MP7523KN 查看數據表（PDF） - Exar Corporation

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MP7523KN

15 V CMOS Multiplying 8-Bit Digital-to-Analog Converter

Exar Corporation 

...the analog plus companyTM

MP7523/XRD7523

15 V CMOS

Multiplying 8-Bit

Digital-to-Analog Converter

FEATURES

• Full Four-Quadrant Multiplying

• Low Feedthrough: 1/2 LSB @ 200 kHz

• Fast Settling: 100 ns (typ.)

• Low Power Dissipation

• Low Cost

• 5 V/15 V Operation

• Buffered Version: MP7524/XRD7524

APPLICATIONS

January 1996-2

• Battery Operated Equipment

• Low Power, Ratiometric A/D Converters

• Digitally Controlled Gain Circuits

• Digitally Controlled Attenuators

• CRT Character Generation

• Low Noise Audio Gain Control

GENERAL DESCRIPTION

The MP7523/XRD7523 is a low cost multiplying Digital-to-

Analog Converter. The device uses an advanced thin-film-on-

CMOS technology to provide 8-bit resolution with accuracy to

10-bits and very low power dissipation.

The MP7523/XRD7523’s excellent multiplying characteris-

tics and low cost allow it to be used in a wide ranging field of ap-

plications such as: low noise audio gain control, CRT character

generation, motor speed control, digitally controlled attenuators,

etc.

SIMPLIFIED BLOCK DIAGRAM

VDD

2R

2R

2R

VREF

RFB

4R

4R

4R

4R

4R

4R 4R

R

2 to 3 Decoder

Switch Drivers & Switches

R = 10k

BIT 1

MSB

BIT 8

LSB

3 Segment D/A Converter with Termination to DGND

Logical “1” at Digital Input Steers Current to IOUT1

IOUT1

IOUT2

Rev. 3.00

E1996

EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 z (510) 668-7000 z (510) 668-7010

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