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FEATURES

· Relative Accuracy (INL): ±0.35LSB

· Ultra-Low Glitch Energy: 0.1nV-s

· Low Power Operation: 100mA at 2.7V

· Power-On Reset to Zero Scale

· Power Supply: 2.7V to 5.5V Single Supply

· Power-Down: 0.05mA at 2.7V

· 12-Bit Linearity and Monotonicity

· Rail-to-Rail Voltage Output

· Settling Time: 5ms (Max)

· SPI-Compatible Serial Interface with

Schmitt-Trigger Input: Up to 50MHz

· Daisy-Chain Capability

· Asynchronous Hardware Clear to Zero Scale

· Specified Temperature Range:

– 40°C to +105°C

· Small, 2 x 3 mm, 12-Lead SON Package

APPLICATIONS

· Portable, Battery-Powered Instruments

· Digital Gain and Offset Adjustment

· Programmable Voltage and Current Sources

· Programmable Attenuators

· Industrial Process Control

DESCRIPTION

The DAC7551 is a single-channel, voltage-output

digital-to-analog converter (DAC) with exceptional

linearity and monotonicity, and a proprietary

architecture that minimizes glitch energy. The

low-power DAC7551 operates from a single 2.7V to

5.5V supply. The DAC7551 output amplifiers can

drive a 2kW, 200pF load rail-to-rail with 5ms settling

time; the output range is set using an external

voltage reference.

The 3-wire serial interface operates at clock rates up

to 50MHz and is compatible with SPI?, QSPI?,

Microwire?, and DSP interface standards. The parts

incorporate a power-on-reset circuit to ensure that

the DAC output powers up to 0V and remains there

until a valid write cycle to the device takes place. The

part contains a power-down feature that reduces the

current consumption of the device to under 2mA.

Small size and low-power operation make the

DAC7551 ideally suited for battery-operated, portable

applications. The power consumption is typically

0.5mW at 5V, 0.23mW at 3V, and reduces to 1mW in

power-down mode.

The DAC7551 is available in a 12-lead SON

package and is specified over –40°C to +105°C.