参数资料
| 型号： | MCP2036-I/SL |
| 厂商： | Microchip Technology |
| 文件页数： | 23/30页 |
| 文件大小： | 0K |
| 描述： | IC KEYLESS ENTRY AFE 14-SOIC |
| 标准包装： | 57 |
| 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： | 管件 |
| 产品目录页面： | 684 (CN2011-ZH PDF) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页当前第23页第24页第25页第26页第27页第28页第29页第30页
2009 Microchip Technology Inc.
DS22186B-page 3
MCP2036
FIGURE 1-2:
MCP2036 Typical Application
The coil voltages are then multiplexed into the
Synchronous Detector section by the LBTN/LREF
multiplexer. This allows the microcontroller to select
which signal is sampled by the detector. The detector
converts the coil voltages into a DC level using a
frequency mixer, amplifier, and filter.
The mixer is composed of two switches driven by the
clock present on the CLK signal input. The switches
toggle the amplifier/filter between an inverting and
non-inverting topology, at a rate equal to the clock input
frequency. This inverts and amplifies the negative side
of the signal, while amplifying the positive side. The
result is a pulsed DC signal with a peak voltage,
proportional to the amplitude of the AC coil voltage.
The gain of the detector is set by two pairs of resistors;
one pair are the internal fixed series resistors between
the frequency mixer and the amplifier. The second
resistor pair are the two external gain set resistors
(RGAIN). The two capacitors (CFILTER) in parallel with
the external gain setting resistors form a low pass filter
which converts the pulsed DC output signal into a
smooth DC voltage which is proportional to the AC
sensor voltage input. The output of the system is
present on the VDETOUT pin, which drives the
microcontroller’s ADC input for conversion into a digital
value.
The virtual ground reference for the detector/amplifier
is generated by a second internal op amp which
produces a virtual ground equal to the supply
voltage. The virtual ground is available externally at the
VREF output and used internally throughout the
detector circuit, allowing single supply operation. A
small external capacitance is required to stabilize this
output and limit noise.
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
CS
I/O
VDET-
VDETOUT
VDET+
VREF
CLK
DRVIN
PWM
ADC
CFILTER
RGAIN
CRGND
RIN
CIN
RADC
CADC
相关PDF资料 |
PDF描述 |
|---|---|
| LFXP6E-3TN144I | IC FPGA 5.8KLUTS 144TQFP |
| AT88SC018-SU-CM-T | IC CRYPTOCOMPANION RF/MEM 8SOIC |
| LFXP6E-4TN144C | IC FPGA 5.8KLUTS 100I/O 144-TQFP |
| ACB66DHFT-S621 | EDGECARD 132POS SMD W/O POST |
| LFXP6C-4TN144C | IC FPGA 5.8KLUTS 100I/O 144-TQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP2036T-I/MG | 功能描述:电容触摸传感器 Inductive Sensor AFE RoHS:否 制造商:Microchip Technology 电源电压: 通道数量: 封装 / 箱体: 尺寸: 温度范围: |
| MCP2036T-I/ML | 功能描述:电容触摸传感器 Inductive Sensor Ana Front End RoHS:否 制造商:Microchip Technology 电源电压: 通道数量: 封装 / 箱体: 尺寸: 温度范围: |
| MCP2036T-I/SL | 功能描述:电信线路管理 IC Inductive Sensor AFE RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray |
| MCP2050-330E/MQ | 功能描述:LIN 收发器 LIN Transceiver + 3.3V LDO + WWDT RoHS:否 制造商:NXP Semiconductors 工作电源电压: 电源电流: 最大工作温度: 封装 / 箱体:SO-8 |
| MCP2050-330E/SL | 功能描述:LIN 收发器 LIN Transceiver + 3.3V LDO + WWDT RoHS:否 制造商:NXP Semiconductors 工作电源电压: 电源电流: 最大工作温度: 封装 / 箱体:SO-8 |
发布紧急采购，3分钟左右您将得到回复。