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| 型號： | ADG439FBRZ-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MULTIPLEXER DUAL 4X1 16SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Switch Fundamentals |
| 標準包裝： | 2,500 |
| 功能： | 多路復(fù)用器 |
| 電路： | 2 x 4:1 |
| 導(dǎo)通狀態(tài)電阻： | 270 歐姆 |
| 電壓電源： | 雙電源 |
| 電壓 - 電源，單路/雙路(±)： | ±15V |
| 電流 - 電源： | 50µA |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SOIC N |
| 包裝： | 管件 |
High Performance, 4-/8-Channel,
Fault-Protected Analog Multiplexers
Rev. E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2011 Analog Devices, Inc. All rights reserved.
FEATURES
All switches off with power supply off
Analog output of on channel clamped within power supplies
if an overvoltage occurs
Latch-up proof construction
Fast switching times
tON 250 ns maximum
tOFF 150 ns maximum
Fault and overvoltage protection: 40 V to +55 V
Break-before-make construction
TTL- and CMOS-compatible inputs
APPLICATIONS
Data acquisition systems
Industrial and process control systems
Avionics test equipment
Signal routing between systems
High reliability control systems
GENERAL DESCRIPTION
comprising four differential channels. These multiplexers provide
fault protection. Using a series n-channel, p-channel, and
n-channel MOSFET structure, both device and signal source
protection is provided in the event of an overvoltage or power
loss. The multiplexer can withstand continuous overvoltage
inputs from 40 V to +55 V. During fault conditions with power
supplies off, the multiplexer input (or output) appears as an open
circuit and only a few nanoamperes of leakage current flows. This
protects not only the multiplexer and the circuitry driven by the
multiplexer, but also protects the sensors or signal sources which
drive the multiplexer.
The ADG438F switches one of eight inputs to a common output
as determined by the 3-bit binary address lines, A0, A1, and A2.
The ADG439F switches one of four differential inputs to a
common differential output as determined by the 2-bit binary
address lines, A0 and A1. An EN input on each device is used
to enable or disable the device. When disabled, all channels are
switched off.
FUNCTIONAL BLOCK DIAGRAM
S1
S8
A0
D
ADG438F
A1 A2 EN
1 OF 8
DECODER
00
46
8
-00
1
Figure 1.
S1A
A0
DA
ADG439F
A1
S4A
S1B
S4B
DB
EN
1 OF 4
DECODER
004
68
-101
Figure 2.
PRODUCT HIGHLIGHTS
1.
stand continuous voltage inputs up to 40 V or +55 V.
When a fault occurs due to the power supplies being
turned off, all the channels are turned off and only a
leakage current of a few nanoamperes flows.
2.
On channel saturates while fault exists.
3.
Low RON.
4.
Fast Switching Times.
5.
Break-Before-Make Switching. Switches are guaranteed
break-before-make so that input signals are protected
against momentary shorting.
6.
Trench Isolation Eliminates Latch-Up. A dielectric trench
separates the p-channel and n-channel MOSFETs thereby
preventing latch-up.
7.
Improved Off Isolation. Trench isolation enhances the
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