Final Electrical Specifications
LTC2050
Zero-Drift
Operational Amplifier
in SOT-23
November 1999
FEATURES
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DESCRIPTIO
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
(0.1Hz to 10Hz Typ)
Voltage Gain: 140dB (Typ)
PSRR: 130dB (Typ)
CMRR: 130dB (Typ)
Supply Current: 0.8mA (Typ)
Single Supply Operation: 2.7V to 6V
Extended Common Mode Input Range
Output Swings Rail-to-Rail
Overload Recovery Time: 2ms (Typ)
The LTC
廬
2050 is a low drift operational amplifier available
in the 5- or 6-lead SOT-23 and SO-8 packages. It operates
from a single 2.7V supply while still supporting 5V appli-
cations. The power consumption is 800碌A(chǔ) and the ver-
sions 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 1V from the positive supply. The LTC2050
also has an enhanced output stage capable of driving
loads as low as 1k鈩?to both supply rails. The open-loop
gain, loaded with 1k鈩? is in excess of 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.
APPLICATI
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Thermocouple Amplifiers
Electronic Scales
Medical Instrumentation
Strain Gauge Amplifiers
High Resolution Data Acquisition
DC Accurate RC Active Filters
TYPICAL APPLICATI
5V
50鈩?/div>
GAIN
TRIM
Differential Bridge Amplifier
5V
3
0.1碌F
1000pF
Input Referred Noise 0.1Hz to 10Hz
V
S
= 5V
18.2k
1
碌V
350鈩?/div>
STRAIN
GAUGE
0
鈥?
2
鈥?/div>
+
7
6
A
V
= 100
鈥?
0
2050 TA01
LTC2050
3
4
1000pF
18.2k
2
6
4
TIME (s)
8
10
LT2050 TA02
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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