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
D
D
D
D
Low Distortion
Eliminates Large Signal Errors
High Precision
High Bandwidth Capability
Fault Protection
APPLICATIONS
D
D
D
D
D
Audio Switching
Video Switching
Sample/Hold
Guidance and Control Systems
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.
on-resistance include audio switching, video switching, and
data acquisition.
The major difference in the devices is the on-resistance
(DG180鈥?0
W
, DG181鈥?0
W
, DG182鈥?5
W).
Reduced
errors are achieved through low leakage current (I
D(on)
< 2 nA). Applications which benefit from the flat JFET
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 鈥?0 dB at 10 MHz.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
S
1
D
1
NC
NC
IN
1
V+
V
L
1
2
3
4
5
6
7
Dual-In-Line
Top View
14
13
12
11
10
9
8
S
2
D
2
NC
NC
IN
2
V鈥?/div>
V
R
S
1
D
1
NC
NC
IN
1
V+
V
L
1
2
3
4
5
6
7
14
13
12
Flat
Package 11
Top View 10
9
8
S
2
D
2
NC
NC
IN
2
V鈥?
V
R
IN
1
D
1
2
3
4
Refer to JAN38510 Information, Military Section
V+
S
1
S
2
D
2
9
IN
2
8
7
6
5
V
L
V
R
V鈥?/div>
10
1
Metal Can
Top View
*Common to Substrate and Case
TRUTH TABLE
Logic
0
1
Logic 鈥?鈥?/div>
v
0.8 V
Logic 鈥?鈥?/div>
w
2.0 V
20
Document Number: 70031
S-52895鈥擱ev. D, 16-Jun-97
www.vishay.com
S
FaxBack 408-970-5600
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