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LTC1100 - Precision, Zero-Drift Instrumentation Amplifier

The LTC1100 is a high precision instrumentation amplifier using zero-drift techniques to achieve outstanding DC performance. The input DC offset is typically 1µV while the DC offset drift is typically 5nV/°C; a very low bias current of 65pA is also achieved.

The LTC1100 is self-contained; that is, it achieves a differential gain of 100 without any external gain setting resistor or trim pot. The gain linearity is 20ppm and the gain drift is 4ppm/°C. The LTC1100 operates from a single 5V supply up to ±8V. The output typically swings 300mV from its power supply rails with a 10k load.

An optional external capacitor can be added from Pin 7 to Pin 8 to tailor the devices 18kHz bandwidth and to eliminate any unwanted noise pickup.

The LTC1100 is also offered in a 16-pin surface mount package with selectable gains of 10 or 100.

The LTC1100 is manufactured using Linear Technology?s enhanced LTCMOS?silicon gate process.

Features Offset Voltage: 10µV Max Offset Voltage Drift: 100nV/°C Max Bias Current: 65pA Max Offset Current: 65pA Max Gain Nonlinearity: 20ppm Max Gain Error: ±0.075% Max CMRR: 90dB 0.1Hz to 10Hz Noise: 1.9µVP-P Single 5V Supply Operation 8-Pin MiniDIP Typical Application

Applications Thermocouple Amplifiers Strain Gauge Amplifiers Differential to Single-Ended Converters Packaging