DG444B Datasheet, PDF (1/7 Pages) Vishay Siliconix – Improved Quad SPST CMOS Analog Switches

New Product
DG444B/445B
Vishay Siliconix
Improved Quad SPST CMOS Analog Switches
FEATURES
D Low On-Resistance: 45 W
D Low Power Consumption: 1.0 mW
D Fast Switching Action—t_ON: 120 ns
D Low Charge Injection
D TTL/CMOS Logic Compatible
BENEFITS
D Low Signal Errors and Distortion
D Reduced Power Supply Consumption
D Faster Throughput
D Reduced Pedestal Errors
D Simple Interfacing
APPLICATIONS
D Audio Switching
D Data Acquisition
D Sample-and-Hold Circuits
D Communication Systems
D Automatic Test Equipment
D Medical Instruments
DESCRIPTION
The DG444B/445B are monolithic quad analog switches
designed to provide high speed, low error switching of analog
and audio signals. The DG444B/445B are upgrades to the
original DG444/445.
Combing low on-resistance (45 Ω, typ.) with high speed (t_ON
120 ns, typ.), the DG444B/445B 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/445B 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.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG444B
Dual-In-Line and SOIC
IN₁ 1
D₁ 2
S_{1 3}
V− 4
GND 5
S₄ 6
D₄ 7
IN₄ 8
16 IN2
15 D2
14 S2
13 V+
12 V_L
11 S3
10 D₃
9 IN₃
Top View
DG444B
QFN16 (4x4 mm)
D₁ IN₁ IN₂ D₂
16 15 14 13
S₁ 1
V− 2
GND 3
S₄ 4
12 S2
11 V+
10 ^VL
9 ^S3
TRUTH TABLE
Logic
DG444B DG445B
0
ON
OFF
1
OFF
ON
Logic “0” v 0.8 V
Logic “1” w 2.4 V
ORDERING INFORMATION
Temp Range
Package
Part Number
−40 to 85_C
16-Pin Plastic DIP
16-Pin Narrow SOIC
16-Pin QFN 4x4 mm
DG444BDJ
DG445BDJ
DG444BDY
DG445BDY
DG444BDN
DG445BDN
5 678
D₄ IN₄ IN₃ D₃
Top View
Document Number: 72626
S-32554—Rev. A, 15-Dec-03
www.vishay.com
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