OPA2189: MUX-Friendly Function

Francis Jiang

Part Number: OPA2189

Tool/software:

Hi Team,

What's the MUX-Friendly function meaning? Could you please help me further understand the benefits of this function? Thanks in advance.

BRs,

Francis

6 months ago

+1 Clemens Ladisch 6 months ago

Guru 288030 points

This is explained in MUX-Friendly, Precision Operational Amplifiers.

0 Marek Lis 6 months ago

TI__Guru 64620 points

Most bipolar input transistor and high voltage CMOS op amps require back-to-back input protection diodes to prevent damage when the input terminals are pulled far apart. This fact, however, may cause a long-setting time when one of the diode gets turned-on disturbing input signal. Thus, the need for MUX-friendly input stage that eliminates the need for these input protection diodes - see below.

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OPA2189: MUX-Friendly Function