LTC2050/LTC2050HV
Zero-Drift
Operational Amplifiers
in SOT-23
FEATURES
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DESCRIPTIO
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SOT-23 Package
Maximum Offset Voltage of 3碌V
Maximum Offset Voltage Drift of 30nV/擄C
Noise: 1.5碌V
P-P
(0.01Hz to 10Hz Typ)
Voltage Gain: 140dB (Typ)
PSRR: 130dB (Typ)
CMRR: 130dB (Typ)
Supply Current: 0.8mA (Typ)
Supply Operation: 2.7V to 6V (LTC2050)
2.7V to
鹵5.5V
(LTC2050HV)
Extended Common Mode Input Range
Output Swings Rail-to-Rail
Input Overload Recovery Time: 2ms (Typ)
The LTC
廬
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
鹵5.5V.
The current consumption is 800碌A(chǔ) 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 volt-
age and offset drift are 0.5碌V and 10nV/擄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 negative
supply up to typically 1V from the positive supply. The
LTC2050 also has an enhanced output stage capable of
driving loads as low as 2k鈩?to both supply rails. The open-
loop gain is typically 140dB. The LTC2050 also features a
1.5碌V
P-P
DC to 10Hz noise and a 3MHz gain bandwidth
product.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
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Thermocouple Amplifiers
Electronic Scales
Medical Instrumentation
Strain Gauge Amplifiers
High Resolution Data Acquisition
DC Accurate RC Active Filters
Low Side Current Sense
TYPICAL APPLICATION
Differential Bridge Amplifier
2
5V
50鈩?/div>
GAIN
TRIM
5V
0.1碌F
Input Referred Noise 0.1Hz to 10Hz
0.1碌F
1
18.2k
碌V
350鈩?/div>
STRAIN
GAUGE
0
4
鈥?/div>
+
5
1
A
V
= 100
LTC2050
3
2
鈥?
0.1碌F
18.2k
鈥?
2050 TA01
0
鈥?5V
U
2
4
6
TIME (SEC)
8
10
U
U
1
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