MXB7846 Ver la hoja de datos (PDF) - Maxim Integrated

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MXB7846

2.375V to 5.25V, 4-Wire Touch-Screen Controller with Internal Reference and Temperature Sensor

Maxim Integrated 

2.375V to 5.25V, 4-Wire Touch-Screen Controller

with Internal Reference and Temperature Sensor

VDD

VDD

Y+

REF

Y+

+IN REF+

X+

12-BIT ADC

-IN REF-

Y-

GND

Figure 3. Single-Ended Y-Coordinate Measurement

+IN REF+

X+

12-BIT ADC

-IN REF-

Y-

GND

Figure 4. Ratiometric Y-Coordinate Measurement

TOUCH SCREEN

OPEN CIRCUIT

Y+

X+

Y-

ON

+VDD

100kΩ

PENIRQ

Figure 5. PENIRQ Functional Block Diagram

PENIRQ

ENABLE

12 ______________________________________________________________________________________

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