ADG731BSUZ Datasheet ADG731BSUZ, ADG725BSUZ, ADG731BCPZ | P1-P3

ADG725/ADG731

16-/32-Channel, Serially Controlled 4 

1.8 V to 5.5 V, 2.5 V, Analog Multiplexers

FEATURES

3-Wire SPI Compatible Serial Interface

1.8 V to 5.5 V Single Supply

2.5 V Dual-Supply Operation

4  On Resistance

0.5  On Resistance Flatness

7 mm x 7 mm 48-Lead Chip Scale Package (LFCSP)

or 48-Lead TQFP Package

Rail-to-Rail Operation

Power-On Reset

42 ns Switching Times

Single 32-to-1 Channel Multiplexer

Dual/Differential 16-to-1 Channel Multiplexer

TTL/CMOS Compatible Inputs

For Functionally Equivalent Devices with Parallel

Interface, See ADG726/ADG732

APPLICATIONS

Optical Applications

Data Acquisition Systems

Communication Systems

Relay Replacement

Audio and Video Switching

Battery-Powered Systems

Medical Instrumentation

Automatic Test Equipment

FUNCTIONAL BLOCK DIAGRAM

S32

ADG731

INPUT SHIFT

S1A

S16A

S1B

S16B

ADG725

INPUT SHIFT

SCLK

DIN

SYNC

SCLK DIN

SYNC

GENERAL DESCRIPTION

The ADG731/ADG725 are monolithic, CMOS, 32-channel/

dual 16-channel analog multiplexers with a serially controlled

3-wire interface. The ADG731 switches one of 32 inputs

(S1–S32) to a common output, D. The ADG725 can be config-

ured as a dual mux switching one of 16 inputs to one output, or a

differential mux switching one of 16 inputs to a differential output.

These mulitplexers utilize a 3-wire serial interface that is com-

patible with SPI

, QSPI

™

, MICROWIRE

™

, and some DSP

interface standards. On power-up, the Internal Shift Register

contains all zeros and all switches are in the OFF state.

These multiplexers are designed on an enhanced submicron

process that provides low power dissipation yet gives high switch-

ing speed with very low on resistance and leakage currents.

They operate from a single supply of 1.8 V to 5.5 V or a

± 2.5 V dual supply, making them ideally suited to a variety of

applications. On resistance is in the region of a few ohms, is

closely matched between switches, and is very flat over the full

signal range.

These parts can operate equally well as either multiplexers or

demultiplexers and have an input signal range that extends to the

supplies. In the OFF condition, signal levels up to the supplies

are blocked. All channels exhibit break-before-make switching

action, preventing momentary shorting when switching channels.

The ADG731 and ADG725 are serially controlled 32-channel,

and dual/differential 16-channel multiplexers, respectively. They

are available in either a 48-lead LFCSP or TQFP package.

PRODUCT HIGHLIGHTS

1. 3-Wire Serial Interface.

2. 1.8 V to 5.5 V Single-Supply or ± 2.5 V Dual-Supply

Operation. These parts are specified and guaranteed

with 5 V ± 10%, 3 V ± 10% single-supply,

and ± 2.5 V ± 10% dual-supply rails.

3. On Resistance of 4 W.

4. Guaranteed Break-Before-Make Switching Action.

5. 7 mm ¥ 7 mm 48-Lead Chip Scale Package (LFCSP) or

48-Lead TQFP Package.

Rev. B 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

registered trademarks are the property of their respective owners.

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

Technical Support www.analog.com

–2–

ADG725/ADG731–SPECIFICATIONS

= 5 V ± 10%, V

= 0 V, GND = 0 V, unless otherwise noted.)

B Version

Parameter +25⬚C –40⬚C to +85⬚C Unit Test Conditions/Comments

ANALOG SWITCH

Analog Signal Range 0 to V

On Resistance (R

)4 Ω typ V

= 0 V to V

, I

= 10 mA;

5.56 Ω max Test Circuit 1

On Resistance Match between 0.3 Ω typ V

= 0 V to V

, I

= 10 mA

Channels (ΔR

)0.8 Ω max

On Resistance Flatness (R

FLAT(ON)

)0.5 Ω typ V

= 0 V to V

, I

= 10 mA

1 Ω max

LEAKAGE CURRENTS V

= 5.5 V

Source OFF Leakage I

(OFF) ± 0.01 nA typ V

= 4.5 V/1 V, V

= 1 V/4.5 V;

± 0.25 ± 1 nA max Test Circuit 2

Drain OFF Leakage I

(OFF) ± 0.05 nA typ V

= 4.5 V/1 V, V

= 1 V/4.5 V;

ADG725 ± 0.5 ± 2.5 nA max Test Circuit 3

ADG731 ± 1 ± 5 nA max

Channel ON Leakage I

, I

(ON) ±0.05 nA typ V

= V

= 1 V or 4.5 V;

ADG725 ± 0.5 ± 2.5 nA max Test Circuit 4

ADG731 ± 1 ± 5 nA max

DIGITAL INPUTS

Input High Voltage, V

INH

2.4V min

Input Low Voltage, V

INL

0.8 V max

Input Current

INL

or I

INH

0.005 μA typ V

= V

INL

or V

INH

± 0.5 μA max

, Digital Input Capacitance 5 pF typ

DYNAMIC CHARACTERISTICS

TRANSITION

42 ns typ R

= 300 Ω, C

= 35 pF; Test Circuit 5

53 62 ns max V

= 3 V/0 V, V

S32

= 0 V/3 V

Break-Before-Make Time Delay, t

30 ns typ R

= 300 Ω, C

= 35 pF

1 ns minV

= 3 V; Test Circuit 6

Charge Injection 5 pC typ V

= 2.5 V, R

= 0 Ω, C

= 1 nF;

Test Circuit 7

Off Isolation –72 dB typ R

= 50 Ω, C

= 5 pF, f = 1 MHz;

Test Circuit 8

Channel-to-Channel Crosstalk –72 dB typ R

= 50 Ω, C

= 5 pF, f = 1 MHz;

Test Circuit 9

–3 dB Bandwidth

ADG725 34 MHz typ R

= 50 Ω, C

= 5 pF; Test Circuit 10

ADG731 18 MHz typ

(OFF) 15 pF typ f = 1 MHz

(OFF)

ADG725 170 pF typ f = 1 MHz

ADG731 340 pF typ f = 1 MHz

, C

(ON)

ADG725 175 pF typ f = 1 MHz

ADG731 350 pF typ f = 1 MHz

POWER REQUIREMENTS V

= 5.5 V

10 μA typ Digi tal Inputs = 0 V or 5.5 V

20 μA max

NOTES

Temperature range is as follows: B Version: –40°C to +85°C.

Guaranteed by design, not subject to production test.

Specifications subject to change without notice.

REV. B

ADG725/ADG731

–3–

SPECIFICATIONS

= 3 V  10%, V

= 0 V, GND = 0 V, unless otherwise noted.)

B Version

Parameter +25⬚C –40⬚C to +85⬚C Unit Test Conditions/Comments

ANALOG SWITCH

Analog Signal Range 0 to V

On Resistance (R

)7 Ω typ V

= 0 V to V

, I

= 10 mA;

11 12 Ω max Test Circuit 1

On Resistance Match between 0.35 Ω typ V

= 0 V to V

, I

= 10 mA

Channels (ΔR

)1Ω max

On Resistance Flatness (R

FLAT(ON)

)3Ω max V

= 0 V to V

, I

= 10 mA

LEAKAGE CURRENTS V

= 3.3 V

Source OFF Leakage I

(OFF) ± 0.01 nA typ V

= 3 V/1 V, V

= 1 V/3 V;

± 0.25 ± 1 nA max Test Circuit 2

Drain OFF Leakage I

(OFF) ± 0.05 nA typ V

= 1 V/3 V, V

= 3 V/1 V;

ADG725 ± 0.5 ± 2.5 nA max Test Circuit 3

ADG731 ± 1 ± 5 nA max

Channel ON Leakage I

, I

(ON) ±0.05 nA typ V

= V

= 1 V or 3 V;

ADG725 ± 0.5 ± 2.5 nA max Test Circuit 4

ADG731 ± 1 ± 5 nA max

DIGITAL INPUTS

Input High Voltage, V

INH

2.0V min

Input Low Voltage, V

INL

0.7 V max

Input Current

INL

or I

INH

0.005 μA typ V

= V

INL

or V

INH

± 0.5 μA max

, Digital Input Capacitance 5 pF typ

DYNAMIC CHARACTERISTICS

TRANSITION

60 ns typ R

= 300 Ω, C

= 35 pF; Test Circuit 5

80 90 ns max V

= 2 V/0 V, V

S32

= 0 V/2 V

Break-Before-Make Time Delay, t

30 ns typ R

= 300 Ω, C

= 35 pF

1 ns minV

= 2 V; Test Circuit 6

Charge Injection 1 pC typ V

= 0 V, R

= 0 Ω, C

= 1 nF;

Test Circuit 7

Off Isolation –72 dB typ R

= 50 Ω, C

= 5 pF, f = 1 MHz;

Test Circuit 8

Channel-to-Channel Crosstalk –72 dB typ R

= 50 Ω, C

= 5 pF, f = 1 MHz;

Test Circuit 9

–3 dB Bandwidth

ADG725 34 MHz typ R

= 50 Ω, C

= 5 pF; Test Circuit 10

ADG731 18 MHz typ

(OFF) 15 pF typ f = 1 MHz

(OFF)

ADG725 170 pF typ f = 1 MHz

ADG731 340 pF typ f = 1 MHz

, C

(ON)

ADG725 175 pF typ f = 1 MHz

ADG731 350 pF typ f = 1 MHz

POWER REQUIREMENTS V

= 3.3 V

5 μA typ Digital Inputs = 0 V or 3.3 V

10 μA max

NOTES

Temperature range is as follows: B Version: –40°C to +85°C.

Guaranteed by design, not subject to production test.

Specifications subject to change without notice.

REV. B

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P17

ADG731BSUZ

Mfr. #:

Buy ADG731BSUZ

Manufacturer:

Analog Devices Inc.

Description:

Multiplexer Switch ICs 32:1 18MHz 4 Ohm Serially Controlled

Lifecycle:

New from this manufacturer.

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ADG731BSUZ

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