MCP3909RD-1PH1 Microchip Technology, MCP3909RD-1PH1 Datasheet - Page 14

• Manufacturer Part Number: MCP3909RD-1PH1
• Description: BOARD DES MCP3909 ENERGY METER
• Manufacturer: Microchip Technology

Specifications of MCP3909RD-1PH1

• Main Purpose: Power Management, Energy/Power Meter
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP3909, PIC18F85J90
• Primary Attributes: Single Phase Shunt Energy Meter
• Secondary Attributes: 16 Bit ADC
• Ic Function: Single Phase Energy Measurement IC
• Supply Voltage Range: 4.5V To 5.5V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: SSOP
• No. Of Pins: 24
• Interface Type: SPI
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

MCP3909/PIC18F85J90 Single Phase Energy Meter Reference Design
2.2
FIGURE 2-2:
DS51884A-page 14
NEUTRAL
POWER SUPPLY CIRCUIT
LINE
METER IS CONNECTED
(DO NOT USE WHILE
150 FB (Note)
The power supply circuit for the MCP3909/PIC18F85J90 Single Phase Energy Meter
Reference Design uses a half wave rectified signal and a single +5V voltage regulator,
and a 3.3V LDO.
Low-Cost Power Supply Circuit.
+9V DS Power In
TO MAINS!)
A
1 uF
470Ω
1
3
2
A
100 nF
+5V
1uF
B
B
EN
In
Gnd
Gnd
A
B
Out
Out
Byp
© 2009 Microchip Technology Inc.
B
100 nF
100 nF
B
A
100 nF
10 uF
+5V
+3.3V
A
B