DAC121C081 Digital-to-Analog Converter Datasheet

DAC121C081 Datasheet, PDF, Equivalent


Part Number

DAC121C081

Description

12-Bit Micro Power Digital-to-Analog Converter

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download DAC121C081 Datasheet


DAC121C081
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DAC121C081, DAC121C085
SNAS395F – DECEMBER 2007 – REVISED OCTOBER 2016
DAC121C081 and DAC121C085 12-Bit Micro Power Digital-to-Analog Converter With an
I2C-Compatible Interface
1 Features
1 Ensured Monotonicity to 12-Bits
• Low Power Operation: 156-µA Maximum at 3.3 V
• Extended Power Supply Range (2.7 V to 5.5 V)
• I2C-Compatible 2-Wire Interface Which Supports
Standard (100-kHz), Fast (400-kHz), and High-
Speed (3.4-MHz) Modes
• Rail-to-Rail Voltage Output
• Very Small Package
• Resolution: 12 bits
• INL: ±8 LSB (Maximum)
• DNL: 0.6 / –0.5 LSB (Maximum)
• Settling Time: 8.5 µs (Maximum)
• Zero Code Error: 10 mV (Maximum)
• Full-Scale Error: 0.7%FS (Maximum)
• Supply Power
– Normal: 380 µW (3 V) / 730 µW (5 V) (Typical)
– Power Down: 0.5 µW (3 V) / 0.9 µW (5 V)
(Typical)
2 Applications
• Industrial Process Control
• Portable Instruments
• Digital Gain and Offset Adjustment
• Programmable Voltage and Current Sources
• Test Equipment
3 Description
The DAC121C081 is a 12-bit, single-channel,
voltage-output digital-to-analog converter (DAC) that
operates from a 2.7-V to 5.5-V supply. The output
amplifier allows rail-to-rail output swing and has an
8.5-µs settling time. The DAC121C081 uses the
supply voltage as the reference to provide the widest
dynamic output range, and typically consumes 132
µA while operating at 5 V. It is available in 6-pin SOT
and WSON packages, and provides three address
options (pin selectable).
As an alternative, the DAC121C085 provides nine I2C
addressing options and uses an external reference. It
has the same performance and settling time as the
DAC121C081, and is available in an 8-lead VSSOP.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DAC121C081
WSON (6)
SOT (6)
2.20 mm × 2.50 mm
1.60 mm × 2.90 mm
DAC121C085
VSSOP (8)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
POWER-ON
RESET
Block Diagram
VA* VREF*
GND
DAC121C081 / DAC121C085
DAC
REGISTER
REF
12 BIT DAC
12
BUFFER
VOUT
12
I2C
INTERFACE
POWER-DOWN
CONTROL
LOGIC
2.5k 100k
ADR1* ADR0
SCL SDA
* NOTE: ADR1 and VREF are for the DAC121C085 only. The DAC121C085 uses an external
reference (VREF), whereas, the DAC121C081 uses the supply (VA) as the reference.
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.

DAC121C081
DAC121C081, DAC121C085
SNAS395F – DECEMBER 2007 – REVISED OCTOBER 2016
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....................... 6
7.4 Thermal Information .................................................. 6
7.5 Electrical Characteristics........................................... 7
7.6 AC and Timing Characteristics ................................. 9
7.7 Typical Characteristics ............................................ 12
8 Detailed Description ............................................ 15
8.1 Overview ................................................................. 15
8.2 Functional Block Diagram ....................................... 15
8.3 Feature Description................................................. 15
8.4 Device Functional Modes........................................ 20
8.5 Programming........................................................... 20
8.6 Registers ................................................................. 21
9 Application and Implementation ........................ 22
9.1 Application Information............................................ 22
9.2 Typical Application ................................................. 24
10 Power Supply Recommendations ..................... 26
10.1 Using References as Power Supplies................... 26
11 Layout................................................................... 29
11.1 Layout Guidelines ................................................. 29
11.2 Layout Example .................................................... 29
12 Device and Documentation Support ................. 30
12.1 Device Support...................................................... 30
12.2 Documentation Support ........................................ 31
12.3 Related Links ........................................................ 31
12.4 Trademarks ........................................................... 31
12.5 Electrostatic Discharge Caution ............................ 31
12.6 Glossary ................................................................ 31
13 Mechanical, Packaging, and Orderable
Information ........................................................... 31
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision E (January 2016) to Revision F
Page
• Changed VOUT and VA descriptions. ....................................................................................................................................... 4
• Added column to Table 1. ................................................................................................................................................... 19
Changes from Revision D (March 2013) to Revision E
Page
• Added 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
• Added addresses that the DAC responds to on the I2C bus. ............................................................................................. 18
Changes from Revision C (March 2013) to Revision D
Page
• Changed layout of National Semiconductor Data Sheet to TI format .................................................................................. 29
2 Submit Documentation Feedback
Copyright © 2007–2016, Texas Instruments Incorporated
Product Folder Links: DAC121C081 DAC121C085


Features Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity DAC121C081, DAC121C085 SNAS395F – DECEMBER 2007 – REVISED OCTOBER 2016 DAC121C081 and DAC121C085 12-Bit M icro Power Digital-to-Analog Converter With an I2C-Compatible Interface 1 Fea tures •1 Ensured Monotonicity to 12-B its • Low Power Operation: 156-µA Ma ximum at 3.3 V • Extended Power Suppl y Range (2.7 V to 5.5 V) • I2C-Compat ible 2-Wire Interface Which Supports St andard (100-kHz), Fast (400-kHz), and H ighSpeed (3.4-MHz) Modes • Rail-to-Ra il Voltage Output • Very Small Packag e • Resolution: 12 bits • INL: ±8 LSB (Maximum) • DNL: 0.6 / –0.5 LSB (Maximum) • Settling Time: 8.5 µs ( Maximum) • Zero Code Error: 10 mV (Ma ximum) • Full-Scale Error: −0.7%FS (Maximum) • Supply Power – Normal: 380 µW (3 V) / 730 µW (5 V) (Typical) – Power Down: 0.5 µW (3 V) / 0.9 µ W (5 V) (Typical) 2 Applications • I ndustrial Process Control • Portable Instruments • Digital Gain and Offset Adjustment • Programmable Voltage a.
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