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ADS8329

更新时间： 2024-11-25 04:31:47
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42页 2086K
描述
LOW POWER, 16-BIT, 1-MHz, SINGLE/DUAL UNIPOLAR INPUT, ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE

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ADS8329 数据手册

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ADS8329  
ADS8330  
SLAS516–DECEMBER 2006  
LOW POWER, 16-BIT, 1-MHz, SINGLE/DUAL UNIPOLAR INPUT, ANALOG-TO-DIGITAL  
CONVERTERS WITH SERIAL INTERFACE  
FEATURES  
APPLICATIONS  
•
•
•
•
•
•
•
Communications  
•
2.7-V to 5.5-V Analog Supply, Low Power:  
Transducer Interface  
Medical Instruments  
Magnetometers  
Industrial Process Control  
Data Acquisition Systems  
Automatic Test Equipment  
–
15.5 mW (1 MHz, +VA = 3 V, +VBD = 1.8 V)  
•
•
1-MHz Sampling Rate 3 V ≤ +VA ≤ 5.5 V,  
900-kHz Sampling Rate 2.7 V ≤ +VA ≤ 3 V  
Excellent DC Performance  
–
–
–
–
–
±1.0 LSB Typ, ±1.75 LSB Max INL  
±0.5 LSB Typ, ±1 LSB Max DNL  
16-Bit NMC Over Temperature  
±0.5 mV Max Offset Error at 3 V  
±1 mV Max Offset Error at 5 V  
DESCRIPTION  
The ADS8329 is a low power, 16-bit, 1-MSPS  
analog-to-digital converter with a unipolar input. The  
device includes a 16-bit capacitor-based SAR A/D  
converter with inherent sample and hold.  
•
Excellent AC Performance at fi = 100 kHz with  
92 dB SNR, 102 dB SFDR, –102 dB THD  
•
•
Built-In Conversion Clock (CCLK)  
1.65 V to 5.5 V I/O Supply  
The ADS8330 is based on the same core and  
includes a 2-to-1 input MUX with programmable  
option of TAG bit output. Both the ADS8329 and  
ADS8330 offer a high-speed, wide voltage serial  
interface and are capable of chain mode operation  
when multiple converters are used.  
–
–
SPI/DSP Compatible Serial  
SCLK up to 50 MHz  
•
Comprehensive Power-Down Modes:  
–
–
–
Deep Powerdown  
Nap Powerdown  
These converters are available in a 4x4 QFN  
package and are fully specified for operation over the  
industrial –40°C to +85°C temperature range.  
Auto Nap Powerdown  
•
•
•
•
•
•
•
•
Unipolar Input Range: 0 V to Vref  
Software Reset  
Low Power, High-Speed SAR Converter Family  
Type/Speed  
Single  
500 kHz  
ADS8327  
ADS8328  
1 MHz  
ADS8329  
ADS8330  
Global CONVST (Independent of CS)  
Programmable Status/Polarity EOC/INT  
16-Pin 4 x 4 QFN Package  
16 Bit Pseudo-Diff  
Dual  
Multi-Chip Daisy Chain Mode  
Programmable TAG Bit Output  
Auto/Manual Channel Select Mode (ADS8330)  
OUTPUT  
LATCH  
and  
3−STATE  
DRIVER  
ADS8330 ADS8329  
SDO  
SAR  
NC  
+IN1  
+IN0  
COM  
+
_
CDAC  
+IN  
FS/CS  
SCLK  
SDI  
CONVERSION  
and  
CONTROL  
LOGIC  
COMPARATOR  
−IN  
REF+  
REF−  
CONVST  
OSC  
EOC/INT/CDI  
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.  
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, Texas Instruments Incorporated  
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