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DAC1220E/2K5 其他数据使用手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
DA转换器
封装:
SSOP-16
描述:
20位，低功耗数位类比转换器 20-Bit, Low-Power Digital-to-Analog Converter
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封装尺寸在P21P23P24P26
焊盘布局在P27
标记信息在P21
封装信息在P21P22P23P24
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DAC1220E/2K5数据手册
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DAC1220
Clock Generator
Serial
Interface
2nd−Order
∆Σ
Modulator
Instruction Register
Command Register
Data Register
Offset Register
Full−Scale Register
Microcontroller
1st−Order
Switched
Capacitor Filter
2nd−Order
Continuous
Time Post Filter
Modulator Control
AV
DD
AGNDX
IN
X
OUT
V
REF
CS DV
DD
DGND
C
1
C
2
SDIO
V
OUT
SCLK
DAC1220
www.ti.com
...................................................................................................................................... SBAS082G –FEBRUARY 1998–REVISED SEPTEMBER 2009
20-Bit, Low-Power
Digital-to-Analog Converter
Check for Samples: DAC1220
1
FEATURES
DESCRIPTION
2
• 20-Bit Monotonicity Ensured Over –40°C to
The DAC1220 is a 20-bit digital-to-analog (D/A)
+85°C
converter offering 20-bit monotonic performance over
the specified temperature range. It utilizes
• Low Power: 2.5mW
delta-sigma technology to achieve inherently linear
• Voltage Output
performance in a small package at very low power.
• Settling Time: 2ms to 0.012%
The resolution of the device can be programmed to
20 bits for Full-Scale, settling to 0.003% within 15ms
• Maximum Linearity Error: ±0.0015%
typical, or 16 bits for Full-Scale, settling to 0.012%
• On-Chip Calibration
within 2ms max. The output range is two times the
external reference voltage. On-chip calibration
APPLICATIONS
circuitry dramatically reduces low offset and gain
• Process Control
errors.
• ATE Pin Electronics
The DAC1220 features a synchronous serial
• Closed-Loop Servo Control
interface; in single-converter applications, the serial
• Smart Transmitters
interface can be accomplished with just two wires,
allowing low-cost isolation. For multiple converters, a
• Portable Instruments
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.
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.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 1998–2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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