The ADG859 is a monolithic, CMOS SPDT switch that operates with a supply range of 1.8 V to 5.5 V. It is designed to offer low on resistance of 2.3 Ω maximum over the entire temperature range.
The ADG859 is a monolithic CMOS single‑pole double‑throw (SPDT) switch offered in a tiny 6‑lead SOT‑66 package (1.65 mm × 1.65 mm). It operates from 1.8 V to 5.5 V, offers low on‑resistance, high current capability, and rail‑to‑rail operation, making it suitable for space‑constrained handheld devices.
The document includes functional block diagrams, detailed specifications, absolute maximum ratings, pin descriptions, typical performance curves, and notes on ESD handling. It also lists typical applications such as cellular phones, PDAs, MP3 players, and other battery‑powered systems.
| Supply voltage range | 1.8 V to 5.5 V |
|---|---|
| Maximum continuous current | 300 mA (5 V operation) |
| Peak current | 500 mA at 5 V |
| Package | 6‑lead SOT‑66, 1.65 mm × 1.65 mm |
| Operating temperature range | -40 °C to +125 °C |
| Off‑state leakage current | 0.02 nA typ |
The ADG859 operates from 1.8 V to 5.5 V.
It can carry up to 300 mA continuous current at a 5 V supply.
The device is offered in a 6‑lead SOT‑66 package measuring 1.65 mm × 1.65 mm.