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DAC8550
SLAS476C–MARCH 2006–REVISED MARCH 2006
16-BIT, ULTRA-LOW GLITCH, VOLTAGE OUTPUT
DIGITAL-TO-ANALOG CONVERTER
FEATURES
DESCRIPTION
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Relative Accuracy: 8 LSB (Max)
The DAC8550 is a small, low-power, voltage output,
16-bit digital-to-analog converter (DAC). It is
monotonic, provides good linearity, and minimizes
undesired code to code transient voltages. The
DAC8550 uses a versatile 3-wire serial interface that
operates at clock rates of up to 30 MHz and is
Glitch Energy: 0.1 nV-s
Settling Time: 10 µs to ±0.003% FSR
Power Supply: +2.7 V to +5.5 V
16-Bit Monotonic Over Temperature
MicroPower Operation: 200 µA at 5 V
Rail-to-Rail Output Amplifier
Power-On Reset to Midscale
Power-Down Capability
compatible
with
standard
SPI™,
QSPI™,
Microwire™, and digital signal processor (DSP)
interfaces.
The DAC8550 requires an external reference voltage
to set its output range. The DAC8550 incorporates a
power-on reset circuit that ensures that the DAC
output powers up at midscale and remain there until a
valid write takes place to the device. The DAC8550
contains a power-down feature, accessed over the
serial interface, that reduces the current consumption
of the device to 200 nA at 5 V.
Schmitt-Triggered Digital Inputs
SYNC Interrupt Facility
2's Complement Input and Reset to Midscale
Operating Temperature Range: -40°C to 105°C
Available Packages:
– 3 mm × 5 mm MSOP-8
The low-power consumption of this device in normal
operation makes it ideal for portable battery-operated
equipment. Power consumption is 1 mW at 5 V,
reducing to 1 µW in power-down mode.
APPLICATIONS
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Process Control
The DAC8550 is available in a MSOP-8 package.
Data Acquisition Systems
Closed-Loop Servo-Control
PC Peripherals
Portable Instrumentation
Programmable Attenuation
Also see the DAC8551 binary coded counterpart of
the DAC8550.
FUNCTIONAL BLOCK DIAGRAM
VDD
VFB
VREF
Ref (+)
16−Bit DAC
VOUT
16
DAC Register
16
SYNC
Resistor
Network
Shift Register
PWB Control
SCLK
DIN
GND
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.
Microwire is a trademark of National Semiconductor.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006, Texas Instruments Incorporated