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1FEATURES

2? 2.7-V to 5.5-V Single Supply

? 12-Bit Linearity and Monotonicity

? Rail-to-Rail Voltage Output

? Settling Time: 5 μs (Max)

? Ultralow Glitch Energy: 0.1 nVs

? Ultralow Crosstalk: –100 dB

? Low Power: 440 μA (Max)

? Per-Channel Power Down: 2 μA (Max)

? Power-On Reset to Zero Scale

? SPI-Compatible Serial Interface: Up to 50 MHz

? Daisy-Chain Capability

? Asynchronous Hardware Clear

? Simultaneous or Sequential Update

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

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

APPLICATIONS

? Portable Battery-Powered Instruments

? Digital Gain and Offset Adjustment

? Programmable Voltage and Current Sources

? Programmable Attenuators

? Industrial Process Control

DESCRIPTION

The DAC7552 is a 12-bit, dual-channel,

voltage-output DAC with exceptional linearity and

monotonicity. Its proprietary architecture minimizes

undesired transients such as code-to-code glitch and

channel-to-channel crosstalk. The low-power

DAC7552 operates from a single 2.7-V to 5.5-V

supply. The DAC7552 output amplifiers can drive a

2-kΩ, 200-pF load rail-to-rail with 5-μs settling time; the output range is set using an external voltage

reference.

The 3-wire serial interface operates at clock rates up

to 50 MHz and is compatible with SPI, QSPI,

Microwire?, and DSP interface standards. The

outputs of all DACs may be updated simultaneously

or sequentially. The parts incorporate a

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

power up to zero volts and remain there until a valid

write cycle to the device takes place. The parts

contain a power-down feature that reduces the

current consumption of the device to under 2 μA.

The small size and low-power operation makes the

DAC7552 ideally suited for battery-operated portable

applications. The power consumption is typically

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

in power-down mode.

The DAC7552 is available in a 16-lead QFN package

and is specified over –40°C to 105°C.