ADG725/ADG731 are 16/32-channel, serially controlled 4 1.8 V to 5.5 V, -2.5 V, analog multiplexers
The ADG725 and ADG731 are monolithic CMOS analog multiplexers with a 3‑wire serial interface compatible with SPI, QSPI and MICROWIRE. The ADG731 provides a single 32‑to‑1 channel mux, while the ADG725 can be configured as a dual 16‑to‑1 or differential 16‑to‑1 mux. Both devices operate from 1.8 V to 5.5 V single‑supply or +2.5 V dual‑supply and feature low on‑resistance and fast switching.
Key features include 3‑wire serial control, rail‑to‑rail operation, break‑before‑make switching, and options for 48‑lead LFCSP or TQFP packages. The document provides detailed specifications, timing diagrams, pin configurations, ordering information and absolute maximum ratings.
| Supply Voltage (single‑supply) | 1.8 V to 5.5 V |
|---|---|
| Supply Voltage (dual‑supply) | +2.5 V dual‑supply operation |
| On‑Resistance (typical) | 4 Ω |
| On‑Resistance Flatness (typical) | 0.5 Ω |
| Switching Time (typical) | 42 ns |
| Bandwidth (ADG725) | 34 MHz typ |
| Bandwidth (ADG731) | 18 MHz typ |
| Package Options | 48‑lead LFCSP (7 mm × 7 mm) or 48‑lead TQFP |
The ADG725 operates from a single supply of 1.8 V to 5.5 V or from a dual‑supply of +2.5 V.
The ADG731 has a typical on‑resistance of 4 Ω.
Typical switching time is 42 ns.
Both devices are offered in a 48‑lead LFCSP (7 mm × 7 mm) and a 48‑lead TQFP package.