Key facts
- Brand
- Analog Devices
- Model
- ADM1021
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-08
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Analog Devices ADM1021 Low Cost Microprocessor System Temperature Monitor Datasheet
The ADM1021 is a low-cost microprocessor system temperature monitor designed to measure temperatures using on-chip or remote sensors. It features improved accuracy over previous models like the MAX1617, with 71°C accuracy for on-chip sensing and 3°C accuracy for remote sensors.
The device utilizes a two-wire SMBus serial interface to communicate programmable over/under temperature limits and conversion rates. When limits are exceeded, an ALERT output signals the condition as an interrupt or SMBus alert. The chip supports applications in desktop computers, notebook computers, smart batteries, industrial controllers, and telecom equipment.
Analog Devices ADM1021 specifications
| Temperature Error, Remote Sensor | -3 +3 °C Ta = +60°C to +100°C |
|---|---|
| Supply Voltage Range | 3.0 V to 5.5 V |
| Standby Supply Current | 3 pA (typical) |
| Operating Temperature Range | -55°C to +125°C |
| Package Type | 16-Lead QSOP |
Source: Analog Devices ADM1021 Low Cost Microprocessor System Temperature Monitor Datasheet
All Analog Devices ADM1021 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the accuracy of the on-chip temperature sensor?
The device provides 71°C accuracy for the on-chip sensor.
From: Analog Devices ADM1021 Low Cost Microprocessor System Temperature Monitor Datasheet
Does this device require calibration?
No, no calibration is necessary as the measurement technique cancels out the absolute value of the transistor's base emitter voltage.
From: Analog Devices ADM1021 Low Cost Microprocessor System Temperature Monitor Datasheet
What serial interface does the ADM1021 use?
It uses a two‑wire SMBus serial interface compatible with SMBus standards.
How are temperature limits programmed?
High and low temperature limits are programmed over the SMBus and stored in the device’s limit registers.