LTC2057 Datasheet, PDF (1/32 Pages) Linear Dimensions Semiconductor – High Voltage, Low Noise Zero-Drift Operational Amplifier

LTC2057/LTC2057HV
High Voltage, Low Noise
Zero-Drift Operational Amplifier
Features
n _{Supply Voltage Range}
n _{4.75V to 36V (LTC2057)}
ⁿ 4.75V to 60V (LTC2057HV)
n _{Offset Voltage: 4μV (Maximum)}
n _{Offset Voltage Drift: 0.015μV/°C}
(Maximum, –40°C to 125°C)
n _{Input Noise Voltage}
n _{200nVP-P, DC to 10Hz (Typ)}
ⁿ 11nV/√Hz, 1kHz (Typ)
n _{Input Common Mode Range: V}^– _{– 0.1V to V}⁺ _{– 1.5V}
n _{Rail-to-Rail Output}
n _{Unity Gain Stable}
n _{Gain Bandwidth Product: 1.5MHz (Typ)}
n _{Slew Rate: 0.45V/μs (Typ)}
n _{AVOL: 150dB (Typ)}
n _{PSRR: 160dB (Typ)}
n _{CMRR: 150dB (Typ)}
n _{Shutdown Mode}
Applications
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}
Description
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, 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.
Typical Application
Wide Input Range Precision Gain-of-100 Instrumentation Amplifier
30V
–IN
+
LTC2057HV
–
18V
–30V
11.5k
232Ω
11.5k
30V
8
9
10
M9
M3
M1
1 _P1
2 _P3
3 _P9
7
V_CC
LT1991A OUT
REF
V_{EE 5}
4
6
V_OUT
–
LTC2057HV
–18V
2057 TA01a
+IN
+
INPUT CM RANGE = ±28V WITH 4V OF OUTPUT SWING
CMRR = 130dB (TYP), INPUT OFFSET VOLTAGE = 1µV (TYP)
–30V
Input Offset Voltage
vs Supply Voltage
5
5 TYPICAL UNITS
4 V_CM = V_S/2
3 ^{TA = 25°C}
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
For more information www.linear.com/LTC2057
2057f
1