DAC128S085 Digital-to-Analog Converter Datasheet

DAC128S085 Datasheet, PDF, Equivalent


Part Number

DAC128S085

Description

12-Bit Micro-Power OCTAL Digital-to-Analog Converter

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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DAC128S085
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DAC128S085
SNAS407H – AUGUST 2007 – REVISED APRIL 2015
DAC128S085 12-Bit Micro-Power OCTAL Digital-to-Analog Converter With Rail-to-Rail
Outputs
1 Features
1 Ensured Monotonicity
• Low Power Operation
• Rail-to-Rail Voltage Output
• Daisy-Chain Capability
• Power-on Reset to 0 V
• Simultaneous Output Updating
• Individual Channel Power-Down Capability
• Wide Power Supply Range (2.7 V to 5.5 V)
• Dual Reference Voltages With Range of 0.5 V to
VA
• Operating Temperature Range of 40°C to 125°C
• Smallest Package in the Industry
• Resolution 12 Bits
• INL ±8 LSB (Maximum)
• DNL 0.75 / 0.4 LSB (Maximum)
• Settling Time 8.5 μs (Maximum)
• Zero Code Error 15 mV (Maximum)
• Full-Scale Error 0.75 %FSR (Maximum)
• Supply Power
– 1.95 mW (3 V) / 4.85 mW (5 V) Typical
– Power Down 0.3 μW (3 V) / 1 μW (5 V) Typical
2 Applications
• Battery-Powered Instruments
• Digital Gain and Offset Adjustment
• Programmable Voltage and Current Sources
• Programmable Attenuators
• Voltage Reference for ADCs
• Sensor Supply Voltage
• Range Detectors
3 Description
The DAC128S085 is a full-featured, general-purpose
OCTAL 12-bit voltage-output digital-to-analog
converter (DAC) that can operate from a single 2.7-V
to 5.5-V supply and consumes 1.95 mW at 3 V and
4.85 mW at 5 V. The DAC128S085 is packaged in a
16-lead WQFN package and a 16-lead TSSOP
package. The WQFN package makes the
DAC128S085 the smallest OCTAL DAC in its class.
The on-chip output amplifiers allow rail-to-rail output
swing, and the 3-wire serial interface operates at
clock rates up to 40 MHz over the entire supply
voltage range. Competitive devices are limited to 25-
MHz clock rates at supply voltages in the 2.7-V to
3.6-V range. The serial interface is compatible with
standard SPI™, QSPI, MICROWIRE, and DSP
interfaces. The DAC128S085 also offers daisy-chain
operation, where an unlimited number of
DAC128S085s can be updated simultaneously using
a single serial interface.
There are two references for the DAC128S085. One
reference input serves channels A through D, while
the other reference serves channels E through H.
Each reference can be set independently between
0.5 V and VA, providing the widest possible output
dynamic range. The DAC128S085 has a 16-bit input
shift register that controls the mode of operation, the
power-down condition, and the register/output value
of the DAC channels. All eight DAC outputs can be
updated simultaneously or individually.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
DAC128S085
TSSOP (16)
WQFN (16)
5.00 mm × 4.4 mm
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
Wide supply range
VDD
2 Individual
References
independent of
VDD
VREF2 VREF1
MCU
(Master)
4-wire SPI
Digital I/O
tolerant of
Master to DAC
rail potential
mismatch
OUTA
OUTB
OUTC
OUTD
OUTE
OUTF
OUTG
OUTH
GND
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.

DAC128S085
DAC128S085
SNAS407H – AUGUST 2007 – REVISED APRIL 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (continued)......................................... 3
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ...................................... 5
7.2 ESD Ratings ............................................................ 5
7.3 Recommended Operating Conditions....................... 5
7.4 Thermal Information .................................................. 6
7.5 Electrical Characteristics........................................... 6
7.6 AC and Timing Characteristics ................................. 9
7.7 Typical Characteristics ............................................ 11
8 Detailed Description ............................................ 15
8.1 Overview ................................................................. 15
8.2 Functional Block Diagram ....................................... 15
8.3 Feature Description................................................. 16
8.4 Device Functional Modes........................................ 20
8.5 Programming........................................................... 21
9 Application and Implementation ........................ 22
9.1 Application Information............................................ 22
9.2 Typical Application ................................................. 22
10 Power Supply Recommendations ..................... 23
11 Layout................................................................... 23
11.1 Layout Guidelines ................................................. 23
11.2 Layout Example .................................................... 24
12 Device and Documentation Support ................. 25
12.1 Device Support...................................................... 25
12.2 Documentation Support ........................................ 26
12.3 Trademarks ........................................................... 26
12.4 Electrostatic Discharge Caution ............................ 26
12.5 Glossary ................................................................ 26
13 Mechanical, Packaging, and Orderable
Information ........................................................... 26
4 Revision History
Changes from Revision G (January 2015) to Revision H
Page
• Switched WQFN and TSSOP pinouts to their correct titles .................................................................................................. 4
• Re-drew TSSOP pinout as a square to better reflect mechanical packaging drawings ........................................................ 4
Changes from Revision F (March 2013) to Revision G
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
Changes from Revision E (March 2013) to Revision F
Page
• Changed layout of National Data Sheet to TI format ........................................................................................................... 23
2 Submit Documentation Feedback
Copyright © 2007–2015, Texas Instruments Incorporated
Product Folder Links: DAC128S085


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community DAC128S085 SNAS407H – AUGU ST 2007 – REVISED APRIL 2015 DAC128S0 85 12-Bit Micro-Power OCTAL Digital-to- Analog Converter With Rail-to-Rail Outp uts 1 Features •1 Ensured Monotonici ty • Low Power Operation • Rail-to- Rail Voltage Output • Daisy-Chain Cap ability • Power-on Reset to 0 V • S imultaneous Output Updating • Individ ual Channel Power-Down Capability • W ide Power Supply Range (2.7 V to 5.5 V) • Dual Reference Voltages With Range of 0.5 V to VA • Operating Temperatu re Range of −40°C to 125°C • Smal lest Package in the Industry • Resolu tion 12 Bits • INL ±8 LSB (Maximum) • DNL 0.75 / −0.4 LSB (Maximum) • Settling Time 8.5 μs (Maximum) • Ze ro Code Error 15 mV (Maximum) • Full- Scale Error −0.75 %FSR (Maximum) • Supply Power – 1.95 mW (3 V) / 4.85 m W (5 V) Typical – Power Down 0.3 μW (3 V) / 1 μW (5 V) Typical 2 Applications • Battery-Powered Instruments • Digital Gain and Offset Adjustment • Program.
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