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LTC1250 - Very Low Noise Zero-Drift Bridge Amplifier

The LTC1250 incorporates an improved output stage capable of driving 4.3V into a 1k load with a single 5V supply; it will swing ±4.9V into 5k with ±5V supplies. The input common mode range includes ground with single power supply voltages above 12V. Supply current is 3mA with a ±5V supply, and overload recovery times from positive and negative saturation are 0.5ms and 1.5ms, respectively. The internal nulling clock is set at 5kHz for optimum low frequency noise and offset drift; no external connections are necessary.

The LTC1250 is available in a standard 8-pin plastic DIP and 8-pin SO packages.

Protected by U.S. Patents including 4933642.

Features Very Low Noise: 0.75µVP-P Typ, 0.1Hz to 10Hz DC to 1Hz Noise Lower Than OP-07 Full Output Swing into 1k Load Offset Voltage: 10µV Max Offset Voltage Drift: 50nV/°C Max Common Mode Rejection Ratio: 110dB Min Power Supply Rejection Ratio: 115dB Min No External Components Required Pin Compatible with Standard 8-Pin Op Amps Available in Standard 8-Pin Plastic DIP and 8-Pin SO Packages Typical Application

Applications Electronic Scales Strain Gauge Amplifiers Thermocouple Amplifiers High Resolution Data Acquisition Low Noise Transducers Instrumentation Amplifiers Packaging

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