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TSC2302IRGZ

更新时间： 2024-11-26 22:11:59
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页数 文件大小 规格书
81页 1193K
描述
PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH STEREO AUDIO CODEC

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TSC2302IRGZ 数据手册

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TSC2302  
SLAS394–JULY 2003  
PROGRAMMABLE TOUCH SCREEN CONTROLLER  
WITH STEREO AUDIO CODEC  
FEATURES  
APPLICATIONS  
•
•
SPI™ Serial Interface  
Touch Screen Controller  
– 4-Wire Touch Screen Interface  
– Internal Detection of Screen Touch  
– Touch Pressure Measurement  
– Ratiometric Conversion  
•
•
•
•
•
Personal Digital Assistants  
Cellular Phones  
MP3 Players  
Internet Appliances  
Smartphones  
– Programmable 8-, 10- or 12-Bit Resolution  
– Programmable Sampling Rates Up to  
125 kHz  
– Direct Battery Measurement (0 to 6 V)  
– On-Chip Temperature Measurement  
– Integrated Touch Screen Processor  
Reduces Host CPU Interrupts and Overhead  
– Internal Timing Control With Programmable  
Delays and Averaging  
DESCRIPTION  
The TSC2302 is a highly integrated PDA analog  
interface circuit. It contains a complete 12-bit A/D  
resistive touch screen converter (ADC) including  
drivers, touch pressure measurement capability, and  
8-bit D/A converter (DAC) output for LCD contrast  
control. The TSC2302 offers programmable resolution  
of 8, 10, and 12 bits and sampling rates up to 125 kHz  
to accommodate different screen sizes. The TSC2302  
interfaces to the host controller through a standard SPI  
serial interface.  
•
Stereo Audio Codec  
– 20-Bit Delta-Sigma ADC/DAC  
– Dynamic Range: 98 dB  
– Sampling Rate Up to 48 kHz  
– I2S Serial Interface  
The TSC2302 features a high-performance 20-bit,  
48-ksps stereo audio codec with highly integrated  
analog functionality. The audio portion of the TSC2302  
contains microphone input with built-in pre-amp and  
microphone bias circuit, an auxiliary stereo analog  
– Stereo 16-Ω Headphone Driver  
•
•
•
•
Full Power-Down Control  
8-Bit Current Output DAC  
On-Chip Crystal Oscillator  
Programmable Bass/ Midrange/ Treble EQ  
Effects Processing  
input,  
a mono line-level output, and a stereo  
headphone amplifier output. The digital audio data is  
transferred through a standard I2S interface. A fully  
programmable PLL for generating audio clocks from a  
wide variety of system clocks is also included.  
•
•
Single 2.7-V to 3.6-V Supply  
48-pin QFN Package  
The TSC2302 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 TSC2302 is available in a  
48-lead QFN.  
US Patent No. 6246394  
SPI is a trademark of Motorola.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments  
semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily in-  
cludetestingofallparameters.  
Copyright © 2003, Texas Instruments Incorporated  
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