Overview
The ADM1033ARQZ-REEL7, produced by ON Semiconductor, is a highly versatile thermal monitor and fan speed (RPM) controller. This device is designed to monitor both local and remote temperatures, making it ideal for use in various applications, including microprocessor-based systems. It can accurately measure temperatures and control the speed of cooling fans based on the measured temperatures. The ADM1033 also features an ALERT output to indicate error conditions and a THERM I/O to signal overtemperature conditions. The device communicates over a 2-wire SMBus 2.0 interface, allowing for flexible configuration and control.
Key Specifications
| Parameter | Min | Typ | Max | Units | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage, VCC | 3.0 | 3.3 | 3.6 | V | |
| Supply Current, ICC | 3.0 mA | Interface inactive, ADC active | |||
| Standby Mode Current | 900 µA | ||||
| Undervoltage Lockout Threshold | 2.5 | V | |||
| Power-On Reset Threshold | 1.0 | 2.4 | V | ||
| Internal Sensor Accuracy | ±1 | ±2 | °C | 20°C ≤ TA ≤ 60°C | |
| External Diode Sensor Accuracy | ±0.5 | ±1 | °C | −40°C ≤ TD ≤ +100°C; TA = +40°C | |
| Resolution | 0.03125 | °C | |||
| Fan Speed Measurement Accuracy | ±4% | ||||
| Maximum Junction Temperature (TJ MAX) | 150 | °C | |||
| Storage Temperature Range | −65 | +150 | °C | ||
| Lead Temperature, Soldering (10 s) | 300 | °C | |||
| IR Reflow Peak Temperature | 220 | °C |
Key Features
- Temperature Monitoring: Monitors both local and remote temperatures using internal and external diode sensors.
- Fan Speed Control: Controls fan speed based on temperature, with options for discrete or linear fan speed profiles.
- SMBus Interface: Communicates over a 2-wire SMBus 2.0 interface, with an 8-level LOCATION input to select between SMBus 1.1 and SMBus 2.0.
- Error Indication: Features an ALERT output to indicate error conditions and a THERM I/O to signal overtemperature conditions.
- Programmable Settings: Allows for programming target fan speeds and configuring temperature-to-fan speed profiles using a look-up table.
- Low Power Consumption: Operates in standby mode with a current as low as 900 µA.
- High Accuracy: Offers high accuracy in temperature measurements with a resolution of 0.03125°C.
Applications
- Microprocessor-Based Systems: Ideal for monitoring and controlling temperatures in microprocessor-based systems.
- PCs and Notebooks: Used in personal computers and notebooks for thermal management.
- Industrial Equipment: Suitable for industrial equipment requiring precise temperature monitoring and fan control.
- Power Supplies: Used in power supplies to ensure reliable and efficient cooling.
- Data Centers: Can be used in data centers for server and equipment cooling management.
Q & A
- What is the primary function of the ADM1033ARQZ-REEL7?
The primary function is to monitor local and remote temperatures and control the speed of cooling fans based on these temperatures. - What interface does the ADM1033ARQZ-REEL7 use for communication?
The device communicates over a 2-wire SMBus 2.0 interface. - How does the ADM1033ARQZ-REEL7 indicate error conditions?
Error conditions are indicated by the ALERT output. - What is the range of the supply voltage for the ADM1033ARQZ-REEL7?
The supply voltage range is from 3.0 V to 3.6 V. - What is the accuracy of the internal temperature sensor?
The internal temperature sensor accuracy is ±1°C to ±2°C depending on the temperature range. - Can the fan speed be programmed?
Yes, the fan speed can be programmed using a target fan speed or a temperature-to-fan speed profile. - What is the maximum junction temperature of the ADM1033ARQZ-REEL7?
The maximum junction temperature is 150°C. - What is the storage temperature range for the ADM1033ARQZ-REEL7?
The storage temperature range is from −65°C to +150°C. - How accurate is the fan speed measurement?
The fan speed measurement accuracy is ±4%. - What is the purpose of the THERM I/O pin?
The THERM I/O pin signals overtemperature conditions and can also measure assertions on the THERM pin.
