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AD7843ARQZ-REEL

更新时间： 2024-01-25 06:25:51
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管转换器
页数 文件大小 规格书
21页 304K
描述
Touch Screen Digitizer

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AD7843ARQZ-REEL 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SSOP
包装说明：QSOP-16针数：16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：1.79
最大模拟输入电压：3.6 V最小模拟输入电压：
转换器类型：ADC, SUCCESSIVE APPROXIMATIONJESD-30 代码：R-PDSO-G16
JESD-609代码：e3长度：4.9 mm
最大线性误差 (EL)：0.0488%湿度敏感等级：1
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：TSSOP16,.24封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, SHRINK PITCH采样并保持/跟踪并保持：TRACK
座面最大高度：1.7526 mm最大压摆率：0.38 mA
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.635 mm端子位置：DUAL
宽度：3.9116 mm

AD7843ARQZ-REEL 数据手册

 浏览型号AD7843ARQZ-REEL的Datasheet PDF文件第2页浏览型号AD7843ARQZ-REEL的Datasheet PDF文件第3页浏览型号AD7843ARQZ-REEL的Datasheet PDF文件第4页浏览型号AD7843ARQZ-REEL的Datasheet PDF文件第5页浏览型号AD7843ARQZ-REEL的Datasheet PDF文件第6页浏览型号AD7843ARQZ-REEL的Datasheet PDF文件第7页 
Touch Screen Digitizer  
AD7843  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
4-wire touch screen interface  
Specified throughput rate of 125 kSPS  
Low power consumption:  
1.37 mW max at 125 kSPS with VCC = 3.6 V  
Single supply, VCC of 2.2 V to 5.25 V  
Ratiometric conversion  
+V  
PENIRQ  
CC  
PEN  
INTERRUPT  
AD7843  
X+  
X–  
High speed serial interface  
Programmable 8-bit or 12-bit resolution  
2 auxiliary analog inputs  
Y+  
Y–  
T/H  
4-TO-1  
I/P  
MUX  
Shutdown mode: 1 µA max  
16-lead QSOP and TSSOP packages  
IN3  
IN4  
COMP  
V
GND  
REF  
APPLICATIONS  
CHARGE  
Personal digital assistants  
Smart hand-held devices  
Touch screen monitors  
Point-of-sales terminals  
Pagers  
REDISTRIBUTION  
DAC  
+V  
CC  
SAR + ADC  
CONTROL LOGIC  
SPORT  
DIN  
CS  
DOUT  
DCLK  
BUSY  
Figure 1.  
GENERAL DESCRIPTION  
PRODUCT HIGHLIGHTS  
The AD7843 is a 12-bit successive approximation ADC with a  
synchronous serial interface and low on resistance switches for  
driving touch screens. The part operates from a single 2.2 V to  
5.25 V power supply and features throughput rates greater than  
125 kSPS.  
1. Ratiometric conversion mode available eliminating errors  
due to on-board switch resistances.  
2. Maximum current consumption of 380 µA while operating  
at 125 kSPS.  
3. Power-down options available.  
4. Analog input range from 0 V to VREF  
5. Versatile serial I/O port.  
.
The external reference applied to the AD7843 can be varied  
from 1 V to +VCC, while the analog input range is from 0 V to  
VREF. The device includes a shutdown mode that reduces the  
current consumption to less than 1 µA.  
The AD7843 features on-board switches. This, coupled with low  
power and high speed operation, make this device ideal for  
battery-powered systems such as personal digital assistants with  
resistive touch screens, and other portable equipment. The part  
is available in a 16-lead 0.15" quarter size outline package  
(QSOP) and a 16-lead thin shrink small outline package  
(TSSOP).  
Rev. B  
Information furnished by Analog Devices is believed to be accurate and reliable.  
However, no responsibility is assumed by Analog Devices for its use, nor for any  
infringements of patents or other rights of third parties that may result from its use.  
Specifications subject to change without notice. No license is granted by implication  
or otherwise under any patent or patent rights of Analog Devices. Trademarks and  
registered trademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.326.8703  
www.analog.com  
© 2004 Analog Devices, Inc. All rights reserved.  
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