High-Speed, Low-Voltage, 4Ω, Dual, SPDT CMOS Analog Switch

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.

The MAX4644's features include low leakage currents over the entire temperature range, TTL/CMOS-compatible digital logic, and excellent AC characteristics. It is packaged in either a small 8-pin µMAX® or a tiny 6-pin SOT23.

Applications

* Audio/Video Signal Routing * Battery-Powered Applications * Communication Systems * Low-Voltage Data Acquisition * Sample-and-Hold Circuits

* +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