FEATURES

· Relative Accuracy: 4LSB

· Glitch Energy: 0.15nV-s

· MicroPower Operation:

150mA per Channel at 2.7V

· Power-On Reset to Zero-Scale or Midscale

· 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

· Binary and 2's Complement Capability

· Asynchronous Clear to Zero-Scale and

Midscale

· 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 DAC8555 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 DAC8555 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 can be programmed to ensure that the

DAC outputs power up at zero-scale or midscale and

remain there until a valid write takes place. The

device also has the capability to function in both

binary and 2's complement mode. The DAC8555

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 batteryoperated

equipment and other low-power

applications. The power consumption is 5mW at 5V,

reducing to 4mW in power-down mode.

The DAC8555 is available in a TSSOP-16 package

with a specified operating temperature range of

–40°C to +105°C.