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參數資料
| 型號： | TSC2003IPWRQ1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO16 |
| 封裝： | GREEN, PLASTIC, TSSOP-16 |
| 文件頁數： | 6/28頁 |
| 文件大?。?/td> | 560K |
| 代理商： | TSC2003IPWRQ1 |
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Converter
+IN
+REF
Y+
+V
DD
V
REF
X+
Y–
GND
–REF
–IN
Converter
+IN
+REF
Y+
+V
DD
X+
Y–
GND
–REF
–IN
SBAS454 – DECEMBER 2008 ........................................................................................................................................................................................... www.ti.com
Figure 6. Simplified Diagram of Single-Ended Reference
This situation is remedied, as shown in Figure 7, by using the differential mode: the +REF and –REF inputs are
connected directly to Y+ and Y–, respectively. This makes the ADC ratiometric. The result of the conversion is
always a percentage of the external reference, regardless of how it changes in relation to the on-resistance of
the internal switches.
Figure 7. Simplified Diagram of Differential Reference (Y Switches Enabled, X+ is Analog Input)
Differential reference mode always uses the supply voltage, through the drivers, as the reference voltage for the
ADC. VREF cannot be used as the reference voltage in differential mode.
It is possible to use a high-precision reference on VREF in single-ended reference mode for measurements which
do not need to be ratiometric (i.e., battery voltage, temperature measurement, etc.). In some cases, it could be
possible to power the converter directly from a precision reference. Most references can provide enough power
for the TSC2003, but they might not be able to supply enough current for the external load, such as a resistive
touch screen.
14
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TSC2003-Q1
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PDF描述 |
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| TSC2003IZQCT | 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PBGA48 |
| TSC2003IPWT | 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| TSC2003I | 3-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| TSC2003IR | 3-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| TSC2008IRGVR | SPECIALTY CONSUMER CIRCUIT, PQCC16 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TSC2003IR | 功能描述:IC TOUCH SCREEN CNTRLLR 16-TSSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 觸摸屏控制器 系列:- 標準包裝:96 系列:- 類型:- 觸摸面板接口:- 輸入數/鍵:- 分辨率（位）:- 評估套件:* 數據接口:- 數據速率/采樣率 (SPS，BPS):- 電壓基準:- 電源電壓:- 電流 - 電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| TSC2003IZQCR | 功能描述:觸摸屏轉換器和控制器 4-wire Touch Screen Controller RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率: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 |
| TSC2003-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:I2C TOUCH SCREEN CONTROLLER |
| TSC2004 | 制造商:BB 制造商全稱:BB 功能描述:1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire TOUCH SCREEN CONTROLLER with I2C⑩ Interface |
| TSC2004_12 | 制造商:BB 制造商全稱:BB 功能描述:1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire |
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