ADS7843EG4 ,4-wire Touch Screen Controller 16-SSOP -40 to 85ELECTRICAL CHARACTERISTICSAt T = –40°C to +85°C, +V = +2.7V, V = +2.5V, f = 125kHz, f = 16 • f = 2M ..
ADS7844 ,12-Bit, 8-Channel Serial Output Sampling ANALOG-TO-DIGITAL CONVERTERMaximum Ratings”may cause permanent damage to the device. Exposure to absolute maximumconditions fo ..
ADS7844E ,12-Bit/ 8-Channel Serial Output Sampling ANALOG-TO-DIGITAL CONVERTERSPECIFICATION: +5VAt T = –40°C to +85°C, +V = +5V, V = +5V, f = 200kHz, and f = 16 • f = 3.2MHz, u ..
ADS7844EB ,12-Bit/ 8-Channel Serial Output Sampling ANALOG-TO-DIGITAL CONVERTERSPECIFICATION: +2.7VAt T = –40°C to +85°C, +V = +2.7V, V = +2.5V, f = 125kHz, and f = 16 • f = 2MH ..
ADS7844EBG4 ,12-Bit, 8-Channel Serial Output Sampling Analog-To-Digital Converter 20-SSOP Maximum Ratings”may cause permanent damage to the device. Exposure to absolute maximumconditions fo ..
ADS7844EG4 ,12-Bit, 8-Channel Serial Output Sampling Analog-To-Digital Converter 20-SSOP SPECIFICATION: +5VAt T = –40°C to +85°C, +V = +5V, V = +5V, f = 200kHz, and f = 16 • f = 3.2MHz, u ..
ALE15B12 , 16A Power Relay For Micro wave oven
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ALF1P12 , 20A Power Relay For Home appliances
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ADS7843E-ADS7843E/2K5G4-ADS7843EG4
4-wire Touch Screen Controller 16-SSOP -40 to 85
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
DESCRIPTIONThe ADS7843 is a 12-bit sampling Analog-to-Digital Con-
verter (ADC) with a synchronous serial interface and low on-
resistance switches for driving touch screens. Typical power
dissipation is 750μW 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
0.5μW. 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 per-
sonal 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°C to +85°C
temperature range.
APPLICA TIONS PERSONAL DIGITAL ASSISTANTS PORTABLE INSTRUMENTS POINT-OF-SALES TERMINALS PAGERS TOUCH SCREEN MONITORS
TOUCH SCREEN CONTROLLERDIN
DOUT
BUSY
DCLK
PENIRQ
IN3
IN4
VREF
+VCC
ADS7843SBAS090B – SEPTEMBER 2000 – REVISED MAY 2002
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
US Patent No. 6246394
