DG641/642/643
Vishay Siliconix
Low On-Resistance Wideband/Video Switches
FEATURES
D
D
D
D
D
D
D
Wide Bandwidth: 500 MHz
Low Crosstalk at 5 MHz: 鈥?5 dB
Low r
DS(on)
: 5
W
, DG642
TTL Logic Compatible
Fast Switching: t
ON
50 ns
Single Supply Compatibility
High Current: 100 mA, DG642
BENEFITS
D
D
D
D
D
D
High Precision
Improved Frequency Response
Low Insertion Loss
Improved System Performance
Reduced Board Space
Low Power Consumption
APPLICATIONS
D
D
D
D
D
D
D
D
RF and Video Switching
RGB Switching
Video Routing
Cellular Communications
ATE
Radar/FLIR Systems
Satellite Receivers
Programmable Filters
DESCRIPTION
The DG641/642/643 are high performance monolithic video
switches designed for switching wide bandwidth analog and
digital signals. DG641 is a quad SPST, DG642 is a single
SPDT, and DG643 is a dual SPDT function. These devices
have exceptionally low on-resistances (5
W
typ鈥擠G642), low
capacitance and high current handling capability.
To achieve TTL compatibility, low channel capacitances and
fast switching times, the DG641/642/643 are built on the
Vishay Siliconix proprietary D/CMOS process. Each switch
conducts equally well in both directions when on, and blocks
up to 14 V
p-p
when off. An epitaxial layer prevents latchup.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
Dual-In-Line and SOIC
IN
1
D
1
S
1
V鈥?/div>
GND
S
4
D
4
IN
4
1
2
3
4
DG641
5
6
7
8
Top View
16 IN
2
15 D
2
14 S
2
13 V+
12 GND
11 S
3
10 D
3
9
IN
3
S
1
D
1
V鈥?/div>
GND
1
2
3
4
Dual-In-Line and SOIC
IN
1
D
1
GND
8
7
6
IN
S
1
V+
V鈥?/div>
D
2
S
4
S
2
GND
D
4
1
2
3
4
5
6
7
8
Dual-In-Line and SOIC
IN
2
D
2
GND
S
2
V+
S
3
GND
D
3
16
15
14
13
12
11
10
DG642
Top View
5
DG643
Top View
9
TRUTH TABLE DG641
Logic
0
1
Logic 鈥?鈥?/div>
v
0.8 V
Logic 鈥?鈥?/div>
w
2.4 V
Document Number: 70058
S-52433鈥擱ev. E, 06-Sep-99
TRUTH TABLE DG642
Logic
0
1
TRUTH TABLE
Logic
0
1
DG643
SW
3
, SW
4
ON
OFF
Switch
OFF
ON
SW
1
OFF
ON
Logic 鈥?鈥?/div>
v
0.8 V
Logic 鈥?鈥?/div>
w
2.4 V
SW
2
ON
OFF
SW
1
, SW
2
OFF
ON
Logic 鈥?鈥?/div>
v
0.8 V
Logic 鈥?鈥?/div>
w
2.4 V
www.vishay.com
S
FaxBack 408-970-5600
4-1
DG642相關(guān)型號PDF文件下載
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