The TSC2300 is a highly integrated PDA analog interface circuit. It contains a complete 12-bit A/D resistive
touch screen converter including drivers, touch pressure measurement capability, keypad controller and 8-bit
D/A converter output for LCD contrast control. The TSC2300 offers programmable resolution of 8, 10, and 12 bits
and sampling rates up to 125 kHz to accommodate different screen sizes. The TSC2300 interfaces to the host
controller through a standard SPI serial interface.
The TSC2300 features a high-performance 20-bit,
48-ksps audio codec with highly integrated analog functionality. The audio portion of the TSC2300 contains
microphone input with built-in pre-amp and microphone bias circuit, an auxiliary stereo analog input, a stereo
line-level output, a differential mono line-level output, and a stereo headphone amplifier output. The digital
audio data is transferred through a standard I2S interface.
The TSC2300 also offers two battery measurement
inputs capable of battery voltages up to 6 V, while
operating at a supply voltage of only 2.7 V. It also has an
on-chip temperature sensor capable of reading 0.3°C
resolution. The TSC2300 is available in a 64-lead TQFP.
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