参数资料
| 型号： | AC164142 |
| 厂商： | Microchip Technology |
| 文件页数： | 18/38页 |
| 文件大小： | 0K |
| 描述： | BOARD DAUGHTER PWR LINE MODEM |
| 特色产品： | AC164142 PICtail? Plus Daughter Board |
| 标准包装： | 1 |
| 系列： | PICtail™ Plus |
| 主要目的： | 接口，电源线路收发器 |
| 嵌入式： | 否 |
| 主要属性： | AC 电源线收发器，BPSK 7.2 Kbps |
| 次要属性： | 需要 Explorer 16 板 |
| 已供物品： | 2 板，线缆，文档 |
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Consumer-band BPSK 7.2 kbps PLM PICtail? Plus Daughter Board User’s Guide
2.2.2
Transmit Amplifier (U1A)
The transmit amplifier is used to implement flow control on the transmit path.
2.2.3
Output Transistors (T5, T6)
Output transistors are implemented in the push-pull configuration to amplify the
transmit signal before coupling the signal into the HV adapter cable.
Note:
2.2.4
The output transistors should have good thermal contact with a large
copper plane on the PCB to dissipate heat.
RCA Connector (CON1)
The RCA connector is used to connect the daughter board to the HV adapter cable.
2.2.5
HiZ Select Jumper (JP2)
This jumper is used to select the dsPIC33F DSC device pin used for switching the
transmit amplifier. Changing this jumper setting will require appropriate changes in the
software. See Figure A-5 for the schematic of the jumper connections.
2.2.6
ADC Input Select Jumper (JP3)
This jumper is used to select the dsPIC33F DSC device analog pin required to sample
the received signal from the power line. Changing this jumper setting will require
appropriate changes in the software. See Figure A-5 for the schematic of the jumper
connections.
2.2.7
Tuned Amplifier Transistor (T9)
This transistor configured in the common-emitter configuration is used to implement a
tuned amplifier on the receive path.
2.2.8
Receive Band-pass Filter (U2A, U2B)
This 2-stage band-pass filter provides high gain to the received signal while filtering
out power line noises and interference signals. The circuit is essentially a high-pass
filter with a very high gain. The gain bandwidth product limits the higher frequencies
(low-pass response), thereby resulting in a band-pass filter.
2.2.9
Transient Voltage Suppressor (D7)
The transient voltage suppressor is used to protect the daughter board from high
voltage transients on the power line.
2.2.10
Explorer 16 Development Board PICtail? Connector (CON2)
The daughter board connects to the Explorer 16 Development Board using edge
connector J3. The daughter board uses the following signals on the Explorer 16
Development Board PICtail Plus connector:
?
?
?
?
?
?
?
+3.3V power
+5V power
+9V power
Ground
dsPIC33F DSC device Output Compare module signals (OC1-OC4)
dsPIC33F DSC device ADC module input signals (AN8/AN9/AN16/AN17)
One GPIO for HiZ signal (RG0/RG1/RF0/RF1).
DS70656A-page 18
Note:
The source code provided on the Microchip website uses the AN8 pin for
ADC input and the RF0 pin for the HiZ signal. Please ensure that jumpers
JP2 and JP3 are populated according to this configuration. Using other
jumper configurations will require suitable modifications in the source code.
? 2011 Microchip Technology Inc.
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