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參數(shù)資料
| 型號： | TSC2302IRGZR |
| 元件分類： | Codec |
| 英文描述： | PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH STEREO AUDIO CODEC |
| 中文描述： | 可編程觸摸屏控制器，立體聲編解碼器 |
| 文件頁數(shù)： | 55/81頁 |
| 文件大?。?/td> | 1211K |
| 代理商： | TSC2302IRGZR |
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www.ti.com
www.ti.com
RRNG
VBIAS
DAC
8-Bits
V+
ARNG
AOUT
R1
R2
T
TSC2302
SLAS394–JULY 2003
OPERATION - D/A CONVERTER
The TSC2302 has an onboard 8-bit DAC, configured as shown in Figure 65. This configuration yields a current
sink (AOUT) controlled by the value of a resistor connected between the ARNG pin and ground. The D/A
converter has a control register, which controls whether or not the converter is powered up. The eight-bit data is
written to the DAC through the DAC data register.
Figure 65. D/A Converter Configuration
This circuit is designed for flexibility in the output voltage at the VBIAS point shown in Figure 65 to accommodate
the widely varying requirements for LCD contrast control bias. V+ can be a higher voltage than the supply
voltage for the TSC2302. The only restriction is that the voltage on the AOUT pin can never go above the
absolute maximum ratings for the device, and should stay above 1.5 V for linear operation.
The DAC has an output sink range which is limited to approximately 1 mA. This range can be adjusted by
changing the value of RRNG shown in Figure 65. As this DAC is not designed to be a precision device, the
actual value of the output current range can vary as much as
±
20%. Furthermore, the current output changes
due to variations in temperature; the DAC has a temperature coefficient of approximately 0.9 uA/
°
C.
To set the full-scale current, RRNG can be determined from the graph shown in Figure 66.
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| TSC2302IRGZRG4 | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/20-Bit Stereo Audio Codec RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| TSC2303IZQZ | 制造商:Texas Instruments 功能描述: |
| TSC2303IZQZR | 制造商:Texas Instruments 功能描述: |
| TSC236 | 制造商:TSC 制造商全稱:Taiwan Semiconductor Company, Ltd 功能描述:High Voltage NPN Transistor |
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