DAC80504 Datasheet, PDF (1/4 Pages) Texas Instruments – Quad, 16-Bit, SPI Voltage Output DAC With Internal Reference

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DAC80504
SBAS874 – AUGUST 2017
DAC80504 Quad, 16-Bit, SPI Voltage Output DAC With Internal Reference
1 Features
•1 Performance
– INL: ±1 LSB Maximum at 16-Bit Resolution
– TUE: ±0.1% of FSR Maximum
• Integrated 2.5-V Precision Internal Reference
– Initial Accuracy: 5 mV, Maximum
– Low Drift: 5 ppm/°C, Typical
• High Drive Capability: 20 mA With 0.5 V From
Supply Rails
• Flexible Output Configuration
– User Selectable Gain: 2, 1 or ½
– Reset to Zero Scale or Midscale
• Wide Operating Range
– Power Supply: 2.7 V to 5.5 V
– Temperature: –40˚C to +125˚C
• 50-MHz, SPI-Compatible Serial Interface
– 4-Wire Mode, 1.7-V to 5.5-V Operation
– Daisy-Chain Operation
– CRC Error Check
• Low Power: 0.7 mA/Channel at 5.5 V
• Small Package: 3-mm × 3-mm, 16-Pin WQFN
2 Applications
• Optical Networking
• Wireless Infrastructure
• Industrial Automation
• Data Acquisition Systems
3 Description
The DAC80504 device is a low-power, four-channel,
buffered voltage-output, digital-to-analog converter
(DAC) with 16-bit resolution. This device includes a
2.5-V, 5-ppm/°C internal reference, eliminating the
need for an external precision reference in most
applications. A user-selectable gain configuration
provides full-scale output voltages of 1.25 V (gain =
½), 2.5 V (gain = 1), or 5 V (gain = 2). This device
operates from a single 2.7-V to 5.5-V supply, is
specified monotonic, and provides high linearity of ±1
LSB INL.
Communication to the DAC80504 is performed
through a 4-wire serial interface that operates at clock
rates of up to 50 MHz. The VIO pin enables serial
interface operation from 1.7 V to 5.5 V. The
DAC80504 flexible interface enables operation with a
wide range of industry-standard microprocessors and
microcontrollers.
The DAC80504 incorporates a power-on-reset circuit
that powers up and maintains the DAC outputs at
either zero scale or midscale until a valid code is
written to the device. This device consumes low
current of 0.7 mA/channel at 5.5 V, making it suitable
for battery-operated equipment. A per-channel power-
down feature reduces the device current consumption
to 15 µA.
The DAC80504 is characterized for operation over
the temperature range of –40°C to +125°C, and is
available in a small, 3-mm × 3-mm, QFN package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DAC80504
WQFN (16)
3.00 mm × 3.00 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
SCLK
SDI
SDO/ALARM
CS
LDAC
Simplified Block Diagram
VIO
REFDIV
VDD
REF
GAIN
Internal
Reference
÷1 or ÷2
GAIN
×1 or ×2
DAC
Buffer
DAC
Register
DAC
BUF
DAC80504
OUT0
Channel 0
Channel 1
Channel 2
Channel 3
OUT1
OUT2
OUT3
Power On Reset
Power Down Logic
Resistive Network
RSTSEL
GND
Copyright © 2017, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. ADVANCE INFORMATION for pre-production products; subject to
change without notice.