Voltage-Output DAC. DAC80508 Datasheet

DAC80508 DAC. Datasheet pdf. Equivalent

Part DAC80508
Description Voltage-Output DAC
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DAC80508
Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
DAC80508, DAC70508, DAC60508
SLASEL1D – JUNE 2017 – REVISED AUGUST 2018
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: 2 ppm/°C Typical, DAC80508
• 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
– Clear Output Function: DACx0508C
• 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
– 1.7 V to 5.5 V Operation
– Daisy Chain Operation
– CRC Error Check
• Low Power: 0.6 mA/Channel at 5.5 V
• Small Packages:
– 3 mm × 3 mm, 16-Pin WQFN
– 2.4 mm x 2.4 mm, 16-Pin DSBGA
2 Applications
• Optical Networking
• Wireless Infrastructure
• Industrial Automation
• Data Acquisition Systems
3 Description
The DACx0508 is a pin-compatible family of low
power, eight-channel, buffered voltage-output, digital-
to-analog converters (DACs) with 16-, 14- and 12-bit
resolution. The DACx0508 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). The 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 DACx0508 is performed
through a serial interface that operates at clock rates
up to 50 MHz. The VIO 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 powers up and maintains the DAC outputs at
either zero scale or midscale until a valid code is
written to the device. The device consumes low
current of 0.6 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 DACx0508 is characterized for operation over
the temperature range of –40°C to 125°C and is
available in small packages.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DACx0508
WQFN (16)
DSBGA (16)
3.00 mm × 3.00 mm
2.40 mm x 2.40 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 or CLR1
CS
DAC
Buffer
DAC
Register
DAC BUF
Channel 0
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Channel 6
Channel 7
GAIN
x1 OR x2
DACx0508
Power On Reset
Power Down Logic
Resistive Network
GND
1SDO/ALARM (DACx0508), CLR (DACx0508C)
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
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. PRODUCTION DATA.



DAC80508
DAC80508, DAC70508, DAC60508
SLASEL1D – JUNE 2017 – REVISED AUGUST 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 4
6 Pin Configuration and Functions ......................... 5
7 Specifications......................................................... 6
7.1 Absolute Maximum Ratings ...................................... 6
7.2 ESD Ratings.............................................................. 6
7.3 Recommended Operating Conditions....................... 6
7.4 Thermal Information .................................................. 7
7.5 Electrical Characteristics........................................... 7
7.6 Typical Characteristics ............................................ 10
8 Detailed Description ............................................ 20
8.1 Overview ................................................................. 20
8.2 Functional Block Diagram ....................................... 20
8.3 Feature Description................................................. 21
8.4 Device Functional Modes........................................ 25
8.5 Programming........................................................... 28
8.6 Register Map........................................................... 30
9 Application and Implementation ........................ 36
9.1 Application Information............................................ 36
9.2 Typical Application ................................................. 38
10 Power Supply Recommendations ..................... 40
11 Layout................................................................... 41
11.1 Layout Guidelines ................................................. 41
11.2 Layout Examples................................................... 41
12 Device and Documentation Support ................. 43
12.1 Related Links ........................................................ 43
12.2 Receiving Notification of Documentation Updates 43
12.3 Community Resources.......................................... 43
12.4 Trademarks ........................................................... 43
12.5 Electrostatic Discharge Caution ............................ 43
12.6 Glossary ................................................................ 43
13 Mechanical, Packaging, and Orderable
Information ........................................................... 43
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (April 2018) to Revision D
Page
• Changed TUE in Features from ±0.14% to 0.1% .................................................................................................................. 1
• Changed Low Drift in Features from 5 ppm/°C to 2 ppm/°C and added DAC80508 ............................................................. 1
• Added Clear Output Function: DACx0508C to Features........................................................................................................ 1
• Deleted 4-Wire Mode from Features ...................................................................................................................................... 1
• Deleted 4-wire from second paragraph in Description .......................................................................................................... 1
• Deleted DAC80508 Product Preview footnote from Device Information ................................................................................ 1
• Deleted Product Preview from DAC80508Z and DAC80508M in Device Comparison Table ............................................... 4
• Added DAC80508ZC and DAC80508MC to Device Comparison Table ............................................................................... 4
• Added DAC60508ZC and DAC60508MC to Device Comparison Table ............................................................................... 4
• Added DACx0508 to SDO/ALARM pin description in Pin Functions ..................................................................................... 5
• Added CLR pin (DACx0508C) in Pin Functions ..................................................................................................................... 5
• Changed SCLK, SDI, SDO/ALARM and CS to Digital pins for Pin voltage in Absolute Maximum Ratings ......................... 6
• Added Total unadjusted error, DAC80508. All Gains row in Electrical Characteristics ........................................................ 7
• Added Offset error, DAC80508. WQFN and BGA packages. All gains. row in Electrical Characteristics ............................ 7
• Added Full-scale error, DAC80508.All gains row in Electrical Characteristics ...................................................................... 7
• Added Gain error, DAC80508 row in Electrical Characteristics ............................................................................................ 7
• Changed Short circuit current, DAC code = full scale. Output shorted to GND TYP from 35 mA to 30 mA in
Electrical Characteristics ........................................................................................................................................................ 8
• Changed Short circuit current, DAC code = zero scale. Output shorted to VDD TYP from 30 mA to 35 mA in
Electrical Characteristics ....................................................................................................................................................... 8
• Added Channel to Channel DC crosstalk, DAC80508. Measured channel at midscale. Adjacent channel at full scale
in Electrical Characteristics ................................................................................................................................................... 8
• Added Channel to Channel DC crosstalk, DAC80508. Measured channel at midscale. All other channels at full scale
in Electrical Characteristics ................................................................................................................................................... 8
• Added Reference output drift, DAC80508 in Electrical Characteristics ................................................................................ 9
• Added Reference thermal hysteresis, DAC80508. First cycle in Electrical Characteristics .................................................. 9
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