FeaTures
n
n
n
n
n
n
n
n
n
n
n
n
n
Supply Voltage Range
n
4.75V to 36V (LTC2057)
n
4.75V to 60V (LTC2057HV)
Offset Voltage: 4μV (Maximum)
Offset Voltage Drift: 0.015μV/°C
(Maximum, –40°C to 125°C)
Input Noise Voltage
n
200nV
P-P
, DC to 10Hz (Typ)
n
11nV/√Hz, 1kHz (Typ)
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)
A
VOL
: 150dB (Typ)
PSRR: 160dB (Typ)
CMRR: 150dB (Typ)
Shutdown Mode
High Resolution Data Acquisition
Reference Buffering
Test and Measurement
Electronic Scales
Thermocouple Amplifiers
Strain Gauges
Low-Side Current Sense
Automotive Monitors and Control
LTC2057/LTC2057HV
High Voltage, Low Noise
Zero-Drift Operational Amplifier
DescripTion
The
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, allowing this amplifier to achieve a maximum
offset voltage of 4μV and a DC to 10Hz input noise volt-
age of 200nV
P-P
(typ). The LTC2057’s self-calibrating
circuitry results in low offset voltage drift with temperature,
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).
The LTC2057 provides rail-to-rail output swing and an
input common mode range that includes the V
–
rail (V
–
–
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.
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.
applicaTions
n
n
n
n
n
n
n
n
Typical applicaTion
Wide Input Range Precision Gain-of-100 Instrumentation Amplifier
30V
–IN
Input Offset Voltage
vs Supply Voltage
5
5 TYPICAL UNITS
4 V
CM
= V
S
/2
T = 25°C
3 A
+
LTC2057HV
–
–30V
232Ω
11.5k
11.5k
30V
8
M9
9
M3
10
M1
1
P1
2
P3
3
P9
18V
V
OS
(µV)
V
OUT
2057 TA01a
2
1
0
–1
–2
–3
–4
–5
0 5 10 15 20 25 30 35 40 45 50 55 60 65
V
S
(V)
2057 TA01b
7
V
CC
LT1991A
V
EE
4
–18V
REF
5
OUT
6
–
LTC2057HV
+IN
+
–30V
INPUT CM RANGE = ±28V WITH 4V OF OUTPUT SWING
CMRR = 130dB (TYP), INPUT OFFSET VOLTAGE = 1µV (TYP)
For more information
1
2057f
LINEAR_DIMENSIONS [ LINEAR DIMENSIONS SEMICONDUCTOR ]
