Four SPST-NO channels, 70 Ohm on-resistance
The MAX4620ESD+ is a quad SPST-NO analog switch from Analog Devices, packing four independent normally-open channels into a 14-SOIC package. Each channel presents a maximum 70 Ohm on-resistance with channel-to-channel matching held to 500 mOhm — tight enough that gain errors across a multiplexed signal chain stay within a few milliohms of each other. Switching is fast: 15 ns turn-on, 10 ns turn-off max. Charge injection is a low 3 pC, so the glitch dumped into the signal path when the switch opens or closes is small — important for sample-and-hold or precision DAC output stages where a pC-level spike lands right in the acquisition window.
-96 dB crosstalk at 100 kHz — signal isolation matters
Crosstalk is specified at -96 dB at 100 kHz. That means a 1 Vpp signal on an adjacent channel leaks less than 16 µV into the active channel at that frequency — clean enough for 16-bit audio paths or low-level sensor multiplexing where channel bleed would look like a false reading. Off-isolation leakage is max 1 nA, and the off-channel capacitance sits at 5 pF (source) and 8.5 pF (drain). Together they set the AC feedthrough floor: at 100 kHz, the 1 nA leakage dominates the DC error; the capacitive coupling determines the high-frequency bleed. For a 10 kOhm source impedance, the -3 dB bandwidth into a load stays well above 1 MHz.
The analog signal range swings rail-to-rail on the SPST channels, limited only by the supply headroom. Surface-mount 14-SOIC (3.90 mm width) — the narrow-body SOIC footprint is standard across thousands of boards. The Tube packaging means it ships in a stiff anti-static tube, not tape-and-reel, which is fine for bench builds and rework but worth noting if your pick-and-place feeder expects a reel. No moisture sensitivity label on the tube; the part is standard MSL 1 out of the tube.
Active production, ROHS3 compliant
Sourced to order through independent and authorized distribution.