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產(chǎn)品描述
The TCS2046 is a 4-wire resistive touch screen controller that incorporates a 12-bit 125 kHz sampling SAR typeA/D converter.
The operates down to 2.2V supply voltage and supports digital I/O interface voltage from 1.5V to VCCin order to connect low voltage uP.
The TCS2046 can detect the pressed screen location by performing two A/D conversions. In addition to location,the TCS2046 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 TCS2046 also has an on-chip temperature sensor
The TCS2046 is available in 16pin QFN thin package(0.75mm in height) and has the operating temperature range of -40°C to +85°C
主要特點(diǎn)
- 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
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