DG180 Datasheet, PDF (1/8 Pages) Vishay Siliconix – High-Speed Drivers with Dual SPST JFET Switches

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 (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
S_{1 1}
D_{1 2}
NC ₃
NC ₄
IN_{1 5}
V+ ₆
V_{L 7}
Dual-In-Line
Top View
14 ^S2
13 ^D2
12 ^NC
11 ^NC
10 ^IN2
9 ^V–
8
V_R
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–*
V_L
7
8
V_R
Refer to JAN38510 Information, Military Section
S₂
S₁
D₂
10
1
9
D₁
2
IN₂
8
IN₁ ³
Metal Can
7
V–
Top View
4
6
V+
5
V_R
V_L
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
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