TSC2200 Texas instruments

TSC2200

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TSC2200

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Описание

The TSC2200 is a complete PDA analog interface circuit. It contains a complete 12-bit, Analog-to-Digital (A/D) resistive touch screen converter including drivers, the control to measure touch pressure, keyboard controller, and an 8-bit Digital-to-Analog (D/A) converter output for LCD contrast control. The TSC2200 interfaces to the host controller through a standard SPI serial interface. The TSC2200 offers programmable resolution and sampling rates from 8- to 12-bits and up to 125kHz to accommodate different screen sizes. The TSC2200 also offers two battery-measurement inputs capable of reading battery voltages up to 6V, while operating at only 2.7V. It also has an on-chip temperature sensor capable of reading 0.3°C resolution. The TSC2200 is available in a TSSOP-28 and a QFN-32 package.

4-WIRE TOUCH SCREEN INTERFACE AND 4-BY-4 KEYPAD INTERFACE
RATIOMETRIC CONVERSION
SINGLE 2.7V TO 3.6V SUPPLY
SERIAL INTERFACE
INTERNAL DETECTION OF SCREEN TOUCH AND KEYPAD
PROGRAMMABLE 8-,10-,OR 12-BIT RESOLUTION
PROGRAMMABLE SAMPLING RATES
DIRECT BATTERY MEASUREMENT (0.5V to 6V)
ON-CHIP TEMPERATURE MEASUREMENT
TOUCH-PRESSURE MEASUREMENT
FULL POWER-DOWN CONTROL
TSSOP-28 PACKAGE AND QFN-32 PACKAGES
APPLICATIONS
- PERSONAL DIGITAL ASSISTANTS
- CELLULAR PHONES
- MP3 PLAYERS

SPI is a registered trademark of Motorola.
US Patent No. 624639.

SAR ADC resolution (Bits)	12
SAR sample rate (max) (ksps)	125
Touch panel	4-Wire
Control interface	SPI
Vref (int/ext)	Internal
Rating	Catalog
Operating temperature range (°C)	-40 to 85
Analog supply (min) (V)	2.7
Analog supply (max) (V)	3.6
I/O supply voltage (min) (V)	4.5
I/O supply voltage (max) (V)	26
Input type	Single-ended