Low on-resistance DPDT for precision signal routing
The ADG888YCPZ-REEL7 is a dual DPDT (2:2 multiplexer/demultiplexer) switch from Analog Devices, built for low-loss signal routing in precision analog and RF paths. Each of the two independent switch circuits connects one common pin to two throws, giving you a flexible crosspoint for differential or dual-channel switching.
On-resistance is 480 mOhm max — low enough that a 10 mA signal sees under 5 mV of drop, preserving accuracy in sensor and ADC front-ends. Channel-to-channel matching of 40 mOhm keeps the gain error between differential legs tight, so a balanced audio or data pair stays matched. Switching speed is 30 ns on, 17 ns off — fast enough to route 29 MHz bandwidth signals without distorting the edge. The -3 dB bandwidth of 29 MHz means the switch passes a 10 MHz clock with less than 1 dB of attenuation, suitable for video or high-speed data lines. Crosstalk is -99 dB at 100 kHz — that is 99 dB below the signal level, so adjacent channels barely couple. In a mixed-signal board where a clean analog path runs next to a digital control line, this isolation keeps the noise floor low. Charge injection is 70 pC — when the switch opens, that charge dumps into the load. For a 10 pF sampling capacitor, that is a 7 mV glitch; budget this into your settling time if the switch feeds a sample-and-hold. The -40°C to 125°C operating range covers industrial and automotive ambient, though it is not formally AEC-Q qualified.
The 0.5 mm pitch is hand-solderable with a fine tip and flux, but a hot-air rework station makes the job cleaner. For prototyping, the Cut Tape option lets you buy a handful without committing to a full reel.
Active production and compliance
It is RoHS3 compliant (lead-free), so it ships into EU and RoHS-restricted markets without exemption paperwork.