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DAC1220E 参数 Datasheet PDF下载

DAC1220E图片预览
型号: DAC1220E
PDF下载: 下载PDF文件 查看货源
内容描述: 20位低功耗数位类比转换器 [20-Bit Low Power DIGITAL-TO-ANALOG CONVERTER]
分类和应用: 转换器数模转换器光电二极管PC
文件页数/大小: 14 页 / 125 K
品牌: BURR-BROWN [ BURR-BROWN CORPORATION ]
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®
DAC
1
220
DAC1220
For most current data sheet and other product
information, visit www.burr-brown.com
20-Bit Low Power
DIGITAL-TO-ANALOG CONVERTER
FEATURES
q
20-BIT MONOTONICITY GUARANTEED
OVER –40
°
C to +85
°
C
q
LOW POWER: 2.5mW
q
VOLTAGE OUTPUT
q
SETTLING TIME: 2ms to 0.012%
q
MAX LINEARITY ERROR:
±
0.0015%
q
ON-CHIP CALIBRATION
APPLICATIONS
q
PROCESS CONTROL
q
ATE PIN ELECTRONICS
q
CLOSED-LOOP SERVO-CONTROL
q
SMART TRANSMITTERS
q
PORTABLE INSTRUMENTS
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 re-
duces low offset and gain errors.
X
IN
X
OUT
V
REF
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 appli-
cations, battery-powered instruments, and isolated sys-
tems. The DAC1220 is available in a SSOP-16
package.
AV
DD
AGND
Clock Generator
Microcontroller
Instruction Register
Command Register
Data Register
Offset Register
Full-Scale Register
Second-Order
∆∑
Modulator
First-Order
Switched
Capacitor Filter
Second-Order
Continuous
Time Post Filter
C
1
V
OUT
C
2
SDIO
SCLK
Serial
Interface
Modulator Control
CS
DV
DD
DGND
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
®
© 1998 Burr-Brown Corporation
PDS-1418B
1
Printed in U.S.A. April , 2000