Overview
The ADM1030ARQZ, produced by onsemi, is an ACPI-compliant two-channel digital thermometer and under/over temperature alarm. It is designed for use in computers and thermal management systems, particularly optimized for the Pentium III. This device offers high accuracy temperature monitoring with a ±1°C accuracy, allowing system designers to reduce temperature guardbanding and enhance system performance. The ADM1030ARQZ also features a Pulsewidth Modulated (PWM) Fan Control output to regulate the speed of cooling fans and includes a TACH input for monitoring fan speed. It supports both 2-wire and 3-wire fans and can detect stalled fans. The device operates via a 2-wire System Management Bus (SMBus) with Alert on Rise (ARA) support.
Key Specifications
| Parameter | Specification |
|---|---|
| Supply Voltage Range | 3 V to 5.5 V |
| Temperature Accuracy | ±1°C (max) |
| Operating Temperature Range | 0°C to 100°C |
| Sensing Temperature Range | 0°C to 100°C (external sensor) |
| PWM Duty Cycle Range | 33% to 100% |
| PWM Frequency | Programmable |
| Fan Speed Measurement | TACH input, analog input for 2-wire fans |
| Interface Type | 2-wire SMBus with ARA support |
| Package Type | 16-QSOP (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
Key Features
- ACPI-compliant two-channel digital thermometer and under/over temperature alarm
- Pulsewidth Modulated (PWM) Fan Control output with programmable duty cycle (33% to 100%)
- TACH input for fan speed measurement and support for 2-wire fans using a sense resistor
- Dedicated Fan Speed Control Loop for autonomous fan control without CPU intervention
- Overtemperature THERM output pin and programmable INT output pin
- Configurable offset for all temperature channels (±15°C)
- Shutdown mode to minimize power consumption
- 2-wire SMBus interface with ARA support
Applications
- Notebook PCs
- Network Servers
- Personal Computers
- Telecommunications Equipment
Q & A
- What is the primary function of the ADM1030ARQZ?
The primary function of the ADM1030ARQZ is to serve as an ACPI-compliant two-channel digital thermometer and under/over temperature alarm, along with PWM fan control.
- What is the temperature accuracy of the ADM1030ARQZ?
The temperature accuracy of the ADM1030ARQZ is ±1°C.
- What is the supply voltage range for the ADM1030ARQZ?
The supply voltage range for the ADM1030ARQZ is 3 V to 5.5 V.
- How does the ADM1030ARQZ control fan speed?
The ADM1030ARQZ controls fan speed through a Pulsewidth Modulated (PWM) output with a programmable duty cycle between 33% and 100%.
- Can the ADM1030ARQZ detect a stalled fan?
- What interface does the ADM1030ARQZ use for communication?
The ADM1030ARQZ uses a 2-wire SMBus interface with Alert on Rise (ARA) support.
- What is the operating temperature range of the ADM1030ARQZ?
The operating temperature range of the ADM1030ARQZ is 0°C to 100°C.
- Can the temperature readings be offset on the ADM1030ARQZ?
- What types of fans does the ADM1030ARQZ support?
The ADM1030ARQZ supports both 2-wire and 3-wire fans.
- Is the ADM1030ARQZ RoHS compliant?
