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FEATURES

POWER SUPPLY: +2.7V to +5.5V

microPOWER OPERATION: 950μA at 5V

16-BIT MONOTONIC OVER TEMPERATURE

SETTLING TIME: 10μs to ±0.003% FSR

ULTRA-LOW AC CROSSTALK: –100dB typ

POWER-ON RESET TO ZERO-SCALE

ON-CHIP OUTPUT BUFFER AMPLIFIER WITH

RAIL-TO-RAIL OPERATION

DOUBLE BUFFERED INPUT ARCHITECTURE

SIMULTANEOUS OR SEQUENTIAL OUTPUT

UPDATE AND POWER-DOWN

16 CHANNEL BROADCAST CAPABILITY

SCHMITT-TRIGGERED INPUTS

TSSOP-16 PACKAGE

APPLICATIONS

PORTABLE INSTRUMENTATION

CLOSED-LOOP SERVO-CONTROL

PROCESS CONTROL

DATA ACQUISITION SYSTEMS

PROGRAMMABLE ATTENUATION

PC PERIPHERALS

DESCRIPTION

The DAC8534 is a quad channel, 16-bit Digital-to-Analog

Converter (DAC) offering low-power operation and a flexible

serial host interface. Each on-chip precision output amplifier

allows rail-to-rail output swing to be achieved over the supply

range of 2.7V to 5.5V. The device supports a standard 3-wire

serial interface capable of operating with input data clock

frequencies up to 30MHz for IOVDD = 5V.

The DAC8534 requires an external reference voltage to set

the output range of each DAC channel. Also incorporated

into the device is a power-on reset circuit which ensures that

the DAC outputs power up at zero-scale and remain there

until a valid write takes place. The DAC8534 provides a per

channel power-down feature, accessed over the serial interface,

that reduces the current consumption to 200nA per

channel at 5V.

The low-power consumption of this device in normal operation

makes it ideally suited to portable battery-operated

equipment and other low-power applications. The power

consumption is 5mW at 5V, reducing to 4μW in power-down

mode.

The DAC8534 is available in a TSSOP-16 package with a

specified operating temperature range of –40°C to +105°C.