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MAX4643：High-Speed, Low-Voltage, 4 Ohm, Dual SPST CMOS Analog Switches

The MAX4641/MAX4642/MAX4643 are monolithic, dual, single-pole/single-throw (SPST) switches that can operate from a single supply ranging from +1.8V to +5.5V. The MAX4641/MAX4642/MAX4643 provide low 4Ω on-resistance (RON), 0.6Ω RON matching between channels, and 1Ω RON flatness over the entire analog signal range. These devices offer fast switching times of less than 20ns while consuming less than 0.01µW of quiescent power. The MAX4641 has two normally open (NO) switches, and the MAX4642 has two normally closed (NC) switches. The MAX4643 has one NO switch and one NC switch. All three devices have low 0.35nA leakage currents over the entire temperature range. The MAX4641/MAX4642/MAX4643 are available in small 8-pin µMAX® and 8-pin QFN packages.

Key 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: 1Ω (+5V supply) Guaranteed RON Match Between Channels 0.6Ω (+5V supply) Low Leakage (<0.35nA) Over Entire Temperature Range Excellent AC Characteristics Low Crosstalk: -97dB at 1MHz High Off-Isolation: -80dB at 1MHz 0.018% Total Harmonic Distortion Low Power Consumption: < 0.01µW

MAX4641, MAX4642, MAX4643: Pin Configuration Applications/Uses Audio/Video Signal Routing Battery-Powered Applications Communication Systems Low-Voltage Data Acquisition Sample-and-Hold Circuits

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