LTC2050HV_15 Datasheet, PDF (1/16 Pages) Linear Technology – Zero-Drift Operational Amplifiers in SOT-23

FEATURES
n _{Maximum Offset Voltage of 3μV}
n _{Maximum Offset Voltage Drift of 30nV/°C}
n _{Noise: 1.5μVP-P (0.01Hz to 10Hz Typ)}
n _{Voltage Gain: 140dB (Typ)}
n _{PSRR: 130dB (Typ)}
n _{CMRR: 130dB (Typ)}
n _{Supply Current: 0.8mA (Typ)}
n _{Supply Operation: 2.7V to 6V (LTC2050)}
2.7V to ±5.5V (LTC2050HV)
n _{Extended Common Mode Input Range}
n _{Output Swings Rail-to-Rail}
n _{Input Overload Recovery Time: 2ms (Typ)}
n _{Operating Temperature Range: – 40°C to 125°C}
n _{Low Profle (1mm) SOT-23 (ThinSOT)}^™ _Package
APPLICATIONS
n _{Thermocouple Amplifiers}
n _{Electronic Scales}
n _{Medical Instrumentation}
n _{Strain Gauge Amplifiers}
n _{High Resolution Data Acquisition}
n _{DC Accurate RC Active Filters}
n _{Low Side Current Sense}
LTC2050/LTC2050HV
Zero-Drift
Operational Amplifiers
in SOT-23
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 LTC2050, despite its miniature size, features uncom-
promising DC performance. The typical input offset voltage
and offset drift are 0.5μV and 10nV/°C. The almost zero
DC offset and drift are supported with a power supply
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 1.5μV_P-P DC to 10Hz noise and a 3MHz gain
bandwidth product.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other
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
–5V
A_V = 100
2050 TA01
Input Referred Noise 0.1Hz to 10Hz
2
1
0
–1
–2
0
2
4
6
8
10
TIME (SEC)
2050fc
1