XPT2046 اورجینال - کیفیت بالا

نقد و بررسی اجمالی

آی سی کنترلر تاچ اسکرین پکیج VFBGA-16 ،صفحه لمسی مقاومتی با نمونه گیری 125 کیو هرتز با مبدل داخلی 12 بیت Touch Screen Controller

 دریافت دیتا شیت

General Description

The XPT2046 is a 4-wire resistive touch screen controller that incorporates a 12-bit 125 kHz sampling SAR type A/D converter. The XPT2046 operates down to 2.2V supply voltage and supports digital I/O interface voltage from 1.5V to VCC in order to connect low voltage uP. The XPT2046 can detect the pressed screen location by performing two A/D conversions. In addition to location, the XPT2046 also measures touch screen pressure.On-chip VREF can be utilized for analog auxiliary input, temperature measurement and battery monitoring withthe ability to measure voltage from 0V to 5V. The XPT2046 also has an on-chip temperature sensor The XPT2046 is available in 16pin QFN thin package(0.75mm in height) and has the operating temperature range of -40°C to +85°C

Features

12 bit SAR type A/D converter with S/H circuit

(Low voltage operation (VCC = 2.2V ∼ 3.6V

(Low voltage digital I/F (1.5V ∼ VCC

4-wire I/F

(Sampling frequency: 125 kHz (max

(On-Chip voltage reference (2.5V

Pen pressure measurement

On-chip thermo sensor

Direct battery masurement

(Low power consumption (260μA

Package 16pin QFN

Applications

 Personal digital assistants

 Portable instruments

Point -of-sale terminals

Pagers

Touch screen monitors

 Cellular phones