Overview
The ADM1021A, produced by onsemi, is a two-channel digital thermometer designed for thermal monitoring and management in various systems, including personal computers, notebook computers, and other electronic devices. It features on-chip and remote temperature sensing capabilities, making it versatile for different thermal management needs. The device requires no calibration and offers high accuracy, with ±1°C for the on-chip sensor and ±3°C for the remote sensor. It supports the System Management Bus (SMBus) protocol and includes programmable over/under temperature limits and conversion rates, enhancing its functionality and adaptability in different applications.
Key Specifications
| Parameter | Rating/Value | Unit |
|---|---|---|
| Supply Voltage Range | 3.0 to 5.5 | V |
| Operating Current | 200 µA (max) | µA |
| Standby Current | 1 µA | µA |
| Operating Temperature Range | -55 to +125 | °C |
| Maximum Junction Temperature | 150 | °C |
| Temperature Accuracy (On-chip) | ±1°C | °C |
| Temperature Accuracy (Remote) | ±3°C | °C |
| Data Transmission Standard | SMBus | |
| Package Type | QSOP-16 | |
| Compliance | Pb-Free, Halogen Free, RoHS Compliant |
Key Features
- On-chip and remote temperature sensing
- No calibration necessary
- Programmable over/under temperature limits
- Programmable conversion rate
- 2-wire SMBus serial interface
- Supports System Management Bus (SMBus) alert
- Low power consumption: 200 µA max operating current, 1 µA standby current
- Small 16-lead QSOP package
- Pb-Free, Halogen Free, and RoHS Compliant
Applications
- Desktop Computers
- Notebook Computers
- Smart Batteries
- Industrial Controllers
- Telecom Equipment
- Instrumentation
- Game Consoles
- RFID Readers
Q & A
- What is the primary function of the ADM1021A?
The ADM1021A is a two-channel digital thermometer and under/overtemperature alarm designed for thermal monitoring and management.
- What is the accuracy of the on-chip and remote temperature sensors?
The on-chip sensor has an accuracy of ±1°C, while the remote sensor has an accuracy of ±3°C.
- What is the supply voltage range for the ADM1021A?
The supply voltage range is from 3.0 V to 5.5 V.
- What is the maximum operating current of the ADM1021A?
The maximum operating current is 200 µA.
- Does the ADM1021A require calibration?
No, the ADM1021A does not require calibration.
- What communication protocol does the ADM1021A support?
The ADM1021A supports the System Management Bus (SMBus) protocol.
- What are the programmable features of the ADM1021A?
The ADM1021A allows for programmable over/under temperature limits and conversion rates.
- What is the package type of the ADM1021A?
The ADM1021A comes in a 16-lead QSOP package.
- Is the ADM1021A compliant with environmental regulations?
- What are some common applications of the ADM1021A?
