BurrBrown Products

from Texas Instruments

DAC7821

FEATURES

DESCRIPTION

APPLICATIONS

DACRegister

Power-On

Reset

Control

Logic

DAC7821

R

R

FB

V

REF

V

DD

I

1

OUT

I

2

OUT

GND

DB0

DB11

12-Bit

R-2RDAC

InputLatch

ParallelBus

CS

R/W

DAC7821

SBAS365B – OCTOBER 2005 – REVISED JULY 2007

12-Bit, Parallel Input, Multiplying

Digital-to-Analog Converter

• 2.5V to 5.5V Supply Operation

The DAC7821 is a CMOS 12-bit current output

digital-to-analog

converter

(DAC).

This

device

• Fast Parallel Interface:

operates from a single 2.5V to 5.5V power supply,

17ns Write Cycle

making it suitable for battery-powered and many

• Update Rate of 20.4MSPS

other applications.

• 10MHz Multiplying Bandwidth

This DAC operates with a fast parallel interface. Data

• ±10V Reference Input

readback allows the user to read the contents of the

• Low Glitch Energy: 5nV-s

DAC register via the DB pins. On power-up, the

internal register and latches are filled with zeroes

• Extended Temperature Range:

and the DAC outputs are at zero scale.

–40

°C to +125°C

The

DAC7821

offers

excellent

4-quadrant

• 20-Lead TSSOP Packages

multiplication characteristics, with a large signal

• 12-Bit Monotonic

multiplying

bandwidth

of

10MHz.

The

applied

• ±1LSB INL

external reference input voltage (VREF) determines

• 4-Quadrant Multiplication

the full-scale output current. An integrated feedback

resistor (RFB) provides temperature tracking and

• Power-On Reset with Brownout Detection

full-scale voltage output when combined with an

• Readback Function

external current-to-voltage precision amplifier.

• Industry-Standard Pin Configuration

The DAC7821 is available in a 20-lead TSSOP

package.

• Portable Battery-Powered Instruments

• Waveform Generators

• Analog Processing

• Programmable Amplifiers and Attenuators

• Digitally-Controlled Calibration

• Programmable Filters and Oscillators

• Composite Video

• Ultrasound

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.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2005–2007, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.