8:1 analog multiplexer for precision signal routing
The MAX4617CSE+ is a single 8:1 CMOS analog multiplexer from Analog Devices, designed for routing analog or digital signals in precision data-acquisition and instrumentation systems. It switches one of eight inputs to a common output with a maximum on-resistance of 10 Ohm, and channel-to-channel matching of 200 mOhm ensures consistent attenuation across paths.
What the key specs mean for your BOM
A 15 ns turn-on and 10 ns turn-off time (max) means the mux can handle fast analog sampling rates without introducing timing skew — suitable for multiplexing signals ahead of a SAR ADC with a 1 MSPS throughput. Charge injection of 3 pC and leakage current of 1 nA max keep the DC offset and droop negligible in sample-and-hold front-ends; the -96 dB crosstalk at 100 kHz preserves channel isolation in multi-sensor arrays.
Package and board integration
The 5 pF source-off and 27 pF drain-off capacitances are low enough to avoid loading the signal source at moderate frequencies — the 10 Ohm Ron dominates the RC time constant in most applications.