ADS7845E

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FEATURES

andnbsp;5-WIRE TOUCH SCREEN INTERFACE

andnbsp;RATIOMETRIC CONVERSION

andnbsp;SINGLE SUPPLY: 2V to 5V

andnbsp;UP TO 125kHz CONVERSION RATE

andnbsp;SERIAL INTERFACE

andnbsp;PROGRAMMABLE 8- OR 12-BIT RESOLUTION

andnbsp;AUXILIARY ANALOG INPUTS

andnbsp;FULL POWER-DOWN CONTROL

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APPLICATIONS

andnbsp;PERSONAL DIGITAL ASSISTANTS

andnbsp;PORTABLE INSTRUMENTS

andnbsp;POINT-OF-SALES TERMINALS

andnbsp;PAGERS

andnbsp;TOUCH-SCREEN MONITORS

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DESCRIPTION

The ADS7845 is a 12-bit sampling analog-to-digital converter (ADC) with a synchronous serial interface and low on-resistance switches for driving touch screens. Typical power dissipation is 750andmicro;W at a 125kHz throughput rate and a +2.7V supply. The reference voltage (VREF ) can be varied between 1V and +VCC , providing a corresponding input voltage range of 0V to VREF . The device includes a shutdown mode which reduces typical power dissipation to under 0.5andmicro;W. The ADS7845 is guaranteed down to 2.7V operation.

Low power, high speed, and on-board switches make the ADS7845 ideal for battery-operated systems such as personal digital assistants with resistive touch screens and other portable equipment. The ADS7845 is avail able in a 16-lead SSOP package and is guaranteed over the andndash;40anddeg;C to +85anddeg;C temperature range.

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INFORMATION

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Drawing

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Our advantage :

• High quality products --- our offers are 100% new and original, ROHS
• Competitive price --- good Purchase channels with good price.
• Professional service --- strict quality testing before the shipment, and perfect after-sales service after the purchase.
• Adequate inventory --- With the support of our strong Purchasing team,
• Fast delivery --- we will ship the goods within 1-3 working days after the payment confirmed.

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be sure to meet your need for all kinds of components. ^_^


Product List
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