ADG1233/ADG1234 iCMOS switches enable faster signal capture and processing in applications where low capacitance and charge injection properties result in faster settling times and low glitch.
Manufactured on ADI’s proprietary iCMOS™ (industrial CMOS) process technology, the ADG1233 and ADG1234 single-pole double-throw (SPDT) switches operate with ±12-V or ±15-V supplies, delivering the industry’s lowest capacitance and charge injection. Their low off-capacitance (1.5 pF) and charge injection (<1 pC) make them ideal for data-acquisition and sample-and-hold applications that require low glitch and fast settling; their fast on/off switching speed (120/40 ns); and their wide –3-dB bandwidth (900 MHz) make them well suited for video switching (external video buffers may be required). The switches features 120-ohm on resistance, 3.5 ohm channel-to-channel match, and 20 ohm variation over the 0-to-VDD signal range.
The ADG1233/ADG1234 devices meet a need among industrial design engineers for analog switches that increase data acquisition speeds. These new ICs satisfy this requirement by offering the lowest available capacitance and charge injection. Their low capacitance and low charge injection cause smaller glitches and lower offset voltages, thus enabling faster sampling and increased performance in data-acquisition systems and video signal routers.
Reduced Board Space and Ultra-Low Power Dissipation
The ADG1233 triple SPDT switch is offered in 16-lead TSSOP and 4 mm × 4 mm LFCSP packages. The ADG1234 quad SPDT switch is offered in 20-lead TSSOP and 4 mm × 4 mm LFCSP packages. These small packages enable a 77 percent reduction in board space compared to competing solutions. The ultra-low power dissipation (< 0.03 μW) achieved by the iCMOS process technology also makes these devices well suited for portable and battery-powered instrumentation equipment.
Availability and Pricing
The ADG1233 and ADG1234 monolithic analog switches are available in production now and priced at $3.95 per unit in 1,000-piece quantities. Both devices are offered over the extended industrial temperature range (–40 degrees C to +125 degrees C).
