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.