Overview
The ADM1033ARQZ-RL7, produced by onsemi, is a highly integrated thermal monitor and fan speed controller designed for use in various microprocessor-based systems. This device features both local and remote temperature sensing capabilities, allowing it to accurately monitor and control the temperature of the system. It can monitor the temperature of a remote thermal diode, which may be discrete or located on a microprocessor die, as well as its own ambient temperature. The ADM1033 also includes a fan speed controller that can be programmed to adjust fan speed based on temperature readings, ensuring efficient and quiet cooling.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3.0 | 3.30 | 5.5 | V |
| Supply Current (ICC) | - | - | 3.0 | mA |
| Standby Mode Current | - | - | 900 | μA |
| Temperature-to-Digital Converter Accuracy (Local) | - | - | ±1.0 | °C (20°C ≤ TA ≤ 60°C) |
| Temperature-to-Digital Converter Accuracy (Remote) | - | - | ±1.0 | °C (-40°C ≤ TD ≤ +100°C) |
| Conversion Time (Local Temperature) | - | 11 | - | ms |
| Conversion Time (Remote Temperature) | - | 32 | - | ms |
| Total Conversion Time | - | 43 | - | ms |
| Maximum Junction Temperature (TJ MAX) | - | - | 150 | °C |
| Storage Temperature Range | -65 | - | 150 | °C |
Key Features
- Local and Remote Temperature Channels with ±1°C Accuracy
- Automatic Remote Temperature Channel with up to 1 kΩ series resistance cancellation
- Fast Temperature Measurements (up to 64 measurements per second)
- SMBus 2.0, 1.1, and 1.0 Compliant
- Programmable Over/Undertemperature Limits and Fault Queue
- SMBus ALERT Output and Fail-Safe Overtemperature Comparator Output
- Fan Speed (RPM) Controller with Look-up Table for Temperature-to-Fan Speed Control
- Linear and Discrete Options for Look-up Table
- FAN_FAULT Output and THERM Input for PROCHOT Assertions
- 3.0 V to 5.5 V Supply Voltage and Small 16-lead QSOP Package
- Pb-Free Device
Applications
- Desktop and Notebook PCs
- Server Systems
- Embedded Systems
- Industrial Control Systems
- Any Microprocessor-Based Systems Requiring Temperature Monitoring and Fan Control
Q & A
- What is the primary function of the ADM1033ARQZ-RL7?
The primary function of the ADM1033ARQZ-RL7 is to monitor both local and remote temperatures and control the speed of a cooling fan based on these temperature readings.
- What is the accuracy of the temperature measurements?
The device offers ±1°C accuracy for both local and remote temperature channels.
- What communication interface does the ADM1033ARQZ-RL7 use?
The device communicates over an SMBus 2.0 interface, and it is also compliant with SMBus 1.1 and 1.0.
- How does the fan speed control work?
The fan speed can be controlled using a look-up table that maps temperature to fan speed. The control can be set to discrete or linear modes.
- What is the purpose of the ALERT output?
The ALERT output alerts the system to out-of-limit events, such as overtemperature conditions, and can be configured as sticky SMBus mode or comparator mode.
- What is the THERM I/O used for?
The THERM I/O measures assertions on the THERM pin as an input and asserts a low signal to indicate when the measured temperature exceeds the programmed THERM temperature as an output.
- What is the maximum junction temperature of the device?
The maximum junction temperature (TJ MAX) is 150°C.
- What is the storage temperature range for the device?
The storage temperature range is -65°C to +150°C.
- Is the device Pb-Free?
Yes, the ADM1033ARQZ-RL7 is a Pb-Free device.
- What package type does the ADM1033ARQZ-RL7 come in?
The device comes in a small 16-lead QSOP package.
