Overview
The ADM1028ARQ from Analog Devices Inc. is a low-cost temperature monitor and fan controller designed for microprocessor-based systems. This integrated circuit (IC) is capable of monitoring both ambient system temperature and the temperature of a remote sensor diode, making it ideal for applications such as hardware monitoring in PCs, electronic test equipment, and office electronics. The ADM1028ARQ features a System Management Bus (SMBus) interface for reading temperature values and programming limit comparisons. It also includes a digital-to-analog converter (DAC) for precise fan speed control, ensuring efficient and quiet operation of the system.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Package | Bulk, 16-QSOP |
| Output Type | SMBus |
| Function | Fan Control, Temp Monitor |
| Voltage - Supply | 3V ~ 5.5V |
| Operating Temperature | 0°C ~ 100°C |
| Sensor Type | Internal and External |
| Sensing Temperature | 0°C ~ 100°C (External Sensor) |
| Topology | ADC, Register Bank |
| Output Alarm | No |
| Output Fan | Yes |
| RoHS Status | ROHS3 Compliant |
Key Features
- Temperature Monitoring: Monitors both ambient system temperature and the temperature of a remote sensor diode.
- Fan Control: Includes a DAC for precise fan speed control, with a ramp rate register to control the rate of fan speed changes, reducing fan acoustics and prolonging fan life.
- SMBus Interface: Allows for reading temperature values and programming limit comparisons via the System Management Bus.
- Automatic Hardware Temperature Trip Point: Drives the fan to full speed if the temperature exceeds the set limit.
- Remote Reset and Power-Down: Can be remotely shut down via the SMBus.
- Interrupt Outputs: Provides interrupt outputs that are asserted if software or hardware limits are exceeded.
Applications
- Hardware Monitoring in PCs: Ideal for monitoring temperatures and controlling fans in personal computers.
- Electronic Test Equipment: Used in various test equipment to monitor and control temperatures.
- Office Electronics: Suitable for temperature monitoring and fan control in office equipment such as printers and servers.
- Network Servers: Monitors and controls temperatures in network servers to ensure optimal performance.
- Microprocessor-Based Office Equipment: Used in various microprocessor-based office equipment for temperature monitoring and fan control.
Q & A
- What is the primary function of the ADM1028ARQ?
The primary function of the ADM1028ARQ is to monitor temperature and control fan speed in microprocessor-based systems.
- What types of sensors does the ADM1028ARQ support?
The ADM1028ARQ supports both internal and external temperature sensors.
- What is the operating temperature range of the ADM1028ARQ?
The operating temperature range of the ADM1028ARQ is 0°C to 100°C.
- What is the supply voltage range for the ADM1028ARQ?
The supply voltage range for the ADM1028ARQ is 3V to 5.5V.
- Does the ADM1028ARQ have remote reset and power-down capabilities?
Yes, the ADM1028ARQ can be remotely reset and powered down via the SMBus.
- How does the ADM1028ARQ control fan speed?
The ADM1028ARQ controls fan speed using a DAC and allows for the setting of a ramp rate to avoid sudden changes in fan speed.
- Is the ADM1028ARQ ROHS compliant?
Yes, the ADM1028ARQ is ROHS3 compliant.
- What interface does the ADM1028ARQ use for communication?
The ADM1028ARQ uses the System Management Bus (SMBus) for communication.
- What are the typical applications of the ADM1028ARQ?
The ADM1028ARQ is typically used in PCs, electronic test equipment, office electronics, and network servers.
- Does the ADM1028ARQ have interrupt outputs?
Yes, the ADM1028ARQ has interrupt outputs that are asserted if software or hardware limits are exceeded.
