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| 型号： | MCP3907T-I/SS |
| 厂商： | Microchip Technology |
| 文件页数： | 12/24页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METER W/OSC 24SSOP |
| 标准包装： | 1 |
| 系列： | * |
MCP3907 Energy Meter Reference Design
2.2
FEATURES
The MCP3907 Energy Meter Reference Design has the following features:
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Protection for IEC62053-21 Energy Meter EMC Immunity Tests
On-board DC power supply
Resistor divider circuit for single-point meter calibration
Connections for current sensing shunt or other current sensing element
Connection for voltage sensing and power supply biasing
Connections for mechanical counter and calibration output
Low noise PCB layout for small signal conversion, and IEC accuracy compliance
for small shunt values
? Low cost design
2.3
GETTING STARTED
The MCP3907 Energy Meter Reference Design is a complete stand-alone energy
meter compliant to IEC62053-21, IEC1036 and other legacy IEC energy meter
specifications. This meter can be manufactured by performing the two steps detailed in
this document. For the external connections, the following terms are used:
? “Phase” – refers to the hot or line side of the power supply lines
? “Neutral” – refers to the return wire or low side of the power supply lines
2.3.1
Step 1: External Connections
Connections are made to the phase and neutral wire for voltage detection and AC/DC
power supply. The MCP3907 Energy Meter Reference Design is designed to be biased
to the phase or hot side of a 2-wire power supply system.
Step 1a – Connect JP4 to the phase power supply line connection
Step 1b – Connect JP3 to the neutral line
Step 1c – Connect JP1 and JP2 across the shunt
Step 1d – Connect JP5 and JP6 to the mechanical counter
DS51917A-page 12
? 2010 Microchip Technology Inc.
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