Low noise instrumentation amplifier provides excellent DC precision

13-11-2019 | Analog Devices | Power

Analog Devices LT6370 Low Noise Instrumentation Amplifier is a gain programmable, high precision instrumentation amplifier that provides industry-leading DC precision. This high precision allows smaller signals to be sensed and eases calibration requirements, particularly over temperature. The device employs a proprietary high-performance bipolar process that allows industry-leading accuracy coupled with exceptional long-term stability. The device is laser trimmed for very low input offset voltage (25µV) and high CMRR (94dB, G = 1). Proprietary on-chip test capability provides the input offset voltage drift (0.3µV/C) and gain drift (30ppm/C) to be guaranteed with automated testing on the S8E package.

Further to excellent DC specifications, the device’s broad bandwidth (3.1MHz, G = 1) and fast settling time enable it to work well in multiplexed applications. EMI filtering is integrated on the device’s inputs to maintain accuracy in the presence of harsh RF interference. The device is offered in a compact eight-pin MSOP or S8E package, which employs the conventional instrumentation amplifier pinout as well as a 10-pin 3mm x 3mm DFN. The S8E package is also provided as an A grade, which has superior DC specifications. The device is fully specified over the –40C to 85C and –40C to 125C temperature ranges.

Typical application fields include bridge amplifier, data acquisition, multiplexed signals, thermocouple amplifier, strain gauge amplifier, medical instrumentation, transducer interfaces, and differential to single-ended conversion.

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