DG540 Datasheet, PDF (1/11 Pages) TEMIC Semiconductors – Wideband/Video T Switches

DG540/541/542
Vishay Siliconix
Wideband/Video “T” Switches
FEATURES
D Wide Bandwidth: 500 MHz
D Low Crosstalk: –85 dB
D High Off-Isolation: –80 dB @ 5 MHz
D “T” Switch Configuration
D TTL and CMOS Logic Compatible
D Fast Switching—t_ON: 45 ns
D Low r_DS(on): 30 W
BENEFITS
D Flat Frequency Response
D High Color Fidelity
D Low Insertion Loss
D Improved System Performance
D Reduced Board Space
D Reduced Power Consumption
D Improved Data Throughput
APPLICATIONS
D RF and Video Switching
D RGB Switching
D Local and Wide Area Networks
D Video Routing
D Fast Data Acquisition
D ATE
D Radar/FLR Systems
D Video Multiplexing
DESCRIPTION
The DG540/541/542 are high performance monolithic
wideband/video switches designed for switching RF, video
and digital signals. By utilizing a “T” switch configuration on
each channel, these devices achieve exceptionally low
crosstalk and high off-isolation. The crosstalk and off-isolation
of the DG540 are further improved by the introduction of extra
GND pins between signal pins.
To achieve TTL compatibility, low channel capacitances and
fast switching times, the DG540 family is built on the
Vishay Siliconix proprietary D/CMOS process. Each switch
conducts equally well in both directions when on.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG540
Dual-In-Line
IN_{1 1}
D_{1 2}
GND ₃
S_{1 4}
V– ₅
GND ₆
S_{4 7}
GND ₈
D_{4 9}
IN_{4 10}
20 ^IN2
19 ^D2
18 ^GND
17 ^S2
16 ^V+
15 ^GND
14 ^S3
13 ^GND
12 ^D3
11 ^IN3
Top View
DG540
PLCC
3 2 1 20 19
S₁ 4
V– 5
GND 6
S₄ 7
GND 8
18 GND
17 S₂
16 V+
15 GND
14 S₃
9 10 11 12 13
Top View
TRUTH TABLE
Logic
Switch
0
OFF
1
ON
Logic “0” v 0.8 V
Logic “1” w 2 V
Document Number: 70055
S-00399—Rev. G, 13-Sep-99
www.vishay.com S FaxBack 408-970-5600
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