DESCRIPTION
The DG201B, DG202B analog switches are highly improved versions of the industry-standard DG201A, DG202. These devices are fabricated in Vishay Siliconix’ proprietary silicon gate CMOS process, resulting in lower on-resistance, lower leakage, higher speed, and lower power consumption.
These quad single-pole single-throw switches are designed for a wide variety of applications in telecommunications, instrumentation, process control, computer peripherals, etc. An improved charge injection compensation design minimizes switching transients. The DG201B and DG202B can handle up to ± 22 V input signals, and have an improved continuous current rating of 30 mA. An epitaxial layer prevents latchup.
All devices feature true bi-directional performance in the on condition, and will block signals to the supply voltages in the off condition.
The DG201B is a normally closed switch and the DG202B is a normally open switch. (see Truth Table.)

FEATURES
• ± 22 V supply voltage rating
• TTL and CMOS compatible logic
• Low on-resistance - RDS(on): 45 Ω
• Low leakage - ID(on): 20 pA
• Single supply operation possible
• Extended temperature range
• Fast switching - tON: 120 ns
• Low glitching - Q: 1 pC
• Compliant to RoHS Directive 2002/95/EC

BENEFITS
• Wide analog signal range
• Simple logic interface
• Higher accuracy
• Minimum transients
• Reduced power consumption
• Superior to DG201A, DG202
• Space savings (TSSOP)

APPLICATIONS
• Industrial instrumentation
• Test equipment
• Communications systems
• Disk drives
• Computer peripherals
• Portable instruments
• Sample-and-hold circuits