Datasheet > ADG5249FBRUZ-RL7

ADG5249FBRUZ-RL7

更新时间： 2024-11-29 01:15:35

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
33页	663K
描述
User Defined Fault Protection and Detection, 0.8 pC QINJ, 8-1/Dual 4-1 Multiplexers

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ADG5249FBRUZ-RL7 数据手册

User Defined Fault Protection and

Detection, 0.8 pC Q_INJ, 8:1/Dual 4:1 Multiplexers

Data Sheet

ADG5248F/ADG5249F

FEATURES

FUNCTIONAL BLOCK DIAGRAMS

User defined secondary supplies set overvoltage level

Overvoltage protection up to −55 V and +55 V

Power-off protection up to −55 V and +55 V

Overvoltage detection on source pins

Minimum secondary supply level: 4.5 V single-supply

Interrupt flags indicate fault status

Low charge injection (Q_INJ): 0.8 pC

ADG5248F

Low drain/source on capacitance

ADG5248F: 19 pF

ADG5249F: 14 pF

FAULT DETECTION

AND

SWITCH DRIVER

Latch-up immune under any circumstance

Known state without digital inputs present

A0 A1 A2 EN POSFV NEGFV

Figure 1. ADG5248F Functional Block Diagram

V_SSto V_DDanalog signal range

5 V to 22 V dual supply operation

8 V to 44 V single-supply operation

Fully specified at 15 V, 20 V, +12 V, and +36 V

ADG5249F

S1A

APPLICATIONS

S4A

Analog input/output modules

Process control/distributed control systems

Data acquisition

S1B

S4B

Instrumentation

Avionics

Automatic test equipment

Communication systems

Relay replacement

FAULT DETECTION

AND

SWITCH DRIVER

A0 A1 EN POSFV NEGFV

Figure 2. ADG5249F Functional Block Diagram

The low capacitance and charge injection of these switches make

them ideal solutions for data acquisition and sample-and-hold

applications, where low glitch switching and fast settling times

are required.

GENERAL DESCRIPTION

The ADG5248F and ADG5249F are 8:1 and dual 4:1 analog

multiplexers. The ADG5248F switches one of eight inputs to a

common output, and the ADG5249F switches one of four differen-

tial inputs to a common differential output. Each channel conducts

equally well in both directions when on, and each channel has an

input signal range that extends to the supplies. The primary supply

voltages define the on-resistance profile, whereas the secondary

supply voltages define the voltage level at which the overvoltage

protection engages.

Note that, throughout this data sheet, multifunction pins, such as

A0/F0, are referred to either by the entire pin name or by a single

function of the pin, for example, A0, when only that function is

relevant.

PRODUCT HIGHLIGHTS

1. Source pins are protected against voltages greater than the

secondary supply rails, up to −55 V and +55 V.

2. Source pins are protected against voltages between −55 V

and +55 V in an unpowered state.

3. Overvoltage detection with digital output indicates

operating state of switches.

When no power supplies are present, the channel remains in the off

condition, and the switch inputs are high impedance. Under normal

operating conditions, if the analog input signal levels on any Sx pin

exceed positive fault voltage (POSFV) or negative fault voltage

(NEGFV) by a threshold voltage (V_T), the channel turns off and

that Sx pin becomes high impedance. If the switch on, the drain pin

is pulled to the secondary supply voltage that was exceeded. Input

signal levels up to +55 V or −55 V relative to ground are blocked, in

both the powered and unpowered conditions.

4. Trench isolation guards against latch-up.

5. Optimized for low charge injection and on capacitance.

6. The ADG5248F/ADG5249F can be operated from a dual

supply of 5 V to 22 V or a single power supply of 8 V to 44 V.

Rev. 0

Document Feedback

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

Technical Support

www.analog.com

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ADG5249FBRUZ-RL7 替代型号

型号	品牌	替代类型	描述	数据表
ADG5249FBRUZ	ADI	完全替代	User Defined Fault Protection and Detection, 0.8 pC QINJ, 8-1/Dual 4-1 Multiplexers

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