1

®

DAC8043

DAC8043

®

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111

Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

DAC8043

FEATURES

q 12-BIT ACCURACY IN 8-PIN SOIC

q FAST 3-WIRE SERIAL INTERFACE

q LOW INL AND DNL:

q GAIN ACCURACY TO

q LOW GAIN TEMPCO: 5ppm/

q OPERATES WITH +5V SUPPLY

q TTL/CMOS COMPATIBLE

q ESD PROTECTED

CMOS 12-Bit Serial Input Multiplying

DIGITAL-TO-ANALOG CONVERTER

APPLICATIONS

q AUTOMATIC CALIBRATION

q MOTION CONTROL

q MICROPROCESSOR CONTROL SYSTEMS

q PROGRAMMABLE AMPLIFIER/

ATTENUATORS

q DIGITALLY CONTROLLED FILTERS

DESCRIPTION

The DAC8043 is a 12-bit current output multiplying

digital-to-analog converter (DAC) that is packaged in a

space-saving, surface-mount 8-pin SOIC. Its 3-wire se-

rial interface saves additional circuit board space which

results in low power dissipation. When used with micro-

processors having a serial port, the DAC8043 minimizes

the digital noise feedthrough from its input to output.

The serial port can be used as a dedicated analog bus and

kept inactive while the DAC8043 is in use. Serial inter-

facing reduces the complexity of opto or transformer

isolation applications.

The DAC8043 contains a 12-bit serial-in, parallel-out

shift register, a 12-bit DAC register, a 12-bit CMOS

DAC, and control logic. Serial input (SRI) data is clocked

into the input register on the rising edge of the clock

(CLK) pulse. When the new data word had been clocked

in, it is loaded into the DAC register by taking the LD

input low. Data in the DAC register is converted to an

output current by the D/A converter.

The DAC8043 operates from a single +5V power supply

which makes the DAC8043 an ideal low power, small

size, high performance solution for several applications.

12-Bit

D/A

Converter

12-Bit

DAC Register

12-Bit Input

Shift Register

12

12

V

REF

LD

CLK

SRI

R

FB

I

OUT

V

DD

GND

1

5

7

6

2

3

8

4

R

FB

PDS-1197B

Printed in U.S.A. March, 1998

SBAS028