Low Capacitance, Low Charge Injection, ±15 V/12 V iCMOS, Dual SPDT Switch
The ADG1236 is a monolithic CMOS device containing two independently selectable SPDT switches. It is designed on an iCMOS® process. iCMOS (industrial CMOS) is a modular manufacturing process combining high voltage complementary metal-oxide semiconductor (CMOS) and bipolar technologies. It enables the development of a wide range of high performance analog ICs capable of 33 V operation in a footprint that no previous generation of high voltage devices has been able to achieve. Unlike analog ICs using conventional CMOS processes, iCMOS components can tolerate high supply voltages while providing increased performance, dramatically lower power consumption, and reduced package size.
The ultralow capacitance and charge injection of the device make it an ideal solution for data acquisition and sample-and-hold applications, where low glitch and fast settling are required. Fast switching speed coupled with high signal bandwidth makes the device suitable for video signal switching. iCMOS construction ensures ultralow power dissipation, making the device ideally suited for portable and battery-powered instruments.
Each switch conducts equally well in both directions when on and has an input signal range that extends to the supplies. In the off condition, signal levels up to the supplies are blocked. Both switches exhibit break-before-make switching action for use in multiplexer applications.
- 3 pF off capacitance (±15 V supply).
- 1 pC charge injection.
- 3 V logic-compatible digital inputs: VIH = 2.0 V, VIL = 0.8 V.
- No VL logic power supply required.
- Ultralow power dissipation: <0.03 µW.
- 16-lead TSSOP and 12-lead 3 mm × 3 mm LFCSP packages.
- Automatic test equipment
- Data acquisition systems
- Battery-powered systems
- Sample-and-hold systems
- Audio/video signal routing
- Communication systems
A 16-lead TSSOP device can be clamped or soldered to the center of the evaluation board. Each pin of the device has a corresponding link from K1 to K16 that can be set to either VDD or GND. A wire screw terminal supplies VDD and GND. SMB connectors on the board allow additional external signals to be supplied to the device. In addition, there is space available at the top of the board for prototyping.
Full specifications of the device under test (DUT) are available in the corresponding product data sheet, which should be consulted in conjunction with this user guide when using the evaluation board.
Product Selection Guide
Switches and Multiplexers Product Selection Guide
Data-acquisition system uses fault protection
By Catherine Redmond, Analog Devices, Inc. (EDN, 4/15/2004)
CMOS Switches Offer High Performance in Low Power, Wideband Applications
by Theresa Corrigan and Ray Goggin, Analog Devices, Inc. (High Frequency Electronics, February 2004)
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