LTC2050 Zero Drift Operational Amplifier FEATURES

Electrical Specifications Subject to Change
LTC2050
Zero Drift
Operational Amplifier
August 1999
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FEATURES
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The LTC®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 applications. The power consumption is 800µA and the versions in the 6-lead SOT-23 and SO-8 packages offer power
shutdown.
The LTC2050, despite its miniature size, features uncompromising 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.
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APPLICATIONS
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Thermocouple Amplifiers
Electronic Scales
Medical Instrumentation
Strain Gauge Amplifiers
High Resolution Data Acquisition
DC Accurate RC Active Filters
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, LTC and LT are registered trademarks of Linear Technology Corporation.
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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 1kΩ to both supply rails. The open-loop
gain, loaded with 1kΩ, is in excess of 130dB. The LTC2050
also features a 1.5µVP-P DC to 10Hz noise and a 3MHz
gain-bandwidth product.
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ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V + to V –) ................................. 7V
Input Voltage ..............................(V + + 0.3V)(V – – 0.3V)
Output Short-Circuit Duration .......................... Indefinite
Operating Temperature Range ................ – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
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PACKAGE I FOR ATIO
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SOT-23 Package
Maximum Offset Voltage: 5µV
Maximum Offset Voltage Drift: 50nV/°C
Noise: 1.5µVP-P (0.1Hz to 10Hz Typ)
Voltage Gain: 130dB (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)
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DESCRIPTION
TOP VIEW
TOP VIEW
5 V+
OUT 1
V
4 –IN
+IN 3
6 V+
OUT 1
V– 2
–2
5 SHDN
+IN 3
S5 PACKAGE
5-LEAD PLASTIC SOT-23
4 –IN
S6 PACKAGE
6-LEAD PLASTIC SOT-23
TOP VIEW
SHDN 1
8
NC
–IN 2
7
V+
+IN 3
6
OUT
5
NC
V–
4
S8 PACKAGE
8-LEAD PLASTIC SO
Specifications on this data sheet are preliminary only, and subject to change
without notice. Contact the manufacturer before finalizing a design using this part.
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