参数资料
型号: 781401CA
厂商: VISHAY SILICONIX
元件分类: 多路复用及模拟开关
英文描述: DUAL 2-CHANNEL, DBL POLE SGL THROW SWITCH, CDIP14
封装: SIDEBRAZED, DIP-14
文件页数: 1/3页
文件大小: 35K
代理商: 781401CA
IN2
V+
D2
IN1
D4
Dual-In-Line
S4
S3
V–
S1
1
2
NC
3
4
5
6
7
14
13
12
11
10
9
8
Top View
D3
D1
VR (ENABLE)
S2
DG129
Siliconix
S-44054—Rev. C, 16-Oct-95
1
Not Recommended for New Designs
Dual DPST JFET Analog Switch
Features
Benefits
Applications
D Standby Power: <1 mW
D Bipolar Drivers
D Constant rDS(on) Over Signal Range
D Off Isolation: > 60 dB @ 1 MHz
D Make-Before-Break
D Minimizes Standby Power Requirements
D Better Radiation Tolerance
D Less Distortion
D Higher Frequency Switching
D Smooth Closed Loop Response
D Battery Powered Systems
D Aerospace Control Systems
D Low Distortion Circuits
D High Frequency Switching
Circuits
Description
The DG129 is a dual double-pole single-throw analog
switch for use in instrumentation, control, and audio
communication
systems.
It
is
ideally
suited
for
applications requiring a constant on-resistance over the
entire analog range.
On-resistance for the DG129 is 20
W (typical), and
on-leakage is < 2 nA. With all switches off, total power
consumption is < 750
mW. These switches have
make-before-break action and due to the processing are
relatively radiation tolerant. An enable pin (VR)
simplifies interfacing with microprocessor, or other logic.
Each device contains four junction field-effect transistors
(JFETs) to achieve constant on-resistance. Level-shifting
drivers enable low-level inputs (0.8 to 2.5 V) to control
the on-off state of each switch. With logic “0” at the driver
input the switches will be off. With a logic “1” at the input
the switches will be on. In the on-state each switch will
conduct current in either direction, and in the off-state
each switch will block voltages up to 20 V peak-to-peak.
Functional Block Diagram and Pin Configuration
Two DPST Switches per Package
Truth Table
Logic
Switch
0
OFF
1
ON
Logic “0”
v 0.8 V
Logic “1”
w 2.5 V
Switches Shown for Logic “1” Input
Ordering Information
Temp Range
Package
Part Number
55 to 125
_C
14 Pin Sidebraze
DG129AP/883
–55 to 125
_C
14-Pin Sidebraze
781401CA
Updates to this data sheet may be obtained via facsimile by calling Siliconix FaxBack, 1-408-970-5600. Please request FaxBack document #70030.
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