MCP3909EV-MCU16 Microchip Technology, MCP3909EV-MCU16 Datasheet - Page 90

• Manufacturer Part Number: MCP3909EV-MCU16
• Description: EVALUATION BOARD FOR MCP3909
• Manufacturer: Microchip Technology

Specifications of MCP3909EV-MCU16

• Number Of Adc's: 2
• Number Of Bits: 16
• Sampling Rate (per Second): 15k
• Data Interface: Serial
• Inputs Per Adc: 1 Differential
• Input Range: ±1 V
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: MCP3909
• Silicon Manufacturer: Microchip
• Application Sub Type: ADC
• Kit Application Type: Data Converter
• Silicon Core Number: MCP3909
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MCP3909 / dsPIC33F 3-Phase Energy Meter Reference Design
DS51723A-page 90
minimal (<0.01%). When the input frequency deviates from the multiple of cycle
frequencies, the calculation error increases rapidly. As the calculation error is related
to the frequency offset to the multiple of freqency point, the calculation error caused by
frequency offset can be corrected. Figure C-6 is the error analysis after frequency off-
set correction using simple parabolic interpolation. Calcultion errors for all parameters
are shown to be less than 0.015% after the correction.
FIGURE C-5:
Iterations.
FIGURE C-6:
Compensation.
Error Analysis Of Improved Quasi-sync Calculation Using 3
Calculation Error Analysis After The Frequency Offset
© 2009 Microchip Technology Inc.