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          EEPW首頁 > 工控自動化 > 設(shè)計應(yīng)用 > AK4186設(shè)計的電阻觸摸屏控制方案

          AK4186設(shè)計的電阻觸摸屏控制方案

          作者: 時間:2011-06-29 來源:網(wǎng)絡(luò) 收藏

          本文介紹了主要特性,方框圖,4線和5線典型連接框圖,輸入電路以及AKD4186-A評估板電路圖。

          本文引用地址:http://www.ex-cimer.com/article/161891.htm

          是采用12位SAR ADC的 4線/5線器,具有自動連續(xù)測量和測量數(shù)據(jù)計算功能以及連續(xù)讀出功能,I2C串行接口,取樣速率22.2kHz,工作電壓1.6V-3.6V,1.8V的功耗為60uA,并具有自動關(guān)機功能。主要用在手機,數(shù)碼相機,DVC和智能手機以及其它手提設(shè)備。

          主要特性:

          4-wire or 5-wire Touch Screen Interface

          I2C Serial Interface

          12bit SAR A/D Converter with S/H circuit

          Sampling Rate: 22.2kHz

          Pen Pressure Measurement (4-wire)

          Continuous Read Function

          Integrated Internal Osc (Sequence Mode)

          Integrated Median Averaging Filter

          Low Voltage Operation: VDD = 1.6V ~ 3.6V

          PENIRQN Buffer Output

          Low Power Consumption: 60μA at 1.8V

          Auto Power Down

          Package: 12pin CSP (1.7mm x 1.3mm, pitch 0.4mm)16pin QFN (3mm x 3mm, pitch 0.5mm)

          圖1。AK4186方框圖

          圖2。AK4186典型連接框圖(4線,AK4186ECB)

          圖3。AK4186典型連接框圖(4線,AK4186EN)

          圖4。AK4186典型連接框圖(5線,AK4186ECB)

          圖5。AK4186典型連接框圖(5線,AK4186EN)

          AKD4186-A評估板

          AKD4186-A is the board for evaluation of the touch screen controller AK4186, which adopted the CSP small package suitable for the cellular phone, the handheld game machine. Since AKD4186-A has a touch-screen I/F and a digital I/O power supply input terminal, it is easily connectable with a target system of low power/voltage drive. Furthermore, since the analog input terminal is equipped analog voltage can also be measured.

          圖6。輸入電路

          圖7。AKD4186-A評估板電路圖

          光敏電阻相關(guān)文章:光敏電阻工作原理


          p2p機相關(guān)文章:p2p原理




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