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.
Supply flexibility and temperature range
For designs that need to switch signals near the negative rail, the dual-supply option gives you a clean ±2.5 V window.