FEATURES

· 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 Midscale

· 2s Complement Input Data Format

· 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 DAC7553 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

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

supply. The DAC7553 output amplifiers can drive a

2-kW, 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 at midscale 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

DAC7553 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 DAC7553 is available in a 16-lead QFN package

and is specified over –40°C to 105°C.