参数资料
型号: MCP2036T-I/SL
厂商: Microchip Technology
文件页数: 28/30页
文件大小: 0K
描述: IC KEYLESS ENTRY AFE 14-SOIC
标准包装: 2,600
类型: 传感器接口
应用: 模拟 I/O
安装类型: 表面贴装
封装/外壳: 14-SOIC(0.154",3.90mm 宽)
供应商设备封装: 14-SOIC
包装: 带卷 (TR)
2009 Microchip Technology Inc.
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
10
Ω
10nF
REFSEL
10nF
I/O
0
1
2
3
0
1
3
2
CD4052
Key Coils
PIC Microcontroller
LREF
MCP2036
LBTN
LREF
DRVOUT
REFSEL
I/O
10
Ω
10nF
I/O
10nF
4K7
PIC Microcontroller
I/O
4K7
Key Coils
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