General Description

The MAX4644 is a single-pole/double-throw (SPDT) switch that operates from a single supply ranging from +1.8V to +5.5V. It provides low 4Ω on-resistance (RON) as well as 1Ω RON flatness over the entire analog-signal range. The MAX4644 offers fast switching times of less than 20ns while ensuring break-before-make operation. It typically consumes only 0.01μW of quiescent power, making it suitable for use in low-power, portable applications.

Features

♦ +1.8V to +5.5V Single-Supply Operation

♦ Rail-to-Rail Analog-Signal Range

♦ Guaranteed RON

4Ω max (+5V Supply)

8Ω max (+3V Supply)

♦ +1.8V Operation

RON 30Ω (typ) Over Temperature

tON 18ns (typ), tOFF 12ns typ

♦ Guaranteed RON Flatness: 0.75Ω (typ) (+5V Supply)

♦ Guaranteed RON Match Between Channels: 0.1Ω typ (+5V Supply)

♦ Low Leakage (< 0.35nA) Over Entire Temperature Range

♦ Excellent AC Characteristics

Low Crosstalk: -82dB at 1MHz

High Off-Isolation: -80dB at 1MHz

0.018% Total Harmonic Distortion

♦ Low Power Consumption: < 0.01µW

Applications

Battery-Operated Equipment

Audio and Video Signal Routing

Low-Voltage Data-Acquisition Systems

Sample-and-Hold Circuits

Communications Circuits