ADG904/ADG904-R is a wideband switch chip produced by Analog Devices. It has a high off isolation of 37 dB @ 1 GHz and a low insertion loss of 1.1 dB dc to 1 GHz. The chip works at a voltage of 1.65 V to 2.75 V, and uses CMOS/LVTTL control logic. It is available in 20-lead TSSOP and 4 mm × 4 mm LFCSP packages.
The ADG904 and ADG904‑R are CMOS 4:1 multiplexers that operate from 1.65 V to 2.75 V. They provide up to 37 dB off‑isolation at 1 GHz and a typical insertion loss of 1.1 dB at the same frequency. The devices are offered in 20‑lead TSSOP and 4 mm × 4 mm LFCSP packages and consume less than 1 µA of quiescent current.
The datasheet includes electrical specifications, absolute maximum ratings, pin configurations, timing diagrams, and typical performance curves. It also lists recommended applications such as wireless communications, antenna diversity, and high‑speed filter selection.
| Supply Voltage (Vop) | 1.65 V to 2.75 V |
|---|---|
| Off Isolation (1 GHz) | 37 dB |
| Insertion Loss (1 GHz) | 1.1 dB |
| On Switching Time | 8.5 ns to 10 ns |
| Off Switching Time | 13 ns to 16 ns |
| Operating Temperature Range (Industrial) | -40 °C to +85 °C |
| Package Types | 20‑lead TSSOP, 4 mm × 4 mm LFCSP |
The device operates from a single supply of 1.65 V to 2.75 V.
It provides 37 dB of off‑isolation at 1 GHz.
The typical insertion loss is 1.1 dB at 1 GHz.
The ADG904 is offered in a 20‑lead TSSOP package and a 4 mm × 4 mm LFCSP package.