LTC2050/LTC2050HV
Zero-Drift Operational Amplifiers in SOT-23
FEATURES
nn Maximum Offset Voltage of 3µV
nn Maximum Offset Voltage Drift of 30nV/°C
nn Noise: 1.5µVP-P (0.01Hz to 10Hz Typ)
nn Voltage Gain: 140dB (Typ)
nn PSRR: 130dB (Typ)
nn CMRR: 130dB (Typ)
nn Supply Current: 0.8mA (Typ)
nn Supply Operation
nn LTC2050: 2.7V to 6V
nn LTC2050HV: 2.7V to ±5.5V
nn LTC2050HVMP: 4.5V to ±5.5V
nn Extended Common Mode Input Range
nn Output Swings Rail-to-Rail
nn Input Overload Recovery Time: 2ms (Typ)
nn Operating Temperature Range
nn LTC2050: –40°C to 125°C
nn LTC2050HVMP: –55°C to 150°C
nn Low Profile (1mm) SOT-23 (ThinSOT™) Package
nn AEC-Q100 Qualified for Automotive Applications
APPLICATIONS
nn Thermocouple Amplifiers
nn Electronic Scales
nn Medical Instrumentation
nn Strain Gauge Amplifiers
nn High Resolution Data Acquisition
nn DC Accurate RC Active Filters
nn Low Side Current Sense
DESCRIPTION
The LTC®2050 and LTC2050HV are zero-drift operational
amplifiers available in the 5- or 6-lead SOT-23 and SO-8
packages. The LTC2050 operates from a single 2.7V to
6V supply. The LTC2050HV operates on supplies from
2.7V to ±5.5V. The current consumption is 800µA and
the versions in the 6-lead SOT-23 and SO-8 packages
offer power shutdown (active low). The LTC2050HVMP
offer operating range from 4.5V to ±5.5V and operating
temperature range of – 55°C to 150°C.
The LTC2050, despite its miniature size, features uncom-
promising DC performance. The typical input offset volt-
age and offset drift are 0.5µV and 10nV/°C. The almost
zero DC offset and drift are supported with a power sup-
ply rejection ratio (PSRR) and common mode rejection
ratio (CMRR) of more than 130dB.
The input common mode voltage ranges from the nega-
tive supply up to typically 1V from the positive supply.
The LTC2050 also has an enhanced output stage capable
of driving loads as low as 2kΩ to both supply rails. The
open-loop gain is typically 140dB. The LTC2050 also
features a 1.5µVP-P DC to 10Hz noise and a 3MHz gain
bandwidth product.
All registered trademarks and trademarks are the property of their respective owners. Protected
by U.S. patents, including 5481178.
TYPICAL APPLICATION
Differential Bridge Amplifier
5V
50Ω
GAIN
TRIM
0.1µF
5V
0.1µF
18.2k
350Ω
STRAIN
GAUGE
4– 5
LTC2050HV 1
3+
2
0.1µF 18.2k
AV = 100
–5V
2050 TA01a
Input Referred Noise 0.1Hz to 10Hz
2
1
0
–1
–2
0
2
4
6
8
10
TIME (SEC)
2050 TA01b
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Rev. F
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