GENERAL DESCRIPTION
The ADG1634L is a monolithic industrial CMOS (iCMOS®) analog
switch comprising four independently selectable single-pole, double-
throw (SPDT) switches, respectively.
All channels exhibit break-before-make switching action that prevents
momentary shorting when switching channels. An EN input
on the ADG1634L is used to enable or disable the device. When
disabled, all channels are switched off. The switch is enabled with a
Logic 1 EN input, while the INx input defines the state of the SPDT
switch (see Table 12).
The ultralow on resistance and on-resistance flatness of the switch
makes it an ideal solution for data acquisition and gain switching
applications, where low distortion is critical. iCMOS construction
ensures ultra low power dissipation, making the device ideally
suited for portable and battery-powered instruments.
An external VL supply provides flexibility for lower logic control. The
ADG1634L is both 1.2 V and 1.8 V JEDEC standard compliant.

FEATURES
► 4.7 Ω typical on resistance for ±5 V dual supply at 25°C
► 1.2 Ω on-resistance flatness for ±5 V dual supply at 25°C
► Fully specified at ±5 V, +12 V, +5 V, and +3.3 V
► ±3.3 V to ±8 V dual-supply operation
► 3.3 V to 16 V single-supply operation
► VL supply for low logic level compatibility
► 1.8 V JEDEC standard compliant
► 1.2 V JEDEC standard compliant
► Rail-to-rail operation
► 24-lead, 4 mm × 4 mm LFCSP

APPLICATIONS
► Communication systems
► Medical systems
► Audio signal routing
► Video signal routing
► Automatic test equipment
► Data acquisition systems
► Battery-powered systems
► FPGA and microcontroller systems
► Sample-and-hold systems
► Relay replacements

PRODUCT HIGHLIGHTS
1. 8.2 Ω maximum on resistance over temperature.
2. Minimum distortion.
3. VL supply for low logic level compatibility.
4. JEDEC standard compliant for both 1.2 V and 1.8 V logic levels.
5. Guaranteed switch off when digital inputs are floating.
6. 24-lead, 4 mm × 4 mm LFCSP.