DG444B, DG445B
Vishay Siliconix
Improved Quad SPST CMOS Analog Switches
DESCRIPTION
The DG444B, DG445B are monolithic quad analog switches
designed to provide high speed, low error switching of analog
and audio signals. The DG444B, DG445B are upgrades to
the original DG444, DG445.
Combing low on-resistance (45
,
typ.) with high speed
(t
ON
120 ns, typ.), the DG444B, DG445B are ideally suited
for Data Acquisition, Communication Systems, Automatic
Test Equipment, or Medical Instrumentation. Charge
injection has been minimized on the drain for use in
sample-and-hold circuits.
The DG444B, DG445B are built using Vishay Siliconix’s
high-voltage silicon-gate process. An epitaxial layer prevents
latchup.
When on, each switch conducts equally well in both
directions and blocks input voltages to the supply levels
when off.
FEATURES
•
Halogen-free according to IEC 61249-2-21
Definition
• Low On-Resistance: 45 W
• Low Power Consumption: 1 mW
• Fast Switching Action - t
ON
: 120 ns
• Low Charge Injection
• TTL/CMOS-Compatible Logic
• Compliant to RoHS Directive 2002/95/EC
BENEFITS
•
•
•
•
•
•
•
•
•
•
•
Low Signal Errors and Distortion
Reduced Power Supply Consumption
Faster Throughput
Reduced Pedestal Errors
Simple Interfacing
Audio Switching
Data Acquisition
Sample-and-Hold Circuits
Communication Systems
Automatic Test Equipment
Medical Instruments
APPLICATIONS
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG444B
Dual-In-Line and SOIC
IN
1
D
1
S
1
V-
GND
S
4
D
4
IN
4
1
2
3
4
5
6
7
8
Top View
16
15
14
13
12
11
10
9
IN
2
D
2
S
2
V+
V
L
S
3
D
3
IN
3
TRUTH TABLE
Logic
0
1
Logic "0"
0.8
V
Logic "1"
2.4
V
DG444B
ON
OFF
DG445B
OFF
ON
DG444B
QFN16 (4 x 4 mm)
D
1
IN
1
IN
2
D
2
16
15
14
13
ORDERING INFORMATION
Temp Range
Package
Part Number
DG444BDJ
DG444BDJ-E3
DG445BDJ
DG445BDJ-E3
DG444BDY-E3
DG444BDY-T1-E3
DG445BDY-E3
DG445BDY-T1-E3
DG444BDN-T1-E4
DG445BDN-T1-E4
S
1
V-
GND
S
4
1
2
3
4
12
11
10
9
S
2
V+
V
L
S
3
16-pin Plastic DIP
- 40 °C to 85 °C
16-pin Narrow SOIC
5
6
7
8
D
4
IN
4
IN
3
D
3
Top View
16 pin QFN 4 x 4 mm
Document Number: 72626
S11-1350-Rev. B, 04-Jul-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