
0.05
0
120
100
80
60
40
20
0
A
= +11
V
V
= 30V
V
S
V
= ±2.5V
= ±±0V
= V /2
S
CM
S
V
S
0.1
1
10
100
1k
10k
100
1000
1k
10k
100k
1M
FREQUENCY (Hz)
FREQUENCY (Hz)
2057 G19
2057 G20
Power Supply Rejection Ratio
vs Frequency
Closed Loop Gain vs Frequency
120
100
80
50
40
V
=
15V
V
V
= 30V
CM
S
L
S
A
= +100
V
R
= 10kΩ
= V /2
S
30
A
= +10
V
+PSRR
20
60
10
40
0
–PSRR
10k
20
–10
–20
–30
A
= +1
V
0
A
= –1
V
–20
100
1M
10M
1k
100k
FREQUENCY (Hz)
10M
1k
100k
10k
1M
FREQUENCY (Hz)
2057 G21
2057 G22
Gain/Phase vs Frequency
Gain/Phase vs Frequency
80
70
150
120
90
80
70
150
120
90
PHASE
PHASE
60
60
50
60
50
60
40
30
40
30
30
0
30
0
GAIN
GAIN
20
–30
–60
–90
–120
–150
–180
–210
20
–30
–60
–90
–120
–150
–180
–210
10
10
0
0
V
= 2ꢀ5V
V
= 30V
–10
–20
–30
–40
S
L
–10
–20
–30
–40
S
L
R
= 1kΩ
R
= 1kΩ
C
L
C
L
= 50pF
= 200pF
C
L
C
L
= 50pF
= 200pF
10k
1M
100k
10M
10k
1M
100k
10M
FREQUENCY (Hz)
FREQUENCY (Hz)
2057 G23
2057 G24
2057f
10
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
Typical perForMance characTerisTics
Shutdown Transient
with Sinusoid Input
Shutdown Transient
with Sinusoid Input
4
3
2
1
0
4
3
2
1
0
V
=
30Vꢀ A = +1
V
V
=
2.5Vꢀ A = +1
V
SD – SDCOM
S
S
SD – SDCOM
I
I
SS
IN
OUT
SS
IN
OUT
V
V
V
V
0.4
0.3
0.2
0.1
0
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.1
–0.2
–10
10
20
TIME (µs)
50
–10
10
20
TIME (µs)
50
0
30
40
0
30
40
2057 G25
2057 G26
Start-Up Transient
with Sinusoid Input
Start-Up Transient
with Sinusoid Input
4
3
2
1
0
4
3
2
1
0
SD – SDCOM
0.4
0.4
0.3
0.2
0.1
0
I
SS
0.3
SD – SDCOM
V
V
IN
OUT
I
V
V
SS
IN
OUT
0.2
0.1
0.1
–0.1
–0.2
–0.3
–0.1
–0.2
–0.3
V
A
=
30V
V
A
= 2.5V
S
V
S
V
= +1
= +1
–10
10 20
TIME (µs)
70
0
30 40 50 60
–10
0
10 20 30 40 50 60 70
TIME (µs)
2057 G27
2057 G28
Closed Loop Output Impedance
vs Frequency
Closed Loop Output Impedance
vs Frequency
THD+N vs Amplitude
1000
100
10
1000
100
0.1
0.01
V
=
2.5V
V = 30V
S
S
A
= +100
V
10
1
A
= +100
V
A
= +10
V
A
= +10
V
1
0.001
0.0001
f
= 1kHz
IN
S
V
A
= +1
V
A
= 15V
V
0.1
0.01
A = +1
V
0.1
0.01
= +1
= 10kΩ
R
L
BW = 80kHz
100
10k
FREQUENCY (Hz)
10M
100
10k
FREQUENCY (Hz)
10M
0.01
1
10
1k
100k
1M
1k
100k
1M
0.1
OUTPUT AMPLITUDE (V
)
RMS
2057 G29
2057 G30
2057 G31
2057f
11
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
Typical perForMance characTerisTics
THD+N vs Frequency
Supply Current vs Supply Voltage
Supply Current vs Temperature
0.1
0.01
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
V
V
A
= 2V
15V
= +1
= 10kΩ
OUT
S
V
RMS
150°C
125°C
=
30ꢀ
R
L
85°C
BW = 80kHz
2.5ꢀ
25°C
15ꢀ
–40°C
–55°C
0.001
0.0001
10
1000
100
FREQUENCY (Hz)
10000
0
5
10 15 20 25 30 35 40 45 50 55 60
(V)
–60 –30
0
30
60
90 120 150
V
TEMPERATURE (°C)
S
2057 G32
2057 G33
2057 G34
Shutdown Supply Current
vs Supply Voltage
Supply Current vs Shutdown
Control Voltage
Supply Current vs Shutdown
Control Voltage
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
10
9
8
7
6
5
4
3
2
1
0
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
SD = SDCOM = V /2
V
=
2.5V
V =
30V
S
SDCOM = 0V
S
S
SDCOM = –2.5V
150°C
125°C
150°C
125°C
85°C
150°C
125°C
85°C
25°C
25°C
–40°C
–55°C
–40°C
–55°C
85°C
25°C
–55°C
–40°C
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5 5
0
5
10 15 20 25 30 35 40 45 50 55 60
(V)
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5 5
SD – SDCOM (V)
V
SD – SDCOM (V)
S
2057 G36
2057 G35
2057 G37
Shutdown Pin Current
Shutdown Pin Current
vs Supply Voltage
vs Shutdown Pin Voltage
No Phase Reversal
5
4
1.0
0.8
20
15
SD = SDCOM = V /2
V
=
30V
S
V
V
S
IN
OUT
I
150°C
SDCOM
SDCOM = 0V
I
25°C
3
0.6
SDCOM
10
I
–55°C
SDCOM
2
0.4
5
1
0.2
0
0
0
–1
–2
–3
–4
–5
–0.2
–0.4
–0.6
–0.8
–1.0
–5
I
–55°C
SD
SD
I
25°C
I
I
I
I
–50°C
–10
–15
–20
SD
A
V
V
= +1
V
S
–50°C
I
150°C
SDCOM
=
15V
1ꢀV
= 1kΩ
SD
125°C
SD
=
IN
R
IN
125°C
SDCOM
2057 G40
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0
5
10 15 20 25 30 35 40 45 50 55 60
(V)
0.2mS/DIV
SD – SDCOM (V)
V
S
2057 G38
2057 G39
2057f
12
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
Typical perForMance characTerisTics
Output Voltage Swing High
vs Load Current
Output Voltage Swing High
vs Load Current
Output Voltage Swing High
vs Load Current
10
1
100
10
100
V
=
2.5V
V
=
15V
V =
S
30V
S
S
150°C
125°C
85°C
10
1
1
0.1
150°C
125°C
–40°C
25°C
150°C
125°C
0.1
0.1
85°C
85°C
10m
1m
10m
1m
10m
1m
25°C
25°C
1
–40°C
–40°C
0.1
0.1m
0.1m
0.1m
0.001
0.01
0.1
1
10
100
0.001
0.01
0.1
10
100
0.001
0.01
1
10
100
I
(mA)
I
(mA)
I
(mA)
SOURCE
SOURCE
SOURCE
2057 G41
2057 G42
2057 G43
Output Voltage Swing Low
vs Load Current
Output Voltage Swing Low
vs Load Current
Output Voltage Swing Low
vs Load Current
100
10
10
1
100
10
V
= ±±0V
V
= 2.5V
V
=
15V
S
S
S
85°C
125°C
150°C
1
1
–40°C
150°C
125°C
85°C
0.1
150°C
125°C
85°C
–40°C
0.1
0.1
10m
1m
25°C
10m
1m
10m
1m
25°C
25°C
–40°C
0.1m
0.1m
0.1m
0.001
0.01
0.1
I
1
(mA)
10
100
0.001
0.01
0.1
1
(mA)
10
100
0.001
0.01
0.1
I
1
(mA)
10
100
I
SINK
SINK
SINK
2057 G46
2057 G44
2057 G45
Short-Circuit Current
vs Temperature
Short-Circuit Current
vs Temperature
Short-Circuit Current
vs Temperature
60
50
40
30
20
10
0
60
50
40
30
20
10
0
60
50
40
30
20
10
0
V
=
2ꢀ5V
V
=
15V
V = 30V
S
S
S
SOURCING
SOURCING
SOURCING
SINKING
SINKING
SINKING
–50 –25
0
25 50 75 100 125 150
–50 –25
0
25 50 75 100 125 150
–50 –25
0
25 50 75 100 125 150
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
2057 G47
2057 G48
2057 G49
2057f
13
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
Typical perForMance characTerisTics
Large Signal Response
Large Signal Response
Large Signal Response
12
10
8
0.6
0.4
6
4
V
V
A
C
= ±±0V
= ±10V
= +1
V
V
A
C
=
2.5V
0.5V
V
V
A
C
=
S
15V
5V
S
IN
V
S
=
=
IN
V
IN
V
= +1
= +1
= 200pF
= 200pF
= 200pF
L
L
L
6
4
0.2
2
2
0
0
0
–2
–4
–6
–8
–10
–12
–0.2
–0.4
–0.6
–2
–4
–6
–20
0
20 40 60 80 100 120 140 160
–4 –2
0
2
4
6
8
10 12 14 16
–10
0
10 20 30 40 50 60 70 80
TIME (µs)
TIME (µs)
TIME (µs)
2057 G52
2057 G50
2057 G51
Small Signal Response
Small Signal Response
Small Signal Response
70
50
70
50
70
50
C = 200pF
L
C
L
= 200pF
C
L
= 200pF
30
30
30
10
10
10
–10
–30
–50
–70
–10
–30
–50
–70
–10
–30
–50
–70
V
V
A
=
IN
V
30V
50mV
= +1
V
V
A
=
IN
V
15V
50mV
= +1
V
V
A
=
IN
V
2ꢀ5V
50mV
= +1
S
S
S
=
=
=
–2 –1
0
1
2
3
4
5
6
7
–2 –1
0
1
2
3
4
5
6
7
–2 –1
0
1
2
3
4
5
6
7
TIME (µs)
TIME (µs)
TIME (µs)
2057 G53
2057 G54
2057 G55
Small Signal Overshoot
vs Load Capacitance
Small Signal Overshoot
vs Load Capacitance
Small Signal Overshoot
vs Load Capacitance
40
35
30
25
20
15
10
5
40
35
30
25
20
15
10
5
40
35
30
25
20
15
10
5
V
V
A
=
2ꢀ5V
V
V
A
=
15V
V
V
A
= 30V
S
S
S
= 100mV
IN
= +1
V
= 100mV
IN
= +1
V
= 100mV
IN
= +1
V
+OS
+OS
+OS
–OS
–OS
–OS
0
0
0
10
100
(pF)
1000
10
100
(pF)
1000
10
100
(pF)
1000
C
C
C
L
L
L
2057 G56
2057 G57
2057 G58
2057f
14
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
Typical perForMance characTerisTics
Large Signal Settling Transient
Large Signal Settling Transient
2
1
0
2
1
0
12
10
8
10
A
= –1
V
F
S
8
R = 10k
V
= 15V
A
= –1
V
F
S
6
R = 10k
V
V
V
IN
OUT
OUT(AVG)
6
4
V
=
15V
V
V
V
4
2
IN
OUT
OUT(AVG)
2
0
0
–2
–4
–2
–5
0
5
10 15 20 25 30 35 40 45 50 55 60
–5
0
5
10 15 20 25 30 35 40 45 50 55 60
TIME (µs)
TIME (µs)
2057 G59
2057 G60
Output Overload Recovery
Output Overload Recovery
Output Overload Recovery
0.5
0
1
0
2
V
IN
0
V
V
IN
IN
–2
–1
V
A
=
2.5V
S
V
F
–0.5
= –100
R = 10kΩ
C
V
OUT
0
= 100pF
L
–5
0
V
OUT
–10
–15
–20
–3
0
–6
V
OUT
–9
V
A
=
15V
–1
–2
–3
V
A
= 30V
S
V
F
S
V
F
= –100
= –100 –25
–12
–15
–18
R = 10kΩ
= 100pF
R = 10kΩ
= 100pF
–30
–35
C
C
L
L
–20 –10
0
10 20 30 40 50 60 70 80
–5
0
5
10 15 20 25 30 35 40 45
–10
0
10 20 30 40 50 60 70 80 90
TIME (µs)
TIME (µs)
TIME (µs)
2057 G61
2057 G62
2057 G63
Output Overload Recovery
Output Overload Recovery
Output Overload Recovery
1
0
2
0
0.5
V
IN
V
0
V
IN
IN
–1
–2
–0.5
30
25
20
15
10
5
15
12
9
3
V
OUT
2
6
V
A
=
30V
1
V
A
=
15V
V
A
=
2.5V
S
V
F
S
V
F
S
V
F
V
OUT
V
OUT
= –100
= –100
= –100
3
R = 10kΩ
= 100pF
0
R = 10kΩ
= 100pF
R = 10kΩ
= 100pF
0
0
C
C
C
L
L
L
–3
–5
–1
–10
0
10 20 30 40 50 60 70 80 90 100
–20
0
20 40 60 80 100 120 140
–10
0
10 20 30 40 50 60 70 80
TIME (µs)
TIME (µs)
TIME (µs)
2057 G65
2057 G66
2057 G64
2057f
15
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
pin FuncTions
MS8 and S8/DD8
SD (Pin 1/Pin 1): Shutdown Control Pin.
–IN (Pin 2/Pin 2): Inverting Input.
+IN (Pin 3/Pin 3): Non-Inverting Input.
SDCOM (Pin 8/Pin 8): Reference Voltage for SD.
+
V (Pin 7/Pin 7): Positive Power Supply.
OUT (Pin 6/Pin 6): Amplifier Output
–
V (Pin 4/Pin 4, 9): Negative Power Supply.
NC (Pin 5/Pin 5): No Internal Connection.
MS10
GRD (Pin 1): Guard Ring. No Internal Connection.
–IN (Pin 2): Inverting Input.
SD (Pin 10): Shutdown Control Pin.
SDCOM (Pin 9): Reference Voltage for SD.
+
+IN (Pin 3): Non-Inverting Input.
GRD (Pin 4): Guard Ring. No Internal Connection.
V (Pin 8): Positive Power Supply.
NC (Pin 7): No Internal Connection.
OUT (Pin 6): Amplifier Output.
–
V (Pin 5): Negative Power Supply.
2057f
16
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
block DiagraMs
Amplifier
+
V
+
525Ω
525Ω
V
+
–IN
+IN
V
–
+
–
+
OUT
V
V
V
–
V
–
V
2057 BD1
–
Shutdown Circuit
+
V
+
V
0.5µA
10k
10k
SD
–
+
+
V
V
5.25V
SD
–
V
V
≈ 1.4V
TH
SDCOM
+
–
0.5µA
–
2057 BD2
–
V
2057f
17
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
applicaTions inForMaTion
Input Voltage Noise
0.25
0.20
0.15
0.01
0.05
0
A
V
= +11
V
S
=
2.5
ChopperstabilizedamplifiersliketheLTC2057achievelow
offset and 1/f noise by heterodyning DC and flicker noise
to higher frequencies. In a classical chopper stabilized
amplifier, thisprocessresultsinidletonesatthechopping
frequency and its odd harmonics.
NO 1/f NOISE
The LTC2057 utilizes circuitry to suppress these spurious
artifacts to well below the offset voltage. The typical ripple
magnitude at 100kHz is much less than 1µV
.
RMS
0.1
10
FREQUENCY (Hz)
1k
10k
1
100
The voltage noise spectrum of the LTC2057 is shown in
Figure 1. If lower noise is required, consider one of the
following circuits from the Typical Applications section:
"DC Stabilized, Ultralow Noise Amplifier" or "Paralleling
Choppers to Improve Noise."
2057 F02
Figure 2. Input Current Noise Spectrum
It is important to note that the current noise is not equal
to 2 I . This formula is relevant for base current in bipolar
q B
transistors and diode currents, but for most chopper and
auto-zero amplifiers with switched inputs, the dominant
current noise mechanism is not shot noise.
35
A
V
= +11
V
S
=
2.5V
30
25
20
15
10
5
Input Bias Current
As illustrated in Figure 3, the LTC2057’s input bias current
originates from two distinct mechanisms. Below 75°C,
input bias current is nearly constant with temperature,
and is caused by charge injection from the clocked input
switches used in offset correction.
NO 1/f NOISE
0
0.1
10
1k 10k 100k 1M
1
100
FREQUENCY (Hz)
100
1 TYPICAL UNIT
S
2057 F01
V
= 2.5V
Figure 1. Input Voltage Noise Spectrum
10
1
Input Current Noise
For applications with high source impedances, input cur-
rent noise can be a significant contributor to total output
noise. For this reason, it is important to consider noise
current interaction with circuit elements placed at an
amplifier’s inputs.
25°C MAX I SPEC
B
0.1
0.01
–25
0
25
100
125 150
–50
50 75
TEMPERATURE (°C)
The current noise spectrum of the LTC2057 is shown in
Figure 2. The characteristic curve shows no 1/f behavior.
As with all zero-drift amplifiers, there is a significant cur-
rentnoisecomponentattheoffset-nullingfrequency. This
phenomenonisdiscussedintheInputBiasCurrentsection.
2057 F03
Figure 3. Input Bias Current vs Temperature
2057f
18
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
applicaTions inForMaTion
The DC average of injection current is the specified input
bias current, but this current has a frequency component
at the chopping frequency as well. When these small
canbemitigatedbymatchingthesourceimpedancesseen
by the two inputs.
Thermocouple Effects
current pulses, typically about 0.7nA
, interact with
RMS
source impedances or gain setting resistors, the resulting
voltage spikes are amplified by the closed loop gain. For
high impedances, this may cause the 100kHz chopping
frequency to be visible in the output spectrum, which is
a phenomenon known as clock feed-through.
In order to achieve accuracy on the microvolt level, ther-
mocouple effects must be considered. Any connection
of dissimilar metals forms a thermoelectric junction and
generates a small temperature-dependent voltage. Also
known as the Seebeck Effect, these thermal EMFs can be
the dominant error source in low-drift circuits.
For zero-drift amplifiers, clock feed-through will be
proportional to source impedance and the magnitude of
Connectors, switches, relay contacts, sockets, resistors,
and solder are all candidates for significant thermal EMF
generation. Even junctions of copper wire from different
manufacturers can generate thermal EMFs of 200nV/°C,
which is over 13 times the maximum drift specification of
theLTC2057.Figures4and5illustratethepotentialmagni-
tude of these voltages and their sensitivity to temperature.
injection current, a measure of which is I at 25°C. In
B
order to minimize clock feed-through, keep gain-setting
resistors and source impedances as low as possible. If
high impedances are required, place a capacitor across
the feedback resistor to limit the bandwidth of the closed
loop gain. Doing so will effectively filter out the clock
feed-through signal.
In order to minimize thermocouple-induced errors, atten-
tion must be given to circuit board layout and component
selection. It is good practice to minimize the number of
junctionsintheamplifier’sinputsignalpathandavoidcon-
nectors, sockets, switches, andrelayswheneverpossible.
If such components are required, they should be selected
for low thermal EMF characteristics. Furthermore, the
number, type, and layout of junctions should be matched
for both inputs with respect to thermal gradients on the
circuitboard.Doingsomayinvolvedeliberatelyintroducing
dummy junctions to offset unavoidable junctions.
Injection currents from the two inputs are of equal magni-
tude but opposite direction. Therefore, input bias current
effects due to injection currents will not be canceled by
placing matched impedances at both inputs.
Above75°C,leakageoftheESDprotectiondiodesbeginsto
dominate the input bias current and continues to increase
exponentially at elevated temperatures. Unlike injection
current,leakagecurrentsareinthesamedirectionforboth
inputs. Therefore, the output error due to leakage currents
100
3.0
2.8
SLOPE ≈ 1.5µV/°C
BELOW 25°C
2.6
2.4
2.2
2.0
50
64% SN/36% Pb
1.8
1.6
1.4
1.2
60% Cd/40% SN
0
SLOPE ≈ 160nV/°C
BELOW 25°C
1.0
0.800
0.600
0.400
0.200
0
–50
–100
35
0
10
20
30
40
50
25
30
40
45
SOLDER-COPPER JUNCTION DIFFERENTIAL TEMPERATURE
TEMPERATURE (°C)
SOURCE: NEW ELECTRONICS 02-06-77
2057 F04
2057 F05
Figure 4. Thermal EMF Generated by Two Copper Wires
From Different Manufacturers
Figure 5. Solder-Copper Thermal EMFs
2057f
19
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
applicaTions inForMaTion
§
#
R
F
HEAT SOURCE/
POWER DISSIPATOR
RELAY
**
V
V
THERMAL
THERMAL
GRADIENT
R
R
+
G
–
§
LTC2057
R
L
–IN
+IN
†
THERMAL
G
**
V
+
–
IN
‡
MATCHING RELAY
NC
*
R
F
2057 F06
* CUT SLOTS IN PCB FOR THERMAL ISOLATION.
**INTRODUCE DUMMY JUNCTIONS AND COMPONENTS TO OFFSET UNAVOIDABLE JUNCTIONS OR CANCEL THERMAL EMFs.
†
‡
§
#
ALIGN INPUTS SYMMETRICALLY WITH RESPECT TO THERMAL GRADIENTS.
INTRODUCE DUMMY TRACES AND COMPONENTS FOR SYMMETRICAL THERMAL HEAT SINKING.
LOADS AND FEEDBACK CAN DISSIPATE POWER AND GENERATE THERMAL GRADIENTS. BE AWARE OF THEIR THERMAL EFFECTS.
COVER CIRCUIT TO PREVENT AIR CURRENTS FROM CREATING THERMAL GRADIENTS.
Figure 6. Techniques for Minimizing Thermocouple-Induced Errors
LEAKAGE
CURRENT
GRD
–IN
SD
LTC2057
MS10
R **
G
SDCOM
+
+
V
+IN
V
V
V
BIAS
*
GRD
NC
HIGH-Z
SENSOR
–
V
OUT
GUARD
RING
OUT
NO SOLDER MASK
OVER GUARD RING
–
V
R
F
*
**
NO LEAKAGE CURRENT. V = V
+IN
GRD
SENSOR
V
= I
• R ; R << Z
ERROR LEAK
G
G
R
F
+
V
R
G
–
V
BIAS
†
LTC2057
V
OUT
R
IN
+
IN
–
V
+
R´
ALTERNATIVE GUARD RING
–
F
V
GUARD RING
DRIVE CIRCUIT IF R MUST
G
ALTERNATIVE
GUARD RING
DRIVE
HIGH-Z SENSOR
BE HIGH IMPEDANCE.
RF R'
=
F ; R'G <<RG
†
R´
G
LEAKAGE CURRENT
RG R'G
2057 F07a
Figure 7a. Example Layout of Non-Inverting Amplifier with Leakage Guard Ring
2057f
20
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
applicaTions inForMaTion
Air currents can also lead to thermal gradients and cause
significant noise in measurement systems. It is important
to prevent airflow across sensitive circuits. Doing so will
often reduce thermocouple noise substantially.
Board leakage can be minimized by encircling the input
connections with a guard ring operated at a potential very
close to that of the inputs. The ring must be tied to a low
impedance node. For inverting configurations, the guard
ring should be tied to the potential of the positive input
(+IN). For non-inverting configurations, the guard ring
shouldbetiedtothepotentialofthenegativeinput(–IN).In
orderforthistechniquetobeeffective,theguardringmust
not be covered by solder mask. Ringing both sides of the
printedcircuitboardmayberequired.SeeFigures7aand7b
for examples of proper layout.
A summary of techniques can be found in Figure 6.
Leakage Effects
Leakage currents into high impedance signal nodes can
easily degrade measurement accuracy of sub-nanoamp
signals. High voltage and high temperature applications
are especially susceptible to these issues. Quality insula-
tion materials should be used, and insulating surfaces
should be cleaned to remove fluxes and other residues.
For humid environments, surface coating may be neces-
sary to provide a moisture barrier.
For low-leakage applications, the LTC2057 is available in
an MS10 package with a special pinout that facilitates the
layout of guard ring structures. The pins adjacent to the
inputs have no internal connection, allowing a guard ring
to be routed through them.
GUARD RING
§
R
F
HIGH-Z SENSOR
LTC2057
MS10
SD
GRD
–IN
V
SDCOM
BIAS
‡
+
+
LEAKAGE
CURRENT
V
V
V
+IN
NC
GRD
NO SOLDER
MASK OVER
GUARD RING
OUT
–
V
OUT
LOW IMPEDANCE
NODE ABSORBS
LEAKAGE CURRENT
–
V
‡
§
NO LEAKAGE CURRENT. V = V
–IN
GRD
AVOID DISSIPATING SIGNIFICANT AMOUNTS OF POWER IN THIS RESISTOR.
IT WILL GENERATE THERMAL GRADIENTS WITH RESPECT TO THE INPUT PINS
AND LEAD TO THERMOCOUPLE-INDUCED ERROR. THERMALLY ISOLATE OR
ALIGN WITH INPUTS IF RESISTOR WILL CAUSE HEATING.
R
F
GUARD RING
HIGH-Z SENSOR
V
BIAS
+
V
V
IN
R
IN
+
–
+
–
LEAKAGE
CURRENT
LTC2057
V
OUT
–
V
LEAKAGE CURRENT IS ABSORBED BY GROUND INSTEAD OF
CAUSING A MEASUREMENT ERROR.
2057 F07b
Figure 7b. Example Layout of Inverting Amplifier with Leakage Guard Ring
2057f
21
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
applicaTions inForMaTion
Power Dissipation
Shutdown Mode
Since the LTC2057/LTC2057HV is capable of operating at
>30V total supply, care should be taken with respect to
powerdissipationintheamplifier.Whendrivingheavyloads
The LTC2057/LTC2057HV features a shutdown mode for
low-power applications. In the OFF state, the amplifier
draws less than 11μA of supply current under all normal
operating conditions, and the output presents a high-
impedance to external circuitry.
at high voltages, use the θ of the package to estimate
JA
the resulting die-temperature rise and take measures to
ensure that the resulting junction temperature does not
exceedspecifiedlimits.PCBmetallizationandheatsinking
should also be considered when high power dissipation
is expected. Thermal information for all packages can be
found in the Pin Configuration section.
Shutdown control is accomplished through differential
signaling. This method allows for low voltage digital
control logic to operate independently of the amplifier’s
high voltage supply rails.
Shutdown operation is accomplished by tying SDCOM to
logic ground and SD to a 3V or 5V logic signal. A sum-
mary of control logic and operating ranges is shown in
Tables 1 and 2.
Electrical Overstress
Absolute Maximum Ratings should not be exceeded.
Avoid driving the input and output pins beyond the rails,
especially at supply voltages approaching 60V. If these
fault conditions cannot be prevented, a series resistor at
thepinofinterestshouldhelptolimittheinputcurrentand
reduce the possibility of device damage. This technique
is shown in Figure 8.
Table 1. Shutdown Control Logic
SHUTDOWN PIN CONDITION
SD = Float, SDCOM = Float
SD – SDCOM > 2V
AMPLIFIER STATE
ON
ON
SD – SDCOM < 0.8V
OFF
Keep the value of the current limiting resistance as low
as possible to avoid adding noise and error voltages from
interaction with input bias currents but high enough to
protect the device. Resistances up to 2k will not seriously
impact noise or precision.
Table 2. Operating Voltage Range for Shutdown Pins
MIN
MAX
SD – SDCOM
SDCOM
SD
–0.2V
5.2V
–
+
V
V –2V
–
+
V
V
If the shutdown feature is not required, SD and SDCOM
may be left floating. Internal circuitry will automatically
keep the amplifier in the ON state.
For operation in noisy environments, a capacitor between
SD and SDCOM is recommended to prevent noise from
changing the shutdown state.
+
V
I
OVERLOAD
–
R
IN
LTC2057
OUT
1k
V
+
IN
–
V
R
IN
LIMITS I
TO <10mA
OVERLOAD
FOR V < 10V OUTSIDE OF THE SUPPLY RAILS.
IN
2057 F08
When there is a danger of SD and SDCOM being pulled
beyond the supply rails, resistance in series with the shut-
down pins is recommended to limit the resulting current.
Figure 8. Using a Resistor to Limit Input Current
2057f
22
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
Typical applicaTions
DC Stabilized, Ultralow Noise Composite Amplifier
Input Voltage Noise Spectrum
of Composite Amplifier
20V
R
F
20
18
16
14
12
10
8
A
=
+ 1 = 101
V
R
G
+
LTC2057HV
–
47nF
20V
1MΩ
–20V
1k
6
20k
20V
OUT
4
V
+
IN
8
2
R
G
LT1037
V
0
20Ω
0.1
1
10
100
–
FREQUENCY (Hz)
2057 TA02b
R
F
–20V
2k
2057 TA02
COMPOSITE AMPLIFIER COMBINES THE EXCELLENT BROADBAND NOISE
PERFORMANCE OF THE LT1037 WITH THE ZERO-DRIFT PROPERTIES OF
THE LTC2057. THE RESULTING CIRCUIT HAS MICROVOLT ACCURACY,
SUPPRESSED 1/f NOISE, AND LOW BROADBAND NOISE.
Low-Side Current Sense Amplifier
Transfer Function
Low-Side Current Sense Amplifier
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
AMPLIFIER OUTPUT SATURATES
WITH DIODE SHORTED
28V
10Ω
1N4148
I
SENSE
+
–
OR EQUIVALENT
V
SENSE
V
LTC2057
OUT
+
R
SENSE
OPTIONAL
SHORT
–
1k
2057 TA03
10Ω
DIODE NOT SHORTED
DIODE SHORTED
IDEAL TRANSFER
FUNCTION
V
= 101 • R
• I
OUT
SENSE SENSE
0
10
15
30
5
20
25
V
(µV)
SENSE
2057 TA03b
2057f
23
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
Typical applicaTions
Paralleling Choppers to Improve Noise
+
R5
LTC2057
R2
–
R1
+
–
R5
LTC2057
R2
R2
R1
R4
R3
+1
•
+1
A
=
V
V
+
–
IN
LTC2057
R4
V
OUT
R1
+
–
R5
LTC2057
R2
R3
R1
+
–
R5
LTC2057
R2
2057 TA04
R1
200nV
√N
11nV/√Hz
√N
P-P
DC TO 10Hz NOISE =
, e
n
=
, i = √N • 170fA/√Hz, I < N • 200pA (MAX)
n B
WHERE N IS THE NUMBER OF PARALLELED INPUT AMPLIFIERS.
FOR N = 4, DC TO 10Hz NOISE = 100nV , e = 5.5nV/√Hz, i = 340fA/√Hz, I < 800pA (MAX).
P-P
n
n
B
R
SHOULD BE A FEW HUNDRED OHMS TO ISOLATE AMPLIFIER OUTPUTS WITHOUT
5
CONTRIBUTING SIGNIFICANTLY TO NOISE OR I -INDUCED ERROR.
B
R2
R1
+1 >> √N FOR OUTPUT AMPLIFIER NOISE TO BE INSIGNIFICANT.
2057f
24
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
Typical applicaTions
Wide Input Range Precision Gain-of-100 Instrumentation Amplifier
30V
+
–IN
LTC2057HV
–
1ꢀV
7
–30V
ꢀ
9
10
11.5k
M9
M3
M1
V
CC
232Ω
6
LT1991A
REO
V
ꢃUT
11.5k
ꢃUT
1
2
3
P1
P3
P9
V
EE
5
30V
ꢂ
–
–1ꢀV
LTC2057HV
2057 TA01a
+IN
+
INPUT CM RANGE = 2ꢀV ꢁITH ꢂV ꢃO ꢃUTPUT ꢄꢁING
CMRR = 130dB (TYP), INPUT ꢃOOꢄET VꢃLTAGE = 1µV (TYP)
–30V
Ultra-Precision, 135dB Dynamic Range Photodiode Amplifier
Output Noise Spectrum of Photodiode Amplifier
400
20k
RBW = 1kHz
360
320
280
240
200
160
120
80
V
= I • 20kΩ
OUT PD
30pF
52V
BW = 300kHz
I
PD
–
V
LTC2057HV
OUT
68pF
PD
+
–1V
40
2057 TA06
0
OUTPUT RANGE 9µV TO 50V, LIMIT BW TO 1kHz
TO KEEP OUTPUT NOISE BELOW 5µV
1k
10k
100k
P-P
FREQUENCY (Hz)
2057 TA06b
NOISE FLOOR IS ONLY SLIGHTLY ABOVE THE 20kΩ RESISTOR`S 18nV/√Hz.
CLOCK FEEDTHROUGH IS VISIBLE NEAR 100kHz WITH AMPLITUDE OF
10µV
OUTPUT REFERRED OR 0.5nA
INPUT REFERRED.
RMS
RMS
2057f
25
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
Typical applicaTions
Differential Thermocouple Amplifier
10nF
249k
1%
15V
1k
8
9
15V
M9
M3
M1
7
TYPE K
1%
V
+ (YELLOW)
–
+
CC
10
1k
1%
LTC2057
–15V
6
LT1991A
REF
OUT
V
= 10mV/°C
OUT
1
2
3
– (RED)
P1
P3
P9
V
CM
V
5
EE
4
22Ω
–15V
100k
COUPLE THERMALLY
THERMOCOUPLE TEMP OF
–200°C TO 1250°C
0.1µF
GIVES –2V TO 12.5V V
OUT
ASSUMING 40µV/°C TEMPCO.
CHECK ACTUAL TEMPCO TABLE.
LT1025
+
V
V
V
IN
O
–
2057 TA07
–
+
R
499k
V–
V
= V + 0.1V TO V – 1.5V (SMALL SIGNAL)
CM
CMRR = 122dB (0.02°C ERROR PER VOLT)
GND
2057f
26
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
Typical applicaTions
18-Bit DAC with 25V Output Swing
REF
5V
LT5400-1
10kΩ MATCHED
RESISTOR NETWORK
30V
+
–
LT1012
LTC2057HV
–
150pF
+
–30V
R
IN
R
COM
REF
R
OFS
R
FB
SPI WITH
READBACK
8pF
30V
4
I
I
–
OUT1
LTC2756
5V
LTC2057HV
+
V
OUT
18-BIT DAC WITH SPAN SELECT
OUT2
GND
V
DD
SET SPAN TO 10V
0.1µF
–30V
GND
2057 TA08
Time Domain Response
10
5
V
CS/LD
0
30
20
10
0
V
OUT
–10
–20
–30
2057 TA09
TIME (50µs/DIV)
2057f
27
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
package DescripTion
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
DD8 Package
8-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1698 Rev C)
0.70 ±0.05
3.5 ±0.05
2.10 ±0.05 (2 SIDES)
1.65 ±0.05
PACKAGE
OUTLINE
0.25 ± 0.05
0.50
BSC
2.38 ±0.05
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
R = 0.125
0.40 ± 0.10
TYP
5
8
3.00 ±0.10
(4 SIDES)
1.65 ± 0.10
(2 SIDES)
PIN 1
TOP MARK
(NOTE 6)
(DD8) DFN 0509 REV C
4
1
0.25 ± 0.05
0.75 ±0.05
0.200 REF
0.50 BSC
2.38 ±0.10
BOTTOM VIEW—EXPOSED PAD
0.00 – 0.05
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
2057f
28
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
package DescripTion
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
MS8 Package
8-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1660 Rev F)
0.889 0.127
(.035 .005)
5.23
3.20 – 3.45
(.206)
(.126 – .136)
MIN
3.00 0.102
(.118 .004)
(NOTE 3)
0.52
(.0205)
REF
0.65
(.0256)
BSC
0.42 0.038
(.0165 .0015)
TYP
8
7 6 5
RECOMMENDED SOLDER PAD LAYOUT
3.00 0.102
(.118 .004)
(NOTE 4)
4.90 0.152
(.193 .006)
DETAIL “A”
0.254
(.010)
0° – 6° TYP
GAUGE PLANE
1
2
3
4
0.53 0.152
(.021 .006)
1.10
(.043)
MAX
0.86
(.034)
REF
DETAIL “A”
0.18
(.007)
SEATING
PLANE
0.22 – 0.38
0.1016 0.0508
(.009 – .015)
(.004 .002)
0.65
(.0256)
BSC
TYP
MSOP (MS8) 0307 REV F
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
2057f
29
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
package DescripTion
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
MS Package
10-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1661 Rev E)
0.889 0.ꢀꢁ7
(.035 .005)
5.ꢁ3
3.ꢁ0 – 3.45
(.ꢁ0ꢂ)
(.ꢀꢁꢂ – .ꢀ3ꢂ)
MIN
3.00 0.ꢀ0ꢁ
(.ꢀꢀ8 .004)
(NOTE 3)
0.497 0.07ꢂ
(.0ꢀ9ꢂ .003)
REF
0.50
(.0ꢀ97)
BSC
0.305 0.038
(.0ꢀꢁ0 .00ꢀ5)
TYP
ꢀ0 9
8
7 ꢂ
RECOMMENDED SOLDER PAD LAYOUT
3.00 0.ꢀ0ꢁ
(.ꢀꢀ8 .004)
(NOTE 4)
4.90 0.ꢀ5ꢁ
(.ꢀ93 .00ꢂ)
DETAIL “A”
0.ꢁ54
(.0ꢀ0)
0° – ꢂ° TYP
GAUGE PLANE
ꢀ
ꢁ
3
4 5
0.53 0.ꢀ5ꢁ
(.0ꢁꢀ .00ꢂ)
0.8ꢂ
(.034)
REF
ꢀ.ꢀ0
(.043)
MAX
DETAIL “A”
0.ꢀ8
(.007)
SEATING
PLANE
0.ꢀ7 – 0.ꢁ7
(.007 – .0ꢀꢀ)
TYP
0.ꢀ0ꢀꢂ 0.0508
(.004 .00ꢁ)
0.50
(.0ꢀ97)
BSC
MSOP (MS) 0307 REV E
NOTE:
ꢀ. DIMENSIONS IN MILLIMETER/(INCH)
ꢁ. 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.ꢀ5ꢁmm (.00ꢂ") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.ꢀ5ꢁmm (.00ꢂ") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.ꢀ0ꢁmm (.004") MAX
2057f
30
For more information www.linear.com/LTC2057
LTC2057/LTC2057HV
package DescripTion
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610 Rev G)
.189 – .197
(4.801 – 5.004)
.045 ±.005
NOTE 3
.050 BSC
7
5
8
6
.245
MIN
.160 ±.005
.150 – .157
(3.810 – 3.988)
NOTE 3
.228 – .244
(5.791 – 6.197)
.030 ±.005
TYP
1
3
4
2
RECOMMENDED SOLDER PAD LAYOUT
.010 – .020
(0.254 – 0.508)
× 45°
.053 – .069
(1.346 – 1.752)
.004 – .010
(0.101 – 0.254)
.008 – .010
(0.203 – 0.254)
0°– 8° TYP
.016 – .050
(0.406 – 1.270)
.050
(1.270)
BSC
.014 – .019
(0.355 – 0.483)
TYP
NOTE:
INCHES
1. DIMENSIONS IN
(MILLIMETERS)
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)
4. PIN 1 CAN BE BEVEL EDGE OR A DIMPLE
SO8 REV G 0212
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.
2057f
31
LTC2057/LTC2057HV
Typical applicaTion
Microvolt Precision 18-Bit ADC Driver
≤ 5 ksps IS RECOMMENDED TO
MINIMIZE ERROR FROM ADC INPUT
CURRENT AND 150Ω RESISTOR.
2.5V
1.8V
A
= 50
V
BW = 1kHz
10µF
0.1µF
5V
50mV
0V
+
CHAIN
RDL/SDI
SDO
SCK
BUSY
V
OV
DD
DD
150Ω
+IN
–IN
LTC2057
LTC2368-18
REF GND
1µF
–
–5V
10Ω
1%
10k
CNV
2057 TA10
SAMPLE
100k
1%
10nF
205Ω
–5V
RESISTOR DIVIDER AT ADC INPUT ENSURES LIVE
ZERO OPERATION BY ACCOUNTING FOR 5µV
LTC6655-2.5
V
V
IN
5V
MAXIMUM V OF THE LTC2057 AND 11LSB
OUT_F
OS
ZERO-SCALE ERROR OF THE ADC. RESULTING
OFFSET IS CONSTANT AND CAN BE SUBTRACTED
FROM THE RESULT.
SHDN
V
OUT_S
GND
47µF
relaTeD parTs
PART NUMBER
DESCRIPTION
Zero-Drift Operational Amplifier
Dual/Quad, Zero-Drift Operational Amplifier
COMMENTS
LTC2050HV
3µV V , 2.7V to 12V V , 1.5mA I , RR Output
OS S S
LTC2051HV/
LTC2052HV
3µV V , 2.7V to 12V V , 1.5mA I , RR Output
OS S S
LTC2053
Precision, Rail-to-Rail, Zero-Drift, Resistor-Programmable
Instrumentation Amplifier
10µV V , 2.7V to 11V V , 1.3mA I , RRIO
OS S S
LTC2054HV/
LTC2055HV
Micropower, Single/Dual, Zero-Drift Operational Amplifier
5µV V , 2.7V to 12V V , 0.2mA I , RRIO
OS S S
LTC6652
LT6654
Precision, Low Drift, Low Noise, Buffered Reference
5ppm/°C, 0.05% Initial Accuracy, 2.1ppm Noise
P-P
Precision, Wide Supply, High Output Drive, Low Noise Reference
0.25ppm Noise, Low Drift, Precision, Buffered Reference Family
Dual/Quad, 76V Over-The-Top® Input Operational Amplifier
140V Operational Amplifier
10ppm/°C, 0.05% Initial Accuracy, 1.6ppm Noise
P-P
LTC6655
LT6016/LT6017
LTC6090
LT5400
2ppm/°C, 0.025% Initial Accuracy, 0.25ppm Noise
P-P
50µV V , 3V to 50V V , 0.335mA I , RRIO
OS
S
S
50pA I , 1.6mV V , 9.5V to 140V V , 4.5mA I , RR Output
B
OS
S
S
Quad Matched Resistor Network
0.01%, 0.2ppm/°C Matching
2057f
LT 0513 • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
32
●
●
LINEAR TECHNOLOGY CORPORATION 2013
(408)432-1900 FAX: (408) 434-0507 www.linear.com/LTC2057
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