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FEATURES

· Relative Accuracy: 4LSB

· Glitch Energy: 0.15nV-s

· MicroPower Operation:

150mA per channel at 2.7V

· Power-On Reset to Zero-Scale

· Power Supply: +2.7V to +5.5V

· 16-Bit Monotonic Over Temperature

· Settling Time: 10ms to ±0.003% FSR

· Ultra-Low AC Crosstalk: –100dB Typ

· Low Power SPI? Compatible Serial Interface

with Schmitt-Triggered Inputs: Up to 50MHz

· 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

· 1.8V to 5.5V Logic Compatibility

· Available in a TSSOP-16 Package

APPLICATIONS

· Portable Instrumentation

· Closed-Loop Servo-Control

· Process Control

· Data Acquisition Systems

· Programmable Attenuation

· PC Peripherals

DESCRIPTION

The DAC8554 is a 16-bit, quad-channel, voltage

output, digital-to-analog converter (DAC), offering

low-power operation and a flexible serial host

interface. It offers monotonicity, good linearity, and exceptionally low glitch. 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 50MHz for IOVDD = 5V.

The DAC8554 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 DAC8554 provides a per channel

power-down feature, accessed over the serial

interface, that reduces the current consumption to

175nA 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 4.25mW at

5V, reducing to 4mW in power-down mode.

The DAC8554 is available in a TSSOP-16 package

with a specified operating temperature range of

–40°C to +105°C.