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AK4181A PDF预览

AK4181A

更新时间: 2024-11-17 21:53:35
品牌 Logo 应用领域
AKM 控制器
页数 文件大小 规格书
17页 188K
描述
TOUCH SCREEN CONTROLLER

AK4181A 数据手册

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ASAHI KASEI  
[AK4181A]  
Touch Screen Controller  
AK4181A  
General Description:  
Features:  
The AK4181A is a 4-wire touch screen controller that  
incorporates a 12-bit 125kHz sampling SAR A/D converter.  
The AK4181A can detect the pressed screen location by  
performing two A/D conversions. In addition to location, the  
AK4181A also measures touch screen pressure.  
On-chip VREF can be utilized for two analog auxiliary  
inputs and battery monitoring, with the ability to measure  
voltages from 0V to 5V.  
„ Sampling Frequency: 125kHz(max)  
„ Pen Pressure Measurement  
„ On-Chip Thermo Sensor  
„ Two Auxiliary Analog Inputs  
„ Direct Battery Measurement  
„ 4-wire I/F  
„ On-Chip Voltage Reference (2.5V)  
„ 12 bit SAR type A/D Converter with S/H circuit  
„ Low Power Consumption (250µA)  
„ Low Voltage Operation (2.7V - 3.6V)  
The AK4181A also has an on-chip temperature sensor.  
„ Package  
16pin TSSOP  
DCLK  
CSN  
XP  
YP  
XN  
DIN  
Control  
Logic  
DOUT  
YN  
BUSY  
VREF  
IN1  
Internal VREF(2.5V)  
IN2  
VBAT  
R1  
R2  
VREF+  
AIN+  
VREF-  
12bit  
ADC  
(SAR type)  
AIN-  
PENIRQN  
PEN  
INTERRUPT  
Temp.  
Sensor  
VCC  
GND  
Block Diagram  
MS0313-E-00  
1
2004/06  

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