Overview
The ADE7912ARIZ-RL is a 3-channel, isolated, sigma-delta Analog-to-Digital Converter (ADC) designed by Analog Devices Inc. for polyphase energy metering applications. It utilizes shunt current sensors and features data and power isolation based on Analog Devices' iCoupler® technology. The device includes one channel for measuring the voltage across a shunt and up to two additional channels for measuring voltages typically sensed using resistor dividers. One of the voltage channels can also measure the temperature of the die via an internal sensor. The ADE7912ARIZ-RL is well-suited for various applications requiring high accuracy and isolation, such as shunt-based polyphase meters, power quality monitoring, and industrial PLCs.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 24 bits |
| Signal Type | Pseudo Differential, Single Ended |
| Number of Channels | 3 |
| Voltage Supply | Single Supply (2.97V to 3.63V) |
| Package Type | 20-lead Wide Body SOIC |
| Operating Temperature | -40°C to +85°C |
| Data Interface | 4-wire SPI serial interface |
| Signal-to-Noise Ratio (SNR) | 67dBFS (ADC-FREQ=8KHz, BW=3300Hz, VDD=3.3V ± 10%, TA=25°C typ) |
| ADC Offset Drift over Temperature | ±200ppm/°C (V1 channel only, VDD=3.3V ± 10%, TA=25°C typ) |
| Signal Voltage Range | −31.25 to 31.25mV peak (IM pin connected to GNDISO) |
Key Features
- Integrated isoPower, isolated dc-to-dc converter
- On-chip temperature sensor
- 4-wire SPI serial interface
- Pseudo differential signal voltage range from −31.25 to 31.25mV peak
- Signal-to-noise ratio (SNR) of 67dBFS
- ADC offset drift over temperature of ±200ppm/°C (V1 channel only)
- 20-lead wide body SOIC package
- Temperature rating range from -40°C to +85°C
Applications
- Shunt-based polyphase meters
- Power quality monitoring
- Solar inverters
- Process monitoring
- Protective devices
- Isolated sensor interfaces
- Industrial PLCs
Q & A
- What is the resolution of the ADE7912ARIZ-RL ADC?
The resolution of the ADE7912ARIZ-RL is 24 bits. - How many channels does the ADE7912ARIZ-RL have?
The ADE7912ARIZ-RL has 3 channels. - What is the operating temperature range of the ADE7912ARIZ-RL?
The operating temperature range is from -40°C to +85°C. - What type of data interface does the ADE7912ARIZ-RL use?
The ADE7912ARIZ-RL uses a 4-wire SPI serial interface. - What is the signal-to-noise ratio (SNR) of the ADE7912ARIZ-RL?
The SNR is 67dBFS (ADC-FREQ=8KHz, BW=3300Hz, VDD=3.3V ± 10%, TA=25°C typ). - Does the ADE7912ARIZ-RL have an on-chip temperature sensor?
Yes, the ADE7912ARIZ-RL includes an on-chip temperature sensor. - What is the typical application of the ADE7912ARIZ-RL?
Typical applications include shunt-based polyphase meters, power quality monitoring, solar inverters, and industrial PLCs. - What safety and regulatory approvals does the ADE7912ARIZ-RL have?
The device has UL recognition 5000V rms for 1 minute per UL 1577, CSA component acceptance notice 5A, IEC 61010-1: 300V rms, VDE certificate of conformity, and DIN VDE V 0884-10 (VDE V 0884-10):2006-12. - What package type does the ADE7912ARIZ-RL come in?
The ADE7912ARIZ-RL comes in a 20-lead wide body SOIC package. - Is the ADE7912ARIZ-RL isolated?
Yes, the ADE7912ARIZ-RL features data and power isolation based on Analog Devices' iCoupler® technology.
