The ADG725/ADG731 series is a family of 16/32-channel, serially controlled, 4-line SPI compatible analog multiplexers from Analog Devices. It supports 1.8 V to 5.5 V single supply and -2.5 V dual supply, with 4-ohm switch resistance, 0.5-ohm switch resistance flatness, 7 mm x 7 mm 48-lead chip scale package (LFCSP) or 48-lead TQFP package, power-on reset, 42 ns switching time, single 32 to 1 channel multiplexer, dual/differential 16 to 1 channel multiplexer, TTL/CMOS compatible inputs and other features.
The ADG725 and ADG731 are CMOS analog multiplexers offering 32‑to‑1 (single) or dual 16‑to‑1 (differential) channel configurations. They feature a 3‑wire SPI‑compatible serial interface, low on‑resistance, rail‑to‑rail operation and fast switching suitable for a wide range of applications such as data acquisition, audio/video switching and medical instrumentation.
The devices are available in 48‑lead LFCSP or TQFP packages, support single‑supply operation from 1.8 V to 5.5 V or dual‑supply (+2.5 V) operation, and include detailed pin configurations, timing diagrams and absolute maximum ratings for reliable integration into system designs.
| On‑Resistance (Ron) typical | 4 Ω |
|---|---|
| On‑Resistance Flatness typical | 0.5 Ω |
| Switching time | 42 ns |
| Single‑supply voltage range | 1.8 V to 5.5 V |
| Dual‑supply operation | +2.5 V |
| Bandwidth (‑3 dB) | 34 MHz (ADG725) |
| Input high voltage (min) | 2.4 V |
| Input low voltage (max) | 0.8 V |
The ADG725 has a typical on‑resistance of 4 Ω.
It operates from a single supply of 1.8 V to 5.5 V or from a dual supply of +2.5 V.
The device switches in about 42 ns.