General Description

The AS1746 is a low on-resistance (RON), low-voltage, dual-single-pole/double-throw (SPDT) analog switch designed to operate from a single +1.8 to +5.5V supply. The device features a 0.5Ω (max) RON for normally closed (NC) switches and a 0.6Ω (max) RON for normally open (NO) switches using a +2.7V supply. The AS1746 features break-before-make switching (2ns) with tON = 50ns and tOFF = 30ns (using a +2.7V supply).

The digital logic inputs are 1.8V logic-compatible with +2.7 to +3.3V supplies.

Key Features

Single Supply Operation: +1.8V to +5.5V

Normally Closed Switch RON: 0.45Ω (+2.7V Supply)

Normally Open Switch RON: 0.55Ω (+2.7V Supply)

RON Matching Between Channels: 0.06Ω

RON Flatness Over Signal Range: 0.15Ω

Supply Current: 50nA

Rail-to-Rail Signal Handling

1.8V Logic Compatibility

Low Crosstalk: -60dB (100kHz)

High Off-Isolation: -64dB (100kHz)

Total Harmonic Distortion: 0.025

Ultra-Low Leakage Currents: 1nA (@ TAMB = +25ºC)

Package Types:

- TDFN-10 (3x3mm)

- WL-CSP-10

Applications

The device is ideal for audio headsets, MP3 players, power routing switches, relay replacements, audio and video signal routing, communications circuits, PCMCIA cards, mobile phones, MODEMs, and any battery-operated equipment.