Overview
The ADM1294-1AACPZ-RL7, produced by Analog Devices Inc., is a high-accuracy integrated digital power monitor. This device is part of the ADM1293/ADM1294 series, designed to provide comprehensive monitoring of current, voltage, and power in various electronic systems. It utilizes an on-chip 12-bit analog-to-digital converter (ADC) to measure the voltage difference across an external sense resistor, enabling accurate current sensing. The device also supports the measurement of primary input voltage and an auxiliary input voltage. Communication with the device is facilitated through a PMBus™ compliant I2C interface, allowing for seamless integration with master controllers for real-time monitoring and control.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Current Sense Absolute Error | 0.04% | 0.33% | 2.65% | % | VSENSE = ±20 mV, TA = −40°C to +85°C, 128 sample averaging |
| Current Sense Range (CSR) | ±25 mV | mV | VSENSEP = 0 V to 18 V | ||
| Common-mode Sense Voltage | 0 V | 20 V | V | ||
| ADC Resolution | 12-bit | ||||
| Interface | PMBus™ compliant I2C | ||||
| Package Type | 16-LFCSP-WQ (4x4) | ||||
| Lifecycle Status | Active | ||||
| RoHS Compliance | Yes |
Key Features
- High Accuracy Current Monitoring: The device offers high accuracy current monitoring with an absolute error as low as 0.33% at ±20 mV sense voltage over temperature.
- Multi-Voltage Monitoring: Capable of monitoring current and two voltages using the same ADC, including primary input voltage and an auxiliary input voltage.
- PMBus Interface: Communicates through a PMBus™ compliant I2C interface, enabling easy integration with master controllers.
- Power Accumulator: Features a power accumulator for energy metering, allowing for the calculation of energy consumption over time.
- Alert and Interrupt Capabilities: Generates interrupt signals for overcurrent, overvoltage, undervoltage, and overpower conditions, enhancing system reliability and safety.
- High-Side and Low-Side Current Sensing: Supports both high-side and low-side current sensing, providing flexibility in system design.
Applications
- Power Supplies: Ideal for monitoring and controlling power supplies in various electronic systems.
- Energy Metering: Used in energy metering applications to measure and calculate energy consumption accurately.
- Server and Data Center Power Management: Suitable for monitoring power in server and data center environments to optimize energy efficiency and reliability.
- Industrial Automation: Applied in industrial automation systems for real-time monitoring and control of power parameters.
- Telecommunications Equipment: Used in telecommunications equipment to ensure reliable and efficient power management.
Q & A
- What is the primary function of the ADM1294-1AACPZ-RL7?
The primary function of the ADM1294-1AACPZ-RL7 is to provide high-accuracy digital power monitoring, including current, voltage, and power measurement.
- What type of interface does the ADM1294-1AACPZ-RL7 use for communication?
The device uses a PMBus™ compliant I2C interface for communication.
- What is the resolution of the ADC in the ADM1294-1AACPZ-RL7?
The ADC resolution is 12-bit.
- Can the ADM1294-1AACPZ-RL7 monitor both high-side and low-side current?
Yes, it supports both high-side and low-side current sensing.
- What is the common-mode sense voltage range of the ADM1294-1AACPZ-RL7?
The common-mode sense voltage range is from 0 V to 20 V.
- Does the ADM1294-1AACPZ-RL7 have power accumulator functionality?
Yes, it features a power accumulator for energy metering.
- What types of alerts can the ADM1294-1AACPZ-RL7 generate?
The device can generate alerts for overcurrent, overvoltage, undervoltage, and overpower conditions.
- What is the package type of the ADM1294-1AACPZ-RL7?
The package type is 16-LFCSP-WQ (4x4).
- Is the ADM1294-1AACPZ-RL7 RoHS compliant?
Yes, it is RoHS compliant.
- What are some common applications of the ADM1294-1AACPZ-RL7?
Common applications include power supplies, energy metering, server and data center power management, industrial automation, and telecommunications equipment.
