DG444, DG445
Vishay Siliconix
Quad SPST CMOS Analog Switches
APPLICATIONS
• Audio switching
• Battery powered systems
• Data acquisition
• Sample-and-hold circuits
• Telecommunication systems
• Automatic test equipment
• Single supply circuits
• Hard disk drives
FEATURES
•
Low on-resistance: 50
• Low leakage: 80 pA
• Low power consumption: 22 nW
• Fast switching action - t
ON
: 120 ns
• Low charge injection
• DG211, DG212 upgrades
•
TTL/CMOS logic compatible
BENEFITS
•
Low signal errors and distortion
• Reduced power supply requirements
• Faster throughput
• Improved reliability
• Reduced pedestal errors
DESCRIPTION
The DG444, DG445 monolithic quad analog switches are
designed to provide high speed, low error switching of analog
signals. The DG444 has a normally closed function. The
DG445 has a normally open function. Combining low power
(22 nW, typ) with high speed (t
ON
: 120 ns, typ.), the DG444,
DG445 are ideally suited for upgrading DG211, DG212
sockets. Charge injection has been minimized on the drain
for use in sample-and-hold circuits.
To achieve high-voltage ratings and superior switching
performance, the DG444, DG445 are built on Vishay
Siliconix’s high-voltage silicon-gate process. An epitaxial
layer prevents latchup.
Each switch conducts equally well in both directions when
on, and blocks input voltages to the supply levels when off.
•
Simple interfacing
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
Dual-In-Line and SOIC
IN
1
D
1
S
1
V-
GND
S
4
D
4
IN
4
1
2
3
4
16
15
14
13
IN
2
D
2
S
2
V+
V
L
TRUTH TABLE
Logic
0
1
Logic "0"
0.8
V
Logic "1"
2.4
V
DG444
On
Off
DG445
Off
On
DG444
5
6
7
8
12
11
10
9
ORDERING INFORMATION
S
3
D
3
IN
3
Temp. Range
Package
16-pin plastic DIP
Part Number
DG444DJ
DG445DJ
DG444DY
DG445DY
- 40 °C to 85 °C
16-pin narrow SOIC
Top View
Document Number: 70054
S11-0984-Rev. G, 23-May-11
www.vishay.com
1
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000