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ADS7843E PDF预览

ADS7843E

更新时间: 2024-11-24 22:53:39
品牌 Logo 应用领域
BB 转换器模数转换器光电二极管控制器PC
页数 文件大小 规格书
12页 166K
描述
TOUCH SCREEN CONTROLLER

ADS7843E 技术参数

是否Rohs认证: 不符合生命周期:Transferred
Reach Compliance Code:unknown风险等级:5.77
Is Samacsys:N最大模拟输入电压:2.5 V
最小模拟输入电压:转换器类型:ADC, SUCCESSIVE APPROXIMATION
JESD-30 代码:R-PDSO-G16JESD-609代码:e0
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封装等效代码:SSOP16,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
电源:2.7 V认证状态:Not Qualified
采样速率:0.125 MHz采样并保持/跟踪并保持:SAMPLE
子类别:Analog to Digital Converters标称供电电压:2.7 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:0.635 mm
端子位置:DUAL宽度:3.9 mm
Base Number Matches:1

ADS7843E 数据手册

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®
ADS7843  
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  
converter (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 guaranteed down to 2.7V  
operation.  
PROGRAMMABLE 8- OR 12-BIT RESOLUTION  
2 AUXILIARY ANALOG INPUTS  
FULL POWER-DOWN CONTROL  
Low power, high speed, and on-board switches make  
the ADS7843 ideal for battery operated systems such  
as personal digital assistants with resistive touch screens  
and other portable equipment. The ADS7843 is avail-  
able in a 16-lead SSOP package and is guaranteed  
over the –40°C to +85°C temperature range.  
APPLICATIONS  
PERSONAL DIGITAL ASSISTANTS  
PORTABLE INSTRUMENTS  
POINT-OF-SALES TERMINALS  
PAGERS  
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  
International Airport Industrial Park  
Mailing Address: PO Box 11400, Tucson, AZ 85734  
FAXLine: (800) 548-6133 (US/Canada Only)  
• Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111  
Internet: http://www.burr-brown.com/  
Cable: BBRCORP  
Telex: 066-6491  
FAX: (520) 889-1510  
Immediate Product Info: (800) 548-6132  
©1997 Burr-Brown Corporation  
PDS-1441C  
Printed in U.S.A. June, 1998  

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