Dual 8:1 mux with 4.5 Ohm on-resistance — signal routing for precision analog
The Analog Devices ADG707BRUZ is a dual 8:1 analog multiplexer/demultiplexer in a 28-TSSOP package. Each of the two multiplexers routes one of eight inputs to a common output, giving you sixteen analog channels in a single 28-pin footprint. The 4.5 Ohm max on-resistance keeps signal attenuation low — at 10 kOhm load the voltage division is under 0.05%, so you can drive an ADC input directly without a buffer. Crosstalk between channels is rated at -80 dB at 1 MHz, which means a 1 Vpp signal on one channel bleeds less than 100 µV into an adjacent channel — clean enough for 12-bit multiplexed systems and many 16-bit applications if layout is careful. The -3 dB bandwidth of 36 MHz supports video and high-speed data acquisition without significant roll-off below a few MHz. Charge injection is 8 pC, typical for a CMOS mux of this size — you'll see a small glitch on the output when switching channels, but it settles within the 32 ns turn-on time. The 100 pA max off-leakage means you can multiplex high-impedance sensor outputs (like pH probes or photodiodes) without worrying about bias current errors.
For designs that need to switch signals near the negative rail, the dual-supply option gives you a clean ±2.5 V window.