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App note: MUX-friendly precision operational amplifiers

Posted on Sunday, March 3rd, 2019 in app notes by DP

an_ti_sbot040a

Another App note from Texas Instruments on op-amp input safety from breakdown voltages during source switch-over. Link here (PDF)

Multiplexing is a frequently used technique to perform data acquisition in multichannel systems with minimal signal-chain requirements. In this context, the role of the multiplexer (MUX) in an acquisition system is to switch between channels, and send each signal as quickly as possible to a single data converter, thus maximizing system throughput and minimizing delay. To provide accurate processing, a precision amplifier is placed downstream from the multiplexer to precisely drive the analog-to-digital converter (ADC).

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