Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：652.83 Kbytes 頁數(shù)：36 Pages

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Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：779.27 Kbytes 頁數(shù)：40 Pages

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Low Voltage Controller for Touch Screens

文件：779.27 Kbytes 頁數(shù)：40 Pages

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用于觸摸屏的低成本控制器

AD7879/AD7889是12位逐次逼近型模數(shù)轉(zhuǎn)換器(SAR ADC)，具有同步串行接口以及用于驅(qū)動4線電阻觸摸屏的低導(dǎo)通電阻開關(guān)。AD7879/AD7889工作電源電壓極低，采用1.6 V至3.6 V單電源供電，吞吐速率為105 kSPS。這些器件具有關(guān)斷模式，此模式下功耗不足6 μA。\n\n 為了降低來自LCD以及其它源的噪聲，AD7879/AD7889內(nèi)置預(yù)處理模塊。預(yù)處理功能包括中值濾波器及均值濾波器。這兩個濾波器的結(jié)合提供了更穩(wěn)定的解決方案，能濾除信號中的雜散噪聲，只保留有用的數(shù)據(jù)。兩個濾波器的尺寸都可以設(shè)置。其它用戶可編程轉(zhuǎn)換控制包括可變采集時間及第一轉(zhuǎn)換延遲。每次轉(zhuǎn) ? 4線觸摸屏接口\n\n? 電源電壓：1.6V～3.6V\n\n? 中值濾波器與均值濾波器，用于降低噪聲\n\n? 自動轉(zhuǎn)換序列器與定時器\n\n? 用戶可編程的轉(zhuǎn)換參數(shù)\n\n? 輔助模擬輸入/電池監(jiān)控器（0.5 V～5 V）;

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Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：779.27 Kbytes 頁數(shù)：40 Pages

AD

亞德諾

Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：652.83 Kbytes 頁數(shù)：36 Pages

AD

亞德諾

Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：652.83 Kbytes 頁數(shù)：36 Pages

AD

亞德諾

Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：779.27 Kbytes 頁數(shù)：40 Pages

AD

亞德諾

Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：652.83 Kbytes 頁數(shù)：36 Pages

AD

亞德諾

Low Voltage Controller for Touch Screens

GENERAL DESCRIPTION The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.

文件：779.27 Kbytes 頁數(shù)：40 Pages

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