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.