Quad SPST switch with 4Ω flatness
The MAX4652EGP is a low-voltage, quad SPST analog switch from Analog Devices, each channel a simple 1:1 multiplexer/demultiplexer that is normally open (SPST - Open). Its headline 4 Ohm max on-resistance stays tightly matched across channels — channel-to-channel matching is 50 mOhm — so a precision gain-setting or data-acquisition front-end sees minimal offset between paths. Switching is fast: 14 ns turn-on and 8 ns turn-off, which keeps up with multiplexed ADC inputs or audio routing without introducing timing skew between channels.
Signal integrity at 1 MHz
Crosstalk is rated at -100 dB at 1 MHz — well into the noise floor for a 16-bit signal chain. If you are switching low-level analog signals near a digital bus, that isolation keeps the digital hash off the analog path. Charge injection is 2 pC typical, so the glitch when switching a sample-and-hold capacitor is small enough that many designs skip the external compensation cap. Off-leakage current maxes at 100 pA, and each channel presents 16 pF of capacitance to the source or load — both figures matter when the source impedance is high and settling time is tight.