Datasheet > ADG439F_15

ADG439F_15

更新时间： 2024-11-27 01:17:59

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	323K
描述
High Performance, 4-/8-Channel, Fault-Protected Analog Multiplexers

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ADG439F_15 数据手册

High Performance, 4-/8-Channel,

Fault-Protected Analog Multiplexers

ADG438F/ADG439F

FEATURES

FUNCTIONAL BLOCK DIAGRAM

All switches off with power supply off

ADG438F

Analog output of on channel clamped within power supplies

if an overvoltage occurs

Latch-up proof construction

Fast switching times

_ON250 ns maximum

_OFF150 ns maximum

Fault and overvoltage protection: −40 V to +55 V

Break-before-make construction

1 OF 8

DECODER

TTL- and CMOS-compatible inputs

APPLICATIONS

A0 A1 A2 EN

Figure 1.

Data acquisition systems

Industrial and process control systems

Avionics test equipment

Signal routing between systems

High reliability control systems

ADG439F

S1A

S4A

GENERAL DESCRIPTION

S1B

S4B

The ADG438F and ADG439F are CMOS analog multiplexers, with

the ADG438F comprising eight single channels and the ADG439F

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.

1 OF 4

DECODER

Figure 2.

PRODUCT HIGHLIGHTS

1. Fault Protection. The ADG438F and ADG439F can with-

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.

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.

2. On channel saturates while fault exists.

3. Low R_ON

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

channel-to-channel isolation of the ADG438F/ADG439F.

Rev. E

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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与ADG439F_15相关器件

型号	品牌	获取价格	描述	数据表
ADG439FBN	ADI	获取价格	High Performance 4/8 Channel Fault-Protected Analog Multiplexers
ADG439FBN	ROCHESTER	获取价格	4-CHANNEL, DIFFERENTIAL MULTIPLEXER, PDIP16, PLASTIC, DIP-16
ADG439FBNZ	ROCHESTER	获取价格	4-CHANNEL, DIFFERENTIAL MULTIPLEXER, PDIP16, PLASTIC, DIP-16
ADG439FBR	ADI	获取价格	High Performance 4/8 Channel Fault-Protected Analog Multiplexers
ADG439FBR	ROCHESTER	获取价格	4-CHANNEL, DIFFERENTIAL MULTIPLEXER, PDSO16, 0.150 INCH, SOIC-16
ADG439FBRN	ETC	获取价格	4-Channel Analog Multiplexer
ADG439FBR-REEL	ADI	获取价格	High Performance, 4-Channel, Fault-Protected Analog Multiplexer
ADG439FBRW	ADI	获取价格	High Performance 4/8 Channel Fault-Protected Analog Multiplexers
ADG439FBRW	ROCHESTER	获取价格	4-CHANNEL, DIFFERENTIAL MULTIPLEXER, PDSO16, 0.300 INCH, SOIC-16
ADG439FBRW-REEL	ROCHESTER	获取价格	4-CHANNEL, DIFFERENTIAL MULTIPLEXER, PDSO16, 0.300 INCH, SOIC-16

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