- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄98303 > TSC2302IRGZRG4 (TEXAS INSTRUMENTS INC) SPECIALTY CONSUMER CIRCUIT, PQCC48 PDF資料下載
參數(shù)資料
| 型號(hào)： | TSC2302IRGZRG4 |
| 廠(chǎng)商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC48 |
| 封裝： | GREEN, PLASTIC, VQFN-48 |
| 文件頁(yè)數(shù)： | 6/85頁(yè) |
| 文件大小： | 1483K |
| 代理商： | TSC2302IRGZRG4 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)當(dāng)前第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)
www.ti.com
Conductive Bar
Transparent Conductor (ITO)
Bottom Side
X+
X–
Y+
Y–
Transparent Conductor (ITO)
Top Side
Insulating Material (Glass)
ITO= Indium Tin Oxide
Silver Ink
R
TOUCH +
R
X–plate
X–position
4096
Z
2
Z
1
* 1
(1)
R
TOUCH +
R
X–plate
X–position
4096
Z
1
* 1 * RY–plate 1 *
Y–position
4096
(2)
TSC2302
SLAS394 – JULY 2003
DETAILED DESCRIPTION (continued)
The TSC2302 supports the resistive 4-wire configuration. The circuit determines the location in two coordinate
pair dimensions, although a third dimension can be added for measuring pressure.
The 4-Wire Touch Screen Coordinate Pair Measurement
A 4-wire touch screen is constructed as shown in Figure 40. It consists of two transparent resistive layers
separated by insulating spacers.
Figure 40. 4-Wire Touch Screen Construction
The 4-wire touch screen panel works by applying a voltage across the vertical or horizontal resistive network.
The ADC converts the voltage measured at the point where the panel is touched. A measurement of the Y
position of the pointing device is made by connecting the X+ input to the ADC input, driving Y+ to +VDD and Y-
to GND using switches internal to the TSC2302, and digitizing the voltage seen at the X+ input. The voltage
measured is determined by the voltage divider developed at the point of touch. For this measurement, the
horizontal panel resistance in the X+ lead does not affect the conversion, due to the high input impedance of the
ADC.
Voltage is then applied to the other axis, and the ADC converts the voltage representing the X position on the
screen. This provides the X and Y coordinates to the associated processor.
Measuring touch pressure (Z) can also be done with the TSC2302. To determine pen or finger touch, the
pressure of the touch needs to be determined. Generally, it is not necessary to have very high performance for
this test, therefore, the 8-bit resolution mode is recommended (however, calculations are shown with the 12-bit
resolution mode). There are several different ways of performing this measurement. The TSC2302 supports two
methods. The first method requires knowing the X-plate resistance, measurement of the X-position, and two
additional cross panel measurements (Z2 and Z1) of the touch screen (see Figure 41). Using Equation 1
calculates the touch resistance:
The second method requires knowing both the X-plate and Y-plate resistance, measurement of X-position and
Y-position, and Z1. Using Equation 2 also calculates the touch resistance:
14
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TSDC4872IJT | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
| TS4872IJT | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
| TSH103ID | 3 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| TSH103IDT | 3 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| TSH120ICT | SPECIALTY CONSUMER CIRCUIT, PDSO6 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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(chēng):Taiwan Semiconductor Company, Ltd 功能描述:High Voltage NPN Transistor |
| TSC236CIC0 | 制造商:TSC 制造商全稱(chēng):Taiwan Semiconductor Company, Ltd 功能描述:High Voltage NPN Transistor |
| TSC236CZ C0 | 功能描述:兩極晶體管 - BJT High voltage NPN Transistor RoHS:否 制造商:STMicroelectronics 配置: 晶體管極性:PNP 集電極—基極電壓 VCBO: 集電極—發(fā)射極最大電壓 VCEO:- 40 V 發(fā)射極 - 基極電壓 VEBO:- 6 V 集電極—射極飽和電壓: 最大直流電集電極電流: 增益帶寬產(chǎn)品fT: 直流集電極/Base Gain hfe Min:100 A 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PowerFLAT 2 x 2 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。