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DAC8822QCDBTRG4

更新时间： 2024-09-10 04:09:39
品牌 Logo 应用领域
BB 转换器光电二极管
页数 文件大小 规格书
24页 500K
描述
16-Bit, Dual, Parallel Input, Multiplying Digital-to-Analog Converter

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DAC8822  
SBAS390A–DECEMBER 2006–REVISED MARCH 2007  
16-Bit, Dual, Parallel Input, Multiplying  
Digital-to-Analog Converter  
FEATURES  
DESCRIPTION  
•
•
•
•
±0.5LSB DNL  
The DAC8822 dual, multiplying digital-to-analog  
converter (DAC) is designed to operate from a single  
2.7V to 5.5V supply.  
±1LSB INL  
Low Noise: 12nV/√Hz  
Low Power Operation:  
IDD = 1µA per Channel at 2.7V  
2mA Full-Scale Current, with VREF = 10V  
Settling Time: 0.5µs  
The applied external reference input voltage VREF  
determines the full-scale output current. An internal  
feedback resistor (RFB  
)
provides temperature  
•
•
•
•
•
•
•
•
•
•
•
•
•
tracking for the full-scale output when combined with  
an external, current-to-voltage (I/V) precision  
amplifier.  
16-Bit Monotonic  
4-Quadrant Multiplying Reference Inputs  
Reference Bandwidth: 10MHz  
Reference Input: ±18V  
A RSTSEL pin allows system reset assertion (RS) to  
force all registers to zero code when RSTSEL = '0',  
or to midscale code when RSTSEL = '1'. Additionally,  
an internal power-on reset forces all registers to zero  
or midscale code at power-up, depending on the  
state of the RSTSEL pin.  
Reference Dynamics: –105 THD  
Midscale or Zero Scale Reset  
Analog Power Supply: +2.7V to +5.5V  
TSSOP-38 Package  
A
parallel  
interface  
offers  
high-speed  
communications. The DAC8822 is packaged in a  
space-saving TSSOP-38 package and has an  
industry-standard pinout. The device is specified  
from –40°C to +125°C.  
Industry-Standard Pin Configuration  
Pin-Compatible with the 14-Bit DAC8805  
Temperature Range: –40°C to +125°C  
For  
a 14-bit, pin-compatible version, see the  
DAC8805.  
APPLICATIONS  
•
•
•
•
Automatic Test Equipment  
Instrumentation  
Digitally Controlled Calibration  
Industrial Control PLCs  
DGND  
VDD  
R1A RCOM  
A
VREFA ROFS  
A
RFBA  
R1A  
R2A  
ROFSA  
RFBA  
D0  
Input A  
DAC A  
Parallel  
Bus  
D15  
DAC A  
DAC B  
IOUT  
A
Register  
Register  
WR  
A0  
Interface  
AGNDA  
A1  
Input B  
DAC B  
Register  
Register  
IOUTB  
RS  
LDAC  
Control  
Logic  
AGNDB  
R1B  
R2B  
ROFSB  
RFBB  
Power-On  
Reset  
RSTSEL  
R1B  
RCOMB  
VREFB ROFS  
B
RFBB  
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.  
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 © 2006–2007, Texas Instruments Incorporated  
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