MAXQ3183-RAN+

Analog Front End (AFE) Overview

The MAXQ3183-RAN+ is a low-power, multifunction polyphase analog front-end (AFE) designed for electricity metering applications. It integrates an 8-channel high-precision ADC to measure up to seven external differential signal pairs and one die temperature channel. An internal amplifier automatically adjusts current channel gain for low-current signals. The device features an on-chip digital signal processor (DSP) that calculates active, reactive, and apparent power/energy, harmonics, and power factor. Data is retrieved via an SPI interface. It operates on a single 3.3V supply with typical power consumption of 35mW.

Analog Front End (AFE) Feature Summary

• Integrates 8-channel ADC with automatic current gain adjustment
• On-chip DSP for calculating power, energy, harmonics, and phase angles
• Supports 3-phase/3-wire and 3-phase/4-wire configurations
• Includes programmable pulse outputs and tamper detection thresholds

Analog Front End (AFE) Applications

• 3-Phase Multifunction Electricity Meters

Analog Front End (AFE) Procurement Notes

Verify the ordering suffix '+', which indicates a lead-free and RoHS-compliant package configuration. Confirm the pin count and package type match the design requirements, as the standard variant utilizes a 28-pin TSSOP enclosure.

Analog Front End (AFE) Selection Notes

Select this component when polyphase metering requires integrated harmonic analysis and power quality monitoring. Ensure the host system supports the required SPI communication protocol and provides a stable 3.3V digital supply voltage alongside the analog reference.

Analog Front End (AFE) Part Context

This part belongs to the MAXQ318x family of polyphase AFEs from Analog Devices Inc./Maxim Integrated. It serves as a dedicated measurement front-end, distinct from general-purpose microcontrollers, focusing specifically on high-accuracy electrical parameter calculation and data acquisition.

Analog Front End (AFE) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.