What this 8:1 CMOS multiplexer does
The Maxim Integrated MAX4051AEEE+ is a single-ended 8:1 analog multiplexer/demultiplexer in a 16-pin QSOP package. It routes one of eight analog inputs to a common output (or the reverse as a demultiplexer) with a maximum on-resistance of 100 ohms and channel-to-channel matching held to 6 ohms max. The switch topology is break-before-make, so the output never sees two inputs shorted during transition. It runs on a single supply from 2 V to 16 V, or dual supplies from ±2.7 V to ±8 V. Key specs for analog signal integrity: -90 dB crosstalk at 100 kHz; 2 pC charge injection; off-leakage is 100 pA max.
