參數(shù)資料
型號： TSC2100IDAR
廠商： Texas Instruments, Inc.
元件分類： Codec
英文描述： PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH INTEGRATED STEREO AUDIO CODEC AND HEADPHONE/SPEAKER AMPLIFIER
中文描述： 可編程觸摸屏控制器，它集成立體聲音頻編解碼器和耳機(jī)/揚(yáng)聲器放大器
文件頁數(shù)： 22/71頁
文件大小： 717K
代理商： TSC2100IDAR
SLAS378 NOVEMBER 2003
www.ti.com
22
The TSC2100 offers two modes of temperature measurement. The first mode requires a single reading to predict the
ambient temperature. A diode, as shown in Figure 19, is used during this measurement cycle. This voltage is typically 600
mV at 25
°
C with a 20-
μ
A current through it. The absolute value of this diode voltage can vary a few millivolts. During the
final test of the end product, the diode voltage must be stored at a known temperature. Further calibration can be done to
calculate the precise temperature coefficient of the particular device. This method has a temperature resolution of
approximately 0.3
°
C/LSB and accuracy of approximately 1
°
C.
TEMP0TEMP1
MUX
A/D
Converter
Temperature Select
X+
Figure 19. Functional Block Diagram of Temperature Measurement Mode
The second mode uses a two-measurement (differential) method. This mode requires a second conversion with a current
82 times larger. The voltage difference between the first (TEMP1) and second (TEMP2) conversion, using 82 times the
bias current, is represented by:
kT
q
ln(N)
where:
N is the current ratio = 82
k = Boltzmann’s constant (1.38054
10
23
electrons volts/degrees Kelvin)
q = the electron charge (1.602189
10
19
°
C)
T = the temperature in degrees Kelvin
This method provides resolution of approximately 1.5
°
C/LSB and accuracy of approximately
1
°
C. The equation for the
relation between differential code and temperature may vary slightly from device to device and can be calibrated at final
system test by the user.
1500
1700
1900
2100
2300
2500
2700
40
20
0
Temperature
°
C
20
40
60
80
A
Figure 20. Typical Plot for Single Measurement Method
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TSC2100IDARG4 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/Ster Codec & Hdph/Spk Amp 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
TSC2100IRHB 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/Ster Codec & Hdph/Spk Amp 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
TSC2100IRHBG4 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/Ster Codec & Hdph/Spk Amp 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
TSC2100IRHBR 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/Ster Codec & Hdph/Spk Amp 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
TSC2100IRHBRG4 功能描述:觸摸屏轉(zhuǎn)換器和控制器 Prog 4-Wire w/Ster Codec & Hdph/Spk Amp 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
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