DG449 Datasheet, PDF (1/9 Pages) Vishay Siliconix – High Voltage Single SPDT Analog Switch in SOT23-8

DG449
Vishay Siliconix
High Voltage Single SPDT Analog Switch in SOT23-8
DESCRIPTION
The DG449 is a dual supply single-pole/double-throw
(SPDT) switches. On resistance is 38 Ω and flatness is 2.6 Ω
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 applica-
tion areas are in the routing and switching in telecommunica-
tions and test equipment. Combining low power, low
leakages, low on-resistance and small physical size, the
DG449 is also ideally suited for portable and battery pow-
ered industrial and military equipment.
The DG449 operates either from a single + 7 V to 36 V sup-
ply or from dual ± 4.5 V to ± 20 V supplies. It is offered in the
very popular, small SOT23-8 package.
FEATURES
• ± 15 V Analog Signal Range
• On-Resistance - r_DS(on): 38 Ω max
• V_L Logic Supply Not Required
• TTL CMOS Input Compatible
• Rail To Rail Signal Handling
• Dual Or Single Supply Operation
RoHS
COMPLIANT
BENEFITS
• Wide Dynamic Range
• Low Signal Errors and Distortion
• Break-Before-Make Switching Action
• Simple Interfacing
• Small SOT23-8ld package; 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
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG449
TRUTH TABLE
Logic
0
1
NC
ON
OFF
NO
OFF
ON
Logic "0" ≤ 0.8 V
Logic "1" ≥ 2.4 V
Document Number: 73897
S-60861–Rev. A, 22-May-06
www.vishay.com
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