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參數(shù)資料
型號(hào)： TSC2100IDAR
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PDSO32
封裝： GREEN, PLASTIC, TSSOP-32
文件頁(yè)數(shù)： 15/77頁(yè)
文件大小： 1079K
代理商： TSC2100IDAR
TSC2100
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-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.
TEMP0 TEMP1
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 1023 electrons volts/degrees Kelvin)
q = the electron charge (1.602189 1019 °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
2040
6080
ADC
Code
Temperature °C
Figure 20. Typical Plot for Single Measurement Method
相關(guān)PDF資料
PDF描述
TSC2100IDA SPECIALTY CONSUMER CIRCUIT, PDSO32
TSC2100IRHBR SPECIALTY CONSUMER CIRCUIT, PQCC32
TSC2100IRHB SPECIALTY CONSUMER CIRCUIT, PQCC32
TSC2100IDAG4 SPECIALTY CONSUMER CIRCUIT, PDSO32
TSC2100IRHBG4 SPECIALTY CONSUMER CIRCUIT, PQCC32
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(lèi)型:Resistive Touch Controllers 輸入類(lèi)型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類(lèi)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(lèi)型:Resistive Touch Controllers 輸入類(lèi)型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類(lèi)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(lèi)型:Resistive Touch Controllers 輸入類(lèi)型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類(lèi)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(lèi)型:Resistive Touch Controllers 輸入類(lèi)型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類(lèi)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(lèi)型:Resistive Touch Controllers 輸入類(lèi)型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類(lèi)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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