FEATURES

Single Supply: +2.7 V to +5.5 V

Micropower Operation: 950 μA @ 5 V

Rail-To-Rail Voltage Output

Ultralow Crosstalk: –110 dB

Settling Time: 10 μs To ±0.003% FSR

16-Bit Monotonic

Offset Error: ±0.3 mV

Gain Error: ±1 mV

Total Error: ±3 mV

Per-Channel V REF+, VREF–, VFB Pins

Logic Compatible: +1.8 V to +5.5 V

Readback Capability

Double Buffered Inputs

Simultaneous or Sequential Update

Schmitt-Triggered Digital Inputs

Hardware Reset

48-Lead TQFP Package

APPLICATIONS

Process Control

Data Acquisition Systems

Closed-Loop Servo Control

PC Peripherals

Optical Networking

DESCRIPTION

The DAC8544 is a low-power, quad-channel, 16-bit,

voltage output DAC. Its on-chip precision output

amplifier allows rail-to-rail voltage swing to be

achieved at the output. The DAC8544 is 16-bit

monotonic and offers exceptional absolute accuracy

with ultralow crosstalk. The DAC8544 uses a 16-bit

parallel interface and features additional power-down

function pins as well as hardware-enabled, synchron·

ous DAC updating and reset capability.

The DAC8544 requires an external reference voltage

to set the output range of the DAC. The device

incorporates a power-on-reset circuit that ensures

that the DAC outputs power up at zero volt and

remains there until a valid write takes place. In

addition, the DAC8544 contains a power-down fea·

ture, accessed via PD pin, that reduces the current

consumption of the device to 400 nA at 5 V. The

power consumption is typically under 5 mW at

VDD = 5 V.

The DAC8544 is available in a 48-lead TQFP package

with an operating temperature range of –40°C to

+105°C.