0.5Ω/0.8Ω Low-Voltage, Dual SPDT Analog Switches in UCSP

The MAX4684/MAX4685 low on-resistance (RON), low-voltage, dual single-pole/double-throw (SPDT) analog switches operate from a single +1.8V to +5.5V supply. The MAX4684 features a 0.5Ω (max) RON for its NC switch and a 0.8Ω (max) RON for its NO switch at a +2.7V supply. The MAX4685 features a 0.8Ω max on-resistance for both NO and NC switches at a +2.7V supply.

Both parts feature break-before-make switching action (2ns) with tON = 50ns and tOFF = 40ns at +3V. The digital logic inputs are 1.8V logic-compatible with a +2.7V to +3.3V supply.

The MAX4684/MAX4685 are packaged in the chipscale package (UCSP™), significantly reducing the required PC board area. The chip occupies only a 2.0mm x 1.50mm area. The 4 x 3 array of solder bumps are spaced with a 0.5mm bump pitch.

Applications

* Audio/Video Signal Routing * Battery-Operated Equipment * Cell Phones * Communications Circuits * Modems * MP3 Players * PCMCIA Cards * Power Routing * Relay Replacement * Speaker-Headset Switching

* 12-Bump, 0.5mm-Pitch UCSP

* NC Switch RON

* 0.5Ω max (+2.7V Supply) (MAX4684)

* 0.8Ω max (+2.7V Supply) (MAX4685)

* NO Switch RON

* 0.8Ω max (+2.7V Supply)

* RON Match Between Channels

* 0.06Ω (max)

* RON Flatness Over Signal Range

* 0.15Ω (max)

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

* Rail-to-Rail Signal Handling

* 1.8V Logic Compatibility

* Low Crosstalk: -68dB (100kHz)

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

* THD: 0.03%

* 50nA (max) Supply Current

* Low Leakage Currents

* 1nA (max) at TA = +25°C