Purchase ADS7843, In-stock ADS7843 From SeekIC.
Package Cooled:100000
Part Number: ADS7843
Package Cooled: 100000
Description: The ADS7843 is a 12-bit sampling Analog-to-Digital Converter (ADC) with a synchronous serial interface...
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ADS7843
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Suppliers
DataSheet
General Description
ADS7843 General Description
The ADS7843 is a 12-bit sampling Analog-to-Digital Converter (ADC) with a synchronous serial interface and low onresistance switches for driving touch screens. Typical power dissipation is 750W 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 0.5W. The ADS7843 is specified down to 2.7V operation.
Low power, high speed, and onboard switches make the ADS7843 ideal for battery-operated systems such as personal digital assistants with resistive touch screens and other portable equipment. The ADS7843 is available in an SSOP-16 package and is specified over the 40 to +85 temperature range.
ADS7843 Maximum Ratings
+VCC to GND ............................................................................................................. 0.3V to +6V
Analog Inputs to GND .................................................................................. 0.3V to +VCC + 0.3V
Digital Inputs to GND ................................................................................... 0.3V to +VCC + 0.3V
Power Dissipation .............................................................................................................. 250mW
Maximum Junction Temperature .......................................................................................... +150
Operating Temperature Range .............................................................................. 40 to +85
Storage Temperature Range ............................................................................... 65 to +150
Lead Temperature (soldering, 10s) .................................................................................... +300
Analog Inputs to GND .................................................................................. 0.3V to +VCC + 0.3V
Digital Inputs to GND ................................................................................... 0.3V to +VCC + 0.3V
Power Dissipation .............................................................................................................. 250mW
Maximum Junction Temperature .......................................................................................... +150
Operating Temperature Range .............................................................................. 40 to +85
Storage Temperature Range ............................................................................... 65 to +150
Lead Temperature (soldering, 10s) .................................................................................... +300
ADS7843 Features
4-WIRE TOUCH SCREEN INTERFACE
RATIOMETRIC CONVERSION
SINGLE SUPPLY: 2.7V to 5V
UP TO 125kHz CONVERSION RATE
SERIAL INTERFACE
PROGRAMMABLE 8- OR 12-BIT RESOLUTION
2 AUXILIARY ANALOG INPUTS
FULL POWER-DOWN CONTROL
RATIOMETRIC CONVERSION
SINGLE SUPPLY: 2.7V to 5V
UP TO 125kHz CONVERSION RATE
SERIAL INTERFACE
PROGRAMMABLE 8- OR 12-BIT RESOLUTION
2 AUXILIARY ANALOG INPUTS
FULL POWER-DOWN CONTROL
ADS7843 Typical Application
PERSONAL DIGITAL ASSISTANTS
PORTABLE INSTRUMENTS
POINT-OF-SALES TERMINALS
PAGERS
TOUCH SCREEN MONITORS
PORTABLE INSTRUMENTS
POINT-OF-SALES TERMINALS
PAGERS
TOUCH SCREEN MONITORS
ADS7843 Connection Diagram
ADS7843
PDF/DataSheet Download
- Datasheet: ADS7843
- File Size: 215149 KB
- Manufacturer: Texas Instruments
- Click here to Download
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