Datasheet
DAC8554
FEATURES DESCRIPTION
APPLICATIONS
Data
BufferA
Buffer
Control
18
8
Power-Down
ControlLogic
Resistor
Network
ENABLE
SYNC
LDAC
DAC
RegisterA
DACA
Data
BufferD
DAC
RegisterD
DACD
Register
Control
24-Bit
Serial-to-Parallel
ShiftRegister
SCLK
D
IN
V L
REF
V H
REF
AV
DD
IOV
DD
V A
OUT
V B
OUT
V C
OUT
V D
OUT
A1A0
DAC8554
SLAS431B – JUNE 2005 – REVISED OCTOBER 2006
16-BIT, QUAD-CHANNEL, ULTRA-LOW GLITCH, VOLTAGE OUTPUT
DIGITAL-TO-ANALOG CONVERTER
• Relative Accuracy: 4LSB
The DAC8554 is a 16-bit, quad-channel, voltage
output, digital-to-analog converter (DAC), offering
• Glitch Energy: 0.15nV-s
low-power operation and a flexible serial host
• MicroPower Operation:
interface. It offers monotonicity, good linearity, and
150 µ A per channel at 2.7V
exceptionally low glitch. Each on-chip precision
• Power-On Reset to Zero-Scale
output amplifier allows rail-to-rail output swing to be
achieved over the supply range of 2.7V to 5.5V. The
• Power Supply: +2.7V to +5.5V
device supports a standard 3-wire serial interface
• 16-Bit Monotonic Over Temperature
capable of operating with input data clock
• Settling Time: 10 µ s to ± 0.003% FSR
frequencies up to 50MHz for IOV
DD
= 5V.
• Ultra-Low AC Crosstalk: –100dB Typ
The DAC8554 requires an external reference voltage
• Low Power SPI™ Compatible Serial Interface
to set the output range of each DAC channel. Also
with Schmitt-Triggered Inputs: Up to 50MHz
incorporated into the device is a power-on reset
circuit which ensures that the DAC outputs power up
• On-Chip Output Buffer Amplifier with
at zero-scale and remain there until a valid write
Rail-to-Rail Operation
takes place. The DAC8554 provides a per channel
• Double Buffered Input Architecture
power-down feature, accessed over the serial
• Simultaneous or Sequential Output Update
interface, that reduces the current consumption to
and Power-Down
175nA per channel at 5V.
• 16-Channel Broadcast Capability
The low-power consumption of this device in normal
operation makes it ideally suited to portable
• 1.8V to 5.5V Logic Compatibility
battery-operated equipment and other low-power
• Available in a TSSOP-16 Package
applications. The power consumption is 4.25mW at
5V, reducing to 4 µ W in power-down mode.
The DAC8554 is available in a TSSOP-16 package
• Portable Instrumentation
with a specified operating temperature range of
• Closed-Loop Servo-Control
–40 ° C to +105 ° C.
• Process Control
FUNCTIONAL BLOCK DIAGRAM
• Data Acquisition Systems
• Programmable Attenuation
• PC Peripherals
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SPI, QSPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor.
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2005–2006, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.