Automotive-grade 8:1 analog switch with sub-ohm on-resistance
The NXP NX3L4051PW-Q100J is a single-pole 8-throw (8:1) analog multiplexer/demultiplexer designed for signal routing in automotive and industrial systems. Its key draw is a maximum on-resistance of 750mOhm, which keeps insertion loss low and signal integrity high in analog paths like sensor conditioning, audio switching, or multiplexed ADC inputs. The 16-TSSOP package is surface-mount friendly and the 15MHz -3dB bandwidth covers audio, sensor, and low-speed data signals. Crosstalk of -90dB at 100kHz keeps channel bleed-through in check for precision analog work.
Package and mounting
A 750mOhm max Ron keeps insertion loss low. Channel-to-channel matching of 70mOhm means the gain error across channels is tight. Charge injection is rated at 15pC, which translates to a small voltage glitch on the analog bus when the switch toggles. For high-impedance sample-and-hold circuits this matters; for general-purpose signal routing it is rarely a problem. Off-leakage current is max 10nA, so the mux does not load down the signal source when the channel is deselected. The 35pF off-capacitance per channel is typical for this class of switch.
Switching speed and bandwidth
Maximum turn-on time is 45ns, turn-off is 25ns. That is fast enough for audio muting, sensor multiplexing at moderate rates, or switching between reference voltages. The 15MHz -3dB bandwidth covers the full audio range and most sensor bandwidths with flat response.
Lifecycle and sourcing
The NX3L4051PW-Q100J is listed as Active in production with ROHS3 compliance.