16-Bit, Single Channel

DIGITAL-TO-ANALOG CONVERTER

With Internal Reference and Parallel Interface

DAC7741

SBAS248B – DECEMBER 2001 – REVISED AUGUST 2007

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Copyright © 2001-2007, Texas Instruments Incorporated

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

DAC7

741

Buffer

+10V

Reference

Control

Logic

Input

Register

I/O

Buffer

DAC

Register

DAC

REFEN

CS

R/W

RSTSEL

Data I/O

V

DD

V

REF

V

SS VCC

REFADJ

REF

OUT

REF

IN

R

OFFSET

RFB2

RFB1

SJ

V

OUT

AGND

DGND

LDAC

RST

16

DESCRIPTION

The DAC7741 is a 16-bit Digital-to-Analog Converter (DAC)

which provides 16 bits of monotonic performance over the

specified operating temperature range and offers a +10V,

low-drift internal reference. Designed for automatic test equip-

ment and industrial process control applications, the DAC7741

output swing can be configured in a

±10V, ±5V, or +10V

range. The flexibility of the output configuration allows the

DAC7741 to provide both unipolar and bipolar operation by

pin strapping. The DAC7741 includes a high-speed output

amplifier with a maximum settling time of 5

µs to ±0.003%

FSR for a 20V full-scale change and only consumes 100mW

(typical) of power.

The DAC7741 features a standard 16-bit parallel interface with

double buffering to allow asynchronous updates of the analog

output and data read-back to support data integrity verification

prior to an update. A user-programmable reset control allows

the DAC output to reset to min-scale (0000H) or mid-scale

(8000H) overriding the DAC register values. The DAC7741 is

available in a LQFP-48 package and four performance grades

specified to operate from 0

°C to +70°C and –40°C to +85°C.

FEATURES

q LOW POWER: 150mW MAXIMUM

q +10V INTERNAL REFERENCE

q UNIPOLAR OR BIPOLAR OPERATION

q SETTLING TIME: 5

µs to ±0.003% FSR

q 16-BIT MONOTONICITY, –40

°C TO +85°C

q

±10V, ±5V OR +10V CONFIGURABLE VOLTAGE

OUTPUT

q RESET TO MIN-SCALE OR MID-SCALE

q DOUBLE-BUFFERED DATA INPUT

q INPUT REGISTER DATA READBACK

q SMALL LQFP-48 PACKAGE

APPLICATIONS

q PROCESS CONTROL

q ATE PIN ELECTRONICS

q CLOSED-LOOP SERVO CONTROL

q MOTOR CONTROL

q DATA ACQUISITION SYSTEMS

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

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