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ADS8508 PDF预览

ADS8508

更新时间: 2024-01-27 09:46:38
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
27页 631K
描述
12-BIT 250-KSPS SERIAL CMOS SAMPLING ANALOG-TO-DIGITAL CONVERTER

ADS8508 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:SOIC
包装说明:SOP, SOP20,.4针数:20
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.43
最大模拟输入电压:10 V最小模拟输入电压:-10 V
最长转换时间:4 µs转换器类型:ADC, SUCCESSIVE APPROXIMATION
JESD-30 代码:R-PDSO-G20JESD-609代码:e4
长度:12.8 mm最大线性误差 (EL):0.011%
湿度敏感等级:2模拟输入通道数量:1
位数:12功能数量:1
端子数量:20最高工作温度:85 °C
最低工作温度:-40 °C输出位码:BINARY, 2'S COMPLEMENT BINARY
输出格式:SERIAL封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP20,.4
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):260电源:5 V
认证状态:Not Qualified采样速率:0.25 MHz
采样并保持/跟踪并保持:SAMPLE座面最大高度:2.65 mm
子类别:Analog to Digital Converters最小供电电压:4.75 V
标称供电电压:5 V表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:7.5 mm
Base Number Matches:1

ADS8508 数据手册

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ADS8508  
SLAS433SEPTEMBER 2005  
12-BIT 250-KSPS SERIAL CMOS SAMPLING ANALOG-TO-DIGITAL CONVERTER  
FEATURES  
APPLICATIONS  
Industrial Process Control  
Data Acquisition Systems  
Digital Signal Processing  
Medical Equipment  
250-kHz Sampling Rate  
4-V, 5-V, 10-V, ±3.33-V, ±5-V, and ±10-V Input  
Ranges  
73-dB SINAD With 45-kHz Input  
±0.45 LSB Max INL  
Instrumentation  
±0.45 LSB Max DNL, 12-Bits No Missing  
Codes  
DESCRIPTION  
The ADS8508 is  
a
complete 12-bit sampling  
±1 LSB Bipolar Zero Errors  
analog-to-digital (A/D) converter using state-of-the-art  
CMOS structures. It contains a complete 12-bit,  
capacitor-based, successive approximation register  
(SAR) A/D converter with sample-and-hold, refer-  
ence, clock, and a serial data interface. Data can be  
output using the internal clock or can be  
synchronized to an external data clock. The ADS8508  
also provides an output synchronization pulse for  
ease of use with standard DSP processors.  
±0.4 PPM/°C Bipolar Zero Error Drift  
Six Specified Input Ranges  
SPI Compatible Serial Output with  
Daisy-Chain (TAG) Feature  
5-V Supply  
Pin-Compatible With ADS7808 (Low Speed)  
and 16-Bit ADS8509/7809  
Uses Internal or External Reference  
70-mW Typ Power Dissipation at 250 KSPS  
20-Pin SO Package  
The ADS8508 is specified at a 250-kHz sampling rate  
over the full temperature range. Precision resistors  
provide various input ranges including ±10 V and 0 V  
to 5 V, while the innovative design allows operation  
from a single +5-V supply with power dissipation  
under 100 mW.  
Simple DSP Interface  
The ADS8508 is available in a 20-pin SO package,  
fully specified for operation over the industrial -40°C  
to 85°C temperature range.  
Successive Approximation Register  
Clock  
EXT/INT  
CDAC  
9.8 k  
4.9 kΩ  
2.5 kΩ  
R1  
R2  
IN  
BUSY  
Serial  
Data  
Out  
&
IN  
DATACLK  
DATA  
R/C  
10 kΩ  
R3  
IN  
Comparator  
Control  
CAP  
SB/BTC  
CS  
Internal  
+2.5 V Ref  
Buffer  
4 kΩ  
PWRD  
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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