1 Features

1? 16-Bit Monotonic Over Temperature

? MicroPower Operation: 500 μA at 5 V

? Power-On Reset to Zero-Scale

? Power Supply: 2.7 V to 5.5 V

? Settling Time: 10 μs to ±0.003% FSR

? Ultra-Low AC Crosstalk: –100 dB Typ

? Low-Power Serial Interface With

Schmitt-Triggered Inputs

? On-Chip Output Buffer Amplifier With Rail-to-Rail

Operation

? Double-Buffered Input Architecture

? Simultaneous or Sequential Output Update

and Powerdown

? Available in a Tiny VSSOP-8 Package

2 Applications

? Portable Instrumentation

? Closed-Loop Servo Control

? Process Control

? Data Acquisition Systems

? Programmable Attenuation

? PC Peripherals

3 Description

The DAC8532 is a dual 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 2.7 V

to 5.5 V. The device supports a standard 3-wire serial interface capable of operating with input data clock

frequencies up to 30 MHz for VDD = 5 V.

The DAC8532 requires an external reference voltage

to set the output range of each DAC channel. The

device incorporates 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

DAC8532 provides a flexible power-down feature, accessible over the serial interface, that reduces the

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

The low-power consumption of the device in normal

operation makes it ideally suited to portable battery- operated equipment and other low-power

applications. The power consumption is 2.5 mW at

5 V, reducing to 1 μW in power-down mode.

The DAC8532 is available in a VSSOP-8 package

with a specified operating temperature range of

–40°C to 105°C.