(Hong Kong)
Product Summary
The XPT2046 is a 4-wire resistive touch screen controller that incorporates a 12-bit 125 kHz sampling SAR type A/D converter. The device 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 device is available in 16pin QFN thin package(0.75mm in height) and has the operating temperature range of -40℃ to +85℃. The XPT2046 is suitable for Personal digital assistants, Portable instruments, Point -of-sale terminals, Pagers, Touch screen monitors and Cellular phones.
Parametrics
XPT2046 absolute maximum ratings: (1)+VCC and IOVDD to GND: -0.3V to +6V; (2)Analog Inputs to GND: -0.3V to +VCC + 0.3V; (3)Digital Inputs to GND: -0.3V to IOVDD + 0.3V; (4)Power Dissipation: 250mW; (5)Maximum Junction Temperature: +150℃; (6)Operating Temperature Range: -40 to +85℃; (7)Storage Temperature Range: -65 to +150℃; (8)Lead Temperature (soldering, 10s): +300℃.
Features
XPT2046 features: (1)12 bit SAR type A/D converter with S/H circuit; (2)Low voltage operation (VCC = 2.2V ～ 3.6V); (3)Low voltage digital I/F (1.5V ～ VCC); (4)4-wire I/F; (5)Sampling frequency: 125 kHz (max); (6)On-Chip voltage reference (2.5V); (7)Pen pressure measurement; (8)On-chip thermo sensor; (9)Direct battery masurement; (10)Low power consumption (260μA); (11)Package 16pin QFN.
Diagrams
