FEATURES

microPOWER OPERATION: 250μA at 5V

MULTIPLYING-MODE BANDWIDTH: 350kHz

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

MSOP-8 PACKAGE

APPLICATIONS

PROCESS CONTROL

DATA ACQUISITION SYSTEMS

CLOSED-LOOP SERVO-CONTROL

PC PERIPHERALS

PORTABLE INSTRUMENTATION

PROGRAMMABLE ATTENUATION

DESCRIPTION

The DAC8501 is a low-power, single, 16-bit buffered voltage

output Digital-to-Analog Converter (DAC) optimized for multiplying

operation. Its on-chip precision output amplifier allows

rail-to-rail output swing to be achieved. The DAC8501 uses a

versatile 3-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 DAC8501 requires an external reference voltage to set

the output range of the DAC. The DAC8501 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 DAC8501 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 1.2mW at 5V reducing to

1μW in power-down mode.

The DAC8501 is available in an MSOP-8 package.