3 mm x 3 mm

Actual Size

www.ti.com

FEATURES

DESCRIPTION

APPLICATIONS

_

+

Interface

Logic

Input

Register

DAC

Register

String

DAC A

Power-Down

Logic

Power-On

Reset

GND

CLR

DCEN

SDIN

SYNC

SCLK

_

+

Input

Register

DAC

Register

String

DAC B

PD

SDO

FUNCTIONAL BLOCK DIAGRAM

DAC7553

DAC7553

SLAS477 – SEPTEMBER 2005

12-BIT, DUAL, ULTRALOW GLITCH, VOLTAGE OUTPUT

DIGITAL-TO-ANALOG CONVERTER

•

2.7-V to 5.5-V Single Supply

The

DAC7553

is

a

12-bit,

dual-channel,

voltage-output DAC with exceptional linearity and

•

12-Bit Linearity and Monotonicity

monotonicity. Its proprietary architecture minimizes

•

Rail-to-Rail Voltage Output

undesired transients such as code-to-code glitch and

•

Settling Time: 5 µs (Max)

channel-to-channel

crosstalk.

The

low-power

•

Ultralow Glitch Energy: 0.1 nVs

DAC7553 operates from a single 2.7-V to 5.5-V

supply. The DAC7553 output amplifiers can drive a

•

Ultralow Crosstalk: –100 dB

2-k

Ω, 200-pF load rail-to-rail with 5-µs settling time;

•

Low Power: 440 µA (Max)

the output range is set using an external voltage

•

Per-Channel Power Down: 2 µA (Max)

reference.

•

Power-On Reset to Midscale

The 3-wire serial interface operates at clock rates up

•

2s Complement Input Data Format

to 50 MHz and is compatible with SPI, QSPI,

Microwire™, and DSP interface standards. The

•

SPI-Compatible Serial Interface: Up to 50 MHz

outputs of all DACs may be updated simultaneously

•

Daisy-Chain Capability

or

sequentially.

The

parts

incorporate

a

•

Asynchronous Hardware Clear

power-on-reset circuit to ensure that the DAC outputs

power up at midscale and remain there until a valid

•

Simultaneous or Sequential Update

write cycle to the device takes place. The parts

•

Specified Temperature Range: –40°C to 105°C

contain a power-down feature that reduces the

•

Small 3-mm × 3-mm, 16-Lead QFN Package

current consumption of the device to under 2 µA.

The small size and low-power operation makes the

DAC7553 ideally suited for battery-operated portable

•

Portable Battery-Powered Instruments

applications. The power consumption is typically

•

Digital Gain and Offset Adjustment

1.5 mW at 5 V, 0.75 mW at 3 V, and reduces to 1 µW

in power-down mode.

•

Programmable Voltage and Current Sources

•

Programmable Attenuators

The DAC7553 is available in a 16-lead QFN package

and is specified over –40°C to 105°C.

•

Industrial Process Control

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.

Microwire is a trademark of National Semiconductor Corp..

PRODUCTION DATA information is current as of publication date.

Copyright © 2005, 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.