Overview
The ATM90E32AS-AU-R is an enhanced poly-phase high-performance wide-span energy metering IC produced by Microchip Technology. This integrated circuit is designed for precise energy measurement in various electrical systems. It features six independent 2nd order sigma-delta ADCs, which can be used in three voltage channels and three current channels in a typical three-phase four-wire system. The IC includes an embedded DSP that calculates active energy, reactive energy, apparent energy, and other measurement parameters such as voltage and current RMS values and mean power.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Microchip Technology |
| Part Number | ATM90E32AS-AU-R |
| Package Style | TQFP-48 |
| Mounting Method | Surface Mount |
| Interface | SPI (four-wire) |
| Operating Voltage | 1.8V to 3.6V |
| Temperature Range | -40°C to +85°C |
| Accuracy for Active Energy | ±0.1% |
| Accuracy for Reactive Energy | ±0.2% |
| Dynamic Range | 6000:1 |
| Temperature Coefficient for On-chip Reference Voltage | 6 ppm/°C (typ.) |
| Temperature Sensor Accuracy | ±1°C (typ.) |
Key Features
- Incorporates six independent 2nd order sigma-delta ADCs for voltage and current measurements.
- Embedded DSP for calculating active, reactive, and apparent energy, as well as voltage and current RMS values and mean power.
- Automatically temperature compensated.
- Programmable start-up and no-load power thresholds.
- Programmable power modes: normal, idle, detection, and partial measurement mode.
- Current and voltage instantaneous signal monitoring.
- Programmable voltage sag detection and zero-crossing output.
Applications
The ATM90E32AS-AU-R is suitable for various energy metering and power monitoring applications, including:
- Poly-phase energy meters of class 0.2S, 0.5S, and class 1.
- Three-phase four-wire (3P4W, Y0) or three-phase three-wire (3P3W, Y or Δ) systems.
- Power monitoring instruments that need to measure voltage, current, and mean power.
Q & A
- What is the primary function of the ATM90E32AS-AU-R IC?
The primary function is to provide precise energy measurement in poly-phase electrical systems. - What type of ADCs does the ATM90E32AS-AU-R incorporate?
It incorporates six independent 2nd order sigma-delta ADCs. - What is the operating voltage range of the ATM90E32AS-AU-R?
The operating voltage range is from 1.8V to 3.6V. - What is the accuracy of active energy measurement for the ATM90E32AS-AU-R?
The accuracy for active energy measurement is ±0.1%. - What is the temperature range for the ATM90E32AS-AU-R?
The temperature range is from -40°C to +85°C. - Does the ATM90E32AS-AU-R have an embedded DSP?
Yes, it includes an embedded DSP for calculating various energy and power parameters. - What types of power modes are available on the ATM90E32AS-AU-R?
The available power modes are normal, idle, detection, and partial measurement mode. - Can the ATM90E32AS-AU-R detect voltage sag?
Yes, it has programmable voltage sag detection and zero-crossing output. - What is the package style of the ATM90E32AS-AU-R?
The package style is TQFP-48. - What is the mounting method for the ATM90E32AS-AU-R?
The mounting method is surface mount.
