BurrBrown Products

from Texas Instruments

DAC7822

FEATURES

DESCRIPTION

APPLICATIONS

12-Bit

R-2RDACA

12-Bit

R-2RDACB

LATCH

R A

FB

I

1A

OUT

I

2A

OUT

I

1B

OUT

DAC /B

A

CS

R/W

V

DD

DB0

DATA

INPUTS

DB11

LDAC

CLR

I

2B

OUT

LATCH

INPUT

BUFFER

CONTROL

LOGIC

R

1

2R

R

FB

2R

R

3

2R

R A

3

R

A

2_3

R A

2

V

A

REF

R A

1

R

2

2R

R

3

2R

R

2

2R

GND

POWER-ON

RESET

R B

3

R

B

2_3

R B

2

V

B

REF

R B

1

R

FBB

R

1

2R

R

FB

2R

DAC7822

SBAS374A – JUNE 2006 – REVISED JULY 2007

Dual, 12-Bit, Parallel Input, Multiplying

Digital-to-Analog Converter

• ±1LSB INL

The DAC7822 is a dual, CMOS, 12-bit, current

output digital-to-analog converter (DAC). This device

• 2.5V to 5.5V Supply Operation

operates from a 2.5V to 5.5V power supply, making it

• Fast Parallel Interface:

suitable

for

battery-powered

and

many

other

17ns Write Cycle

applications.

• Update Rate of 20.4MSPS

The DAC7822 operates with a fast parallel interface.

• 10MHz Multiplying Bandwidth

Data readback allows the user to read the contents

• ±15V Reference Input

of the 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

DAC7822

offers

excellent

4-quadrant

• 40-Lead QFN

multiplication

characteristics,

with

large

signal

• 12-Bit Monotonic

multiplying

bandwidth

of

10MHz.

The

applied

• 4-Quadrant Multiplication

external reference input voltage (VREF) determines

• Power-On Reset with Brownout Detection

the full-scale output current. An integrated feedback

resistor (RFB) provides temperature tracking and

• Readback Function

full-scale voltage output when combined with an

• Industry-Standard Pin Configuration

external current-to-voltage precision amplifier. The

• Pin-Compatible with the AD5405

DAC7822 also includes the resistors necessary for

4-quadrant multiplication and other configuration

modes.

• Portable Battery-Powered Instruments

The DAC7822 is available in a 40-lead QFN

• Waveform Generators

package.

• Analog Processing

• Programmable Amplifiers and Attenuators

• Digitally-Controlled Calibration

• Programmable Filters and Oscillators

• 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 © 2006–2007, 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.