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دیتاشیت - TEMICs - High-Speed Drivers with Dual DPST JFET Switches

شماره قطعه DG183BP
شرح مفصل High-Speed Drivers with Dual DPST JFET Switches
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DG183BP شرح
DG183/184/185
High-Speed Drivers with Dual DPST JFET Switches
Features
D Constant On-Resistance Over
Entire Analog Range
D Low Leakage
D Low Crosstalk
D Break-Before-Make Switching
D Rad Hardness
Benefits
D Low Distortion
D Eliminates Large Signal Errors
D High Precision
D Improved Channel Isolation
D Eliminates Inadvertent Shorting
Between Channels
D Fault Protection
Applications
D Audio Switching
D Precision Switching
D Video Switching
D Video Routing
D Sample/Hold
D Aerospace
Description
The DG183/184/185 are precision dual double-pole,
single-throw (DPST) analog switches designed to provide
accurate switching of video and audio signals. This series
is ideally suited for applications requiring a constant
on-resistance over the entire analog range.
The major difference in the devices is the on-resistance
(DG183—10 W, DG184—30 W, DG185—75 W). Reduced
errors are achieved through low leakage current (ID(on)
< 2 nA). Applications which benefit from the flat JFET
on-resistance include audio switching, video switching, and
data acquisition.
To achieve fast and accurate switch performance, each
device comprises four n-channel JFET transistors and a
TTL compatible bipolar driver. In the on state, each switch
conducts current equally well in either direction. In the off
condition, the switches will block up to 20 V peak-to-peak,
with feedthrough of less than –60 dB at 10 MHz.
Functional Block Diagram and Pin Configuration
D1 1
NC 2
D3 3
S3 4
S4 5
D4 6
NC 7
D2 8
16 S1
15 IN1
14 V–
13 VR
Dual-In-Line
Top View
12 VL
11 V+
10 IN2
9 S2
S4 1 14 S3
D4 2 13 D3
D2 3 Flat 12 D1
S2 4 Package 11 S1
IN2 5 Top View 10 IN1
V+ 6 9 V–*
VL 7 8 VR
Refer to JAN38510 Information, Military Section
*Common to Substrate and Case
Truth Table
Logic
Switch
0 OFF
1 ON
Logic “0” v 0.8 V
Logic “1” w 2.0 V
Updates to this data sheet may be obtained via facsimile by calling Siliconix FaxBack, 1-408-970-5600. Please request FaxBack document #70032.
Siliconix
S-52895—Rev. D, 16-Jun-97
1

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