MCP3901A0-E/SS Microchip Technology, MCP3901A0-E/SS Datasheet - Page 14

• Manufacturer Part Number: MCP3901A0-E/SS
• Description: IC ENERGY METER AFE 2CH 20-SSOP
• Manufacturer: Microchip Technology

Specifications of MCP3901A0-E/SS

• Number Of Bits: 24
• Number Of Channels: 2
• Power (watts): 10mW
• Voltage - Supply, Analog: 4.5 V ~ 5.5 V
• Voltage - Supply, Digital: 2.7 V ~ 5.5 V
• Package / Case: 20-SSOP (0.200", 5.30mm Width)
• Ic Function: Analog Front End Device 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: 20
• No. Of Channels: 2
• Input Voltage: 2.2 V to 2.6 V
• Mounting Style: SMD/SMT
• Supply Voltage Max: 5.5V
• Rohs Compliant: Yes
• Interface Type: SPI
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FIGURE 2-4:
DS51915A-page 14
2.1.4
A 50 Hz line frequency is used, which is the typical frequency most of the time. How-
ever, this is not a constant and can vary above or below this value by a few Hertz. This
line frequency shift can cause measurement errors because of the characteristics of
the Sinc filter at low sampling speeds. The Sinc filter transfer function is similar to a
low-pass filter. Depending on the sampling speed of the ADC, this low-pass filter can
be narrower or wider.
Figure 2-4 shows the following line frequency situations:
• 880 sps (as in this meter)
• 1200 sps
• 3200 sps
Sinc Filters Transfer Functions.
Line Frequency Compensation
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