MCP2036-ESLASHP datasheet(7/30 Pages) MICROCHIP

tên linh kiện	MCP2036-E/P

Giải thích chi tiết về linh kiện	Inductive Sensor Analog Front End Device

PDF	30 Pages

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nhà sản xuất	MICROCHIP [Microchip Technology]

Trang chủ	http://www.microchip.com

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DS22186B-page 7

MCP2036

3.0

APPLICATIONS

The MCP2036 is an Analog Front End device that uses

the electromagnetic interaction between a conductive

target and a sensing coil to detect the pressure applied

by the user on the surface of a touch panel. The device

incorporates all analog blocks for a simple inductor

impedance measurement circuit.

For an inductive touch system, two methods are used

for switching the driver and measurement circuitry

between the different sensor coils: analog multiplexers

and GPIO grounding (see Figure 3-1 and Figure 3-2).

The MCP2036 is designed to work with both

configurations:

FIGURE 3-1:

Using Analog-Multiplexer for Key Selection (Example)

MCP2036

LREF

LBTN

LREF

DRVOUT

10nF

REFSEL

10nF

I/O

CD4052

Key Coils

PIC® Microcontroller

LREF

MCP2036

LBTN

LREF

DRVOUT

REFSEL

I/O

10nF

I/O

10nF

4K7

PIC® Microcontroller

I/O

4K7

Key Coils

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