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ADS8504

更新时间: 2024-11-30 04:31:51
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19页 379K
描述
12-BIT 250-KSPS SAMPLING CMOS ANALOG-TO-DIGITAL CONVERTER

ADS8504 数据手册

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ADS8504  
SLAS434JUNE 2005  
12-BIT 250-KSPS SAMPLING CMOS ANALOG-TO-DIGITAL CONVERTER  
FEATURES  
APPLICATIONS  
Industrial Process Control  
Data Acquisition Systems  
Digital Signal Processing  
Medical Equipment  
250-kHz Sampling Rate  
Standard ±10-V Input Range  
73-dB SINAD With 45-kHz Input  
±0.45 LSB Max INL  
Instrumentation  
±0.45 LSB Max DNL  
12 Bit No Missing Code  
DESCRIPTION  
±1 LSB Bipolar Zero Errors  
±0.4 PPM/°C Bipolar Zero Error Drift  
Single 5-V Supply Operation  
The ADS8504 is a complete 12-bit sampling A/D  
converter using state-of-the-art CMOS structures. It  
contains a complete 12-bit, capacitor-based, SAR  
A/D with S/H, reference, clock, interface for  
microprocessor use, and 3-state output drivers.  
Pin-Compatible With ADS7804/05 (Low Speed)  
and 16-Bit ADS8505  
The ADS8504 is specified at a 250-kHz sampling rate  
over the full temperature range. Precision resistors  
provide an industry standard ±10-V input range, while  
the innovative design allows operation from a single  
+5-V supply, with power dissipation under 100 mW.  
Uses Internal or External Reference  
Full Parallel Data Output  
70-mW Typ Power Dissipation at 250 KSPS  
28-Pin SOIC Package  
The ADS8504 is available in a 28-pin SOIC package  
and is fully specified for operation over the industrial  
-40°C to 85°C temperature range.  
R/C  
CS  
Clock  
Successive Approximation Register and Control Logic  
BYTE  
BUSY  
CDAC  
Output  
Latches  
and  
Three  
State  
Three  
State  
Parallel  
Data  
9.8 k  
± 10 V Input  
2 kΩ  
5 kΩ  
Comparator  
Bus  
Drivers  
CAP  
Internal  
+2.5 V Ref  
Buffer  
4 kΩ  
REF  
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 © 2005, Texas Instruments Incorporated  

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