FEATURES
• ± 15 V analog signal range
• On-resistance - RDS(on): 25 Ωmax.
• Fast switching action - tON: 100 ns
• VL logic supply not required
• TTL CMOS input compatible
• Rail to rail signal handling
• Dual or single supply operation
• Compliant to RoHS Directive 2002/95/EC

BENEFITS
• Wide dynamic range
• Low signal errors and distortion
• Break-before-make switching action
• Simple interfacing
• Reduced board space
• Improved reliability

APPLICATIONS
• Precision test equipment
• Precision instrumentation
• Communications systems
• PBX, PABX systems
• Audio equipment
• Redundant systems
• PC multimedia boards
• Hard disc drives

DESCRIPTION
The DG447, DG448 are dual supply single-pole/single-throw
(SPST) switches. On resistance is 25 W maximum and
flatness is 2.2 W max over the specified analog signal range.
These analog switches were designed to provide high
speed, low error switching of precision analog signals. The
primary application areas are in the routing and switching in
telecommunications and test equipment. Combining low
power, low leakages, low on-resistance and small physical
size, the DG477, DG448 are also ideally suited for portable
and battery powered industrial and military equipment.
The DG477 has one normally closed switch, while the
DG448 switch is normally open. They operate either from a
single + 7 V to 36 V supply or from dual ± 4.5 V to ± 20 V
supplies. They are offered in the very popular, small TSOP6
package.