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Vishay Siliconix - High-Speed Drivers with Dual SPST JFET Switches

Numéro de référence DG180
Description High-Speed Drivers with Dual SPST JFET Switches
Fabricant Vishay Siliconix 
Logo Vishay Siliconix 





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DG180 fiche technique
DG180/181/182
Vishay Siliconix
High-Speed Drivers with Dual SPST JFET Switches
FEATURES
D Constant On-Resistance Over
Entire Analog Range
D Low Leakage
D Low Crosstalk
D Rad Hardness
BENEFITS
D Low Distortion
D Eliminates Large Signal Errors
D High Precision
D High Bandwidth Capability
D Fault Protection
APPLICATIONS
D Audio Switching
D Video Switching
D Sample/Hold
D Guidance and Control Systems
D Aerospace
DESCRIPTION
The DG180/181/182 are precision dual single-pole,
single-throw (SPST) 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
(DG180—10 W, DG181—30 W, DG182—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
S1 1
D1 2
NC 3
NC 4
IN1 5
V+ 6
VL 7
Dual-In-Line
Top View
14 S2
13 D2
12 NC
11 NC
10 IN2
9 V–
8 VR
S1 1 14 S2
D1 2 13 D2
NC 3 12 NC
Flat
NC 4 Package 11 NC
IN1 5 Top View 10 IN2
V+ 6 9 V–*
VL 7 8 VR
Refer to JAN38510 Information, Military Section
S2
S1 D2
10
19
D1
2
IN2
8
IN1 3 Metal Can 7 V–
Top View
46
V+ 5 VR
VL
Document Number: 70031
S-52895—Rev. D, 16-Jun-97
*Common to Substrate and Case
TRUTH TABLE
Logic
0
1
Switch
ON
OFF
Logic “0” v 0.8 V
Logic “1” w 2.0 V
www.vishay.com S FaxBack 408-970-5600
4-1

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