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DAC8805_14

更新时间： 2024-09-16 02:58:47
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德州仪器 - TI /
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25页 798K
描述
14-Bit, Dual, Parallel Input, Multiplying Digital-to-Analog Converter

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DAC8805  
SBAS391A–DECEMBER 2006–REVISED MAY 2007  
14-Bit, Dual, Parallel Input, Multiplying  
Digital-to-Analog Converter  
FEATURES  
DESCRIPTION  
•
•
•
•
•
•
•
•
•
•
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±0.5LSB DNL  
The DAC8805 dual, multiplying digital-to-analog  
converter (DAC) is designed to operate from a single  
2.7V to 5.5V supply.  
±0.5LSB INL  
Low Noise: 12nV/√Hz  
The applied external reference input voltage VREF  
determines the full-scale output current. An internal  
Low Power: IDD = 1µA per channel at 2.7V  
2mA Full-Scale Current, with VREF = 10V  
Settling Time: 0.5µs  
feedback resistor (RFB  
)
provides temperature  
tracking for the full-scale output when combined with  
an external, current-to-voltage (I/V) precision  
amplifier.  
14-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 mid-scale code when RSTSEL  
=
'1'.  
Reference Dynamics: –105 THD  
Midscale or Zero Scale Reset  
Analog Power Supply: +2.7V to +5.5V  
TSSOP-38 Package  
Additionally, an internal power-on reset forces all  
registers to zero or mid-scale code at power-up,  
depending on the state of the RSTSEL pin.  
A
parallel  
interface  
offers  
high-speed  
communications. The DAC8805 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 16-Bit DAC8822  
Temperature Range: –40°C to +125°C  
For  
DAC8822.  
a 16-bit, pin-compatible version, see the  
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  
D13  
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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