DAC80508 Datasheet, PDF (1/8 Pages) Texas Instruments – Octal, 16-, 14-, 12-Bit, SPI, Voltage Output DAC with Internal Reference

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DAC80508, DAC70508, DAC60508
SLASEM5 – JULY 2017
DACx0508 Octal, 16-, 14-, 12-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 Range: –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 DAC80508, DAC70508 and DAC60508 are a
pin-compatible family of low power, eight-channel,
buffered voltage-output digital-to-analog converters
(DACs) with 16-, 14- and 12-bit resolution. These
devices include a 2.5 V, 5 ppm/°C internal reference
and user selectable gain configuration giving full
scale output voltages of 1.25 V (gain = ½), 2.5 V
(gain = 1) or 5 V (gain = 2). The device operates from
a single 2.7 V to 5.5 V supply, is ensured monotonic
and provides high linearity of ±1 LSB INL.
Communication to the DACx0508 is done through a
4-wire serial interface that operates at clock rates up
to 50 MHz. The V_IO pin enables serial interface
operation from 1.7 V to 5.5 V. The DACx0508 flexible
interface enables operation with a wide range of
industry standard microprocessors and
microcontrollers.
The DACx0508 incorporates a power-on-reset circuit
that ensures the DAC outputs power up and remain
at either zero scale or midscale until a valid code is
written to the device. The device consumes low
current of 0.7 mA/channel at 5.5 V. A per-channel
power-down feature reduces the device current
consumption to 15 µA.
The DACx0508 is characterized for operation over
the temperature range of –40°C to 125°C and is
available in small 3 mm × 3 mm QFN package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DACx0508
WQFN (16)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Block Diagram
VIO
VDD
REF
+1 OR +2
INTERNAL
REFERENCE
SCLK
SDI
SDO/ALARM
CS
DAC
Buffer
DAC
Register
Channel 0
Channel 1
Channel 2
DAC
BUF
GAIN
x1 OR x2
OUT0
OUT1
OUT2
Channel 3
OUT3
Channel 4
OUT4
Channel 5
Channel 6
OUT5
OUT6
Channel 7
OUT7
DACx0508
Power On Reset
Power Down Logic
Resistive Network
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.