Converter. DAC1220 Datasheet

DAC1220 Datasheet PDF


Part

DAC1220

Description

20-Bit Low-Power Digital-to-Analog Converter

Manufacture

etcTI

Page 29 Pages
Datasheet
Download DAC1220 Datasheet


DAC1220 Datasheet
DAC1220
DAC1220
www.ti.com...................................................................................................................................... SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 2009
20-Bit, Low-Power
Digital-to-Analog Converter
Check for Samples: DAC1220
FEATURES
1
2 20-Bit Monotonicity Ensured Over –40°C to
+85°C
• Low Power: 2.5mW
• Voltage Output
• Settling Time: 2ms to 0.012%
• Maximum Linearity Error: ±0.0015%
• On-Chip Calibration
APPLICATIONS
• Process Control
• ATE Pin Electronics
• Closed-Loop Servo Control
• Smart Transmitters
• Portable Instruments
XIN XOUT VREF
DESCRIPTION
The DAC1220 is a 20-bit digital-to-analog (D/A)
converter offering 20-bit monotonic performance over
the specified temperature range. It utilizes
delta-sigma technology to achieve inherently linear
performance in a small package at very low power.
The resolution of the device can be programmed to
20 bits for Full-Scale, settling to 0.003% within 15ms
typical, or 16 bits for Full-Scale, settling to 0.012%
within 2ms max. The output range is two times the
external reference voltage. On-chip calibration
circuitry dramatically reduces low offset and gain
errors.
The DAC1220 features a synchronous serial
interface; in single-converter applications, the serial
interface can be accomplished with just two wires,
allowing low-cost isolation. For multiple converters, a
CS signal allows for selection of the appropriate D/A
converter.
The DAC1220 has been designed for closed-loop
control applications in the industrial process control
market and high-resolution applications in the test
and measurement market. It is also ideal for remote
applications, battery-powered instruments, and
isolated systems. The DAC1220 is available in an
SSOP-16 package.
AVDD AGND
Clock Generator
Microcontroller
Instruction Register
Command Register
Data Register
Offset Register
Full−Scale Register
SDIO
SCLK
Serial
Interface
2nd−Order
∆Σ
Modulator
1st−Order
Switched
Capacitor Filter
2nd−Order
Continuous
Time Post Filter
Modulator Control
CS
DVDD
DGND
C1
VOUT
C2
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1998–2009, Texas Instruments Incorporated

DAC1220 Datasheet
DAC1220
SBAS082G – FEBRUARY 1998 – REVISED SEPTEMBER 2009...................................................................................................................................... www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
PACKAGE/ORDERING INFORMATION
For the most current package and ordering information see the Package Option Addendum at the end of this
document, or see the TI web site at www.ti.com.
ABSOLUTE MAXIMUM RATINGS(1)
Over operating free-air temperature range (unless otherwise noted).
DAC1220
AVDD to DVDD
AVDD to AGND
DVDD to DGND
AGND to DGND
±0.3
–0.3 to +6
–0.3 to +6
±0.3
VREF voltage to AGND
Digital input voltage to DGND
Digital output voltage to DGND
Package power dissipation
Maximum junction temperature (TJmax)
Thermal resistance, θ JA
Lead temperature (soldering, 10s)
SSOP-16
+2.0 to +3.0
–0.3 to DVDD + 0.3
–0.3 to DVDD + 0.3
(TJmax – TA) / θ JA
+150
200
+300
UNIT
V
V
V
V
V
V
V
W
°C
°C/W
°C
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under the Electrical Characteristics
is not implied. Exposure to absolute maximum rated conditions for extended periods may affect device reliability.
2 Submit Documentation Feedback
Product Folder Link(s): DAC1220
Copyright © 1998–2009, Texas Instruments Incorporated


Features Datasheet pdf DAC1220 DAC1220 www.ti.com............ ....................................... ....................................... ....................................... ..... SBAS082G – FEBRUARY 1998 – RE VISED SEPTEMBER 2009 20-Bit, Low-Power Digital-to-Analog Converter Check for S amples: DAC1220 FEATURES 1 •2 20-Bit Monotonicity Ensured Over –40°C to +85°C • Low Power: 2.5mW • Voltage Output • Settling Time: 2ms to 0.012 % • Maximum Linearity Error: ±0.0015 % • On-Chip Calibration APPLICATIONS • Process Control • ATE Pin Electro nics • Closed-Loop Servo Control • Smart Transmitters • Portable Instrum ents XIN XOUT VREF DESCRIPTION The DAC 1220 is a 20-bit digital-to-analog (D/A ) converter offering 20-bit monotonic p erformance over the specified temperatu re range. It utilizes delta-sigma techn ology to achieve inherently linear perf ormance in a small package at very low power. The resolution of the device can be programmed to 20 bits for Full-Scale, settling to 0.003% within 15ms typical, or 16 bits f.
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