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ADS7881

更新时间： 2024-11-29 04:48:51
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30页 1050K
描述
16-BIT, 1-MSPS, PSEUDO-BIPOLAR, FULLY DIFFERENTIAL INPUT, MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE, REFERENCE

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ADS7881 数据手册

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ADS8472  
SLAS514–DECEMBER 2006  
16-BIT, 1-MSPS, PSEUDO-BIPOLAR, FULLY DIFFERENTIAL INPUT, MICROPOWER  
SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE,  
REFERENCE  
FEATURES  
APPLICATIONS  
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Medical Instruments  
Optical Networking  
Transducer Interface  
High Accuracy Data Acquisition Systems  
Magnetometers  
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0 to 1-MHz Sample Rate  
±0.4 LSB Typ, ±0.65 LSB Max INL  
±0.3 LSB Typ, ±0.5 LSB Max DNL  
16-Bit NMC Ensured Over Temperature  
±0.1-mV Offset Error  
±0.05-PPM/°C Offset Error Drift  
±0.035 %FSR Gain Error  
DESCRIPTION  
The ADS8472 is an 16-bit, 1-MSPS A/C converter  
with an internal 4.096-V reference and  
pseudo-bipolar, fully differential input. The device  
includes a 16-bit capacitor-based SAR A/D converter  
with inherent sample and hold. The ADS8472 offers  
a full 16-bit interface or an 8-bit bus option using two  
read cycles.  
±0.4-PPM/°C Gain Error Drift  
95dB SNR, -120dB THD, 123dB SFDR  
Zero Latency  
a
Low Power: 225 mW at 1 MSPS  
Unipolar Differential Input Range: Vref to –Vref  
Onboard Reference with 6 PPM/°C Drift  
Onboard Reference Buffer  
The ADS8472 is available in a 48-lead 7x7 QFN  
package and is characterized over the industrial  
–40°C to 85°C temperature range.  
High-Speed Parallel Interface  
Wide Digital Supply 2.7 V to 5.25 V  
8-/16-Bit Bus Transfer  
48-Pin 7x7 QFN Package  
HIGH SPEED SAR CONVERTER FAMILY  
TYPE/SPEED  
18-Bit Pseudo-Diff  
500 kHz  
~600 kHz  
750 kHz  
1 MHz  
1.25 MHz  
2 MHz  
3 MHz  
4MHz  
ADS8383  
ADS8381  
ADS8481  
ADS8380 (s)  
ADS8382 (s)  
ADS8370 (s)  
ADS8372 (s)  
18-Bit Pseudo-Bipolar, Fully Diff  
16-Bit Pseudo-Diff  
ADS8482  
ADS8471  
ADS8327  
ADS8328  
ADS8371  
ADS8401  
ADS8405  
ADS8411  
ADS8410 (s)  
ADS8412  
ADS8472  
ADS7886  
ADS8402  
ADS8422  
ADS7881  
16-Bit Pseudo-Bipolar, Fully Diff  
ADS8406  
ADS8413 (s)  
14-Bit Pseudo-Diff  
12-Bit Pseudo-Diff  
ADS7890 (s)  
ADS7891  
ADS7883  
BYTE  
Output  
Latches  
and  
SAR  
16-/8-Bit  
Parallel DATA  
Output Bus  
+
_
3-State  
Drivers  
+IN  
−IN  
CDAC  
Comparator  
REFIN  
CONVST  
BUSY  
CS  
Conversion  
and  
Control Logic  
4.096-V  
Internal  
Reference  
REFOUT  
Clock  
RD  
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.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2006, 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.  
1234567...30

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