FEATURES

microPower OPERATION: 250μA at 5V

POWER-ON RESET TO ZERO

POWER SUPPLY: +2.7V to +5.5V

ENSURED MONOTONIC BY DESIGN

SETTLING TIME: 10μs to ±0.003 FSR

LOW-POWER SERIAL INTERFACE WITH

SCHMITT-TRIGGERED INPUTS

ON-CHIP OUTPUT BUFFER AMPLIFIER,

RAIL-TO-RAIL OPERATION

SYNC INTERRUPT FACILITY

PACKAGES: MSOP-8 and 3x3 SON-8 (same

size as QFN)

APPLICATIONS

PROCESS CONTROL

DATA ACQUISITION SYSTEMS

CLOSED-LOOP SERVO-CONTROL

PC PERIPHERALS

PORTABLE INSTRUMENTATION

PROGRAMMABLE ATTENUATION

DESCRIPTION

The DAC8531 is a low-power, single, 16-bit buffered voltage

output Digital-to-Analog Converter (DAC). Its on-chip precision

output amplifier allows rail-to-rail output swing to be

achieved. The DAC8531 uses a versatile three-wire serial

interface that operates at clock rates up to 30MHz and is

compatible with standard SPI?, QSPI?, Microwire?, and

Digital Signal Processor (DSP) interfaces.

The DAC8531 requires an external reference voltage to set

the output range of the DAC. The DAC8531 incorporates a

power-on reset circuit that ensures that the DAC output

powers up at 0V and remains there until a valid write takes

place to the device. The DAC8531 contains a power-down

feature, accessed over the serial interface, that reduces the

current consumption of the device to 200nA at 5V.

The low power consumption of this part in normal operation

makes it ideally suited to portable battery-operated equipment.

The power consumption is 2mW at 5V reducing to 1μW

in power-down mode.

The DAC8531 is available in both MSOP-8 and 3x3 SON-8

(same size as QFN) packages.