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MAX71020 - Single-Chip Electricity Meter AFE

General Description

The MAX71020 is a single-chip, analog front-end to be used in high-performance revenue meters.

It contains the compute engine found in Maxim’s fourth-generation meter SOC and an improved ADC, and interfaces to the host microcontroller of choice over a SPI interface.

Key Features

  • S 0.1% Accuracy Over 2000:1 Current Range S Exceeds IEC 62053/ANSI C12.20 Standards S Two Differential Current Sensor Inputs S Two Voltage Sensor Inputs S Selectable Gain of 1 or 9 for One Current Input to Support a Shunt S High-Speed Wh/VARh Pulse Outputs with Programmable Width S Up to Four Pulse Outputs with Pulse Count S Four-Quadrant Metering S Digital Temperature Compensation S Independent 32-Bit Compute Engine S 45Hz to 65Hz Line Frequency Range with Same Calibration S Phase C.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-6400; Rev 0; 7/12 MAX71020 Single-Chip Electricity Meter AFE General Description The MAX71020 is a single-chip, analog front-end to be used in high-performance revenue meters. It contains the compute engine found in Maxim’s fourth-generation meter SOC and an improved ADC, and interfaces to the host microcontroller of choice over a SPI interface. The MAX71020 comes in a 28-pin TSSOP package. Features S 0.1% Accuracy Over 2000:1 Current Range S Exceeds IEC 62053/ANSI C12.