DG183 Datasheet, PDF (1/9 Pages) TEMIC Semiconductors – High-Speed Drivers with Dual DPST JFET Switches

DG183/184/185
Vishay Siliconix
High-Speed Drivers and 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 (I_D(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
D_{1 1}
NC
2
D_{3 3}
S_{3 4}
S_{4 5}
D_{4 6}
NC
7
D_{2 8}
Dual-In-Line
Top View
16 ^S1
15 ^IN1
14 ^V–
13 ^VR
12 ^VL
V+
11
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–*
V_L
7
8
V_R
Refer to JAN38510 Information, Military Section
*Common to Substrate and Case
Document Number: 70032
S-52895—Rev. D, 16-Jun-97
TRUTH TABLE
Logic
Switch
0
OFF
1
ON
Logic “0” v 0.8 V
Logic “1” w 2.0 V
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