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.