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ADS7843E-LF PDF预览

ADS7843E-LF

更新时间: 2024-11-27 12:58:07
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
18页 652K
描述
4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16

ADS7843E-LF 技术参数

生命周期:Obsolete包装说明:SSOP,
Reach Compliance Code:compliantHTS代码:8542.39.00.01
风险等级:5.73最大模拟输入电压:5 V
最小模拟输入电压:最长转换时间:6 µs
转换器类型:ADC, SUCCESSIVE APPROXIMATIONJESD-30 代码:R-PDSO-G16
长度:4.89 mm最大线性误差 (EL):0.0488%
模拟输入通道数量:4位数:12
功能数量:1端子数量:16
最高工作温度:85 °C最低工作温度:-40 °C
输出位码:BINARY输出格式:SERIAL
封装主体材料:PLASTIC/EPOXY封装代码:SSOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, SHRINK PITCH
采样速率:0.125 MHz采样并保持/跟踪并保持:SAMPLE
座面最大高度:1.75 mm标称供电电压:2.7 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子形式:GULL WING
端子节距:0.635 mm端子位置:DUAL
宽度:3.9 mmBase Number Matches:1

ADS7843E-LF 数据手册

 浏览型号ADS7843E-LF的Datasheet PDF文件第2页浏览型号ADS7843E-LF的Datasheet PDF文件第3页浏览型号ADS7843E-LF的Datasheet PDF文件第4页浏览型号ADS7843E-LF的Datasheet PDF文件第5页浏览型号ADS7843E-LF的Datasheet PDF文件第6页浏览型号ADS7843E-LF的Datasheet PDF文件第7页 
ADS7843  
SBAS090B SEPTEMBER 2000 REVISED MAY 2002  
TOUCH SCREEN CONTROLLER  
DESCRIPTION  
FEATURES  
4-WIRE TOUCH SCREEN INTERFACE  
RATIOMETRIC CONVERSION  
SINGLE SUPPLY: 2.7V to 5V  
UP TO 125kHz CONVERSION RATE  
SERIAL INTERFACE  
The ADS7843 is a 12-bit sampling Analog-to-Digital Con-  
verter (ADC) with a synchronous serial interface and low on-  
resistance switches for driving touch screens. Typical power  
dissipation is 750µW at a 125kHz throughput rate and a  
+2.7V supply. The reference voltage (VREF) can be varied  
between 1V and +VCC, providing a corresponding input  
voltage range of 0V to VREF. The device includes a shutdown  
mode which reduces typical power dissipation to under  
0.5µW. The ADS7843 is specified down to 2.7V operation.  
PROGRAMMABLE 8- OR 12-BIT RESOLUTION  
2 AUXILIARY ANALOG INPUTS  
FULL POWER-DOWN CONTROL  
Low power, high speed, and onboard switches make the  
ADS7843 ideal for battery-operated systems such as per-  
sonal digital assistants with resistive touch screens and other  
portable equipment. The ADS7843 is available in an  
SSOP-16 package and is specified over the –40°C to +85°C  
temperature range.  
APPLICATIONS  
PERSONAL DIGITAL ASSISTANTS  
PORTABLE INSTRUMENTS  
POINT-OF-SALES TERMINALS  
PAGERS  
US Patent No. 6246394  
TOUCH SCREEN MONITORS  
PENIRQ  
+VCC  
X+  
X–  
SAR  
DCLK  
CS  
Y+  
Y–  
Four  
Channel  
Comparator  
Multiplexer  
Serial  
Interface  
and  
CDAC  
DIN  
DOUT  
Control  
IN3  
IN4  
BUSY  
VREF  
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 © 2001, Texas Instruments Incorporated  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
www.ti.com  

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