Overview
The ADM1025ARQZ-REEL, produced by ON Semiconductor, is a comprehensive system hardware monitor designed for microprocessor-based systems. This integrated circuit provides measurement and limit comparison of various system parameters, including voltage and temperature. It is ideal for applications requiring hardware monitoring and protection in personal computers, electronic test equipment, and office electronics. The device operates within a supply voltage range of 3.0 V to 5.5 V and features a low supply current, making it energy-efficient. It also includes an I2C compatible system management bus (SMBus) for communication and control.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage Range | 3.0 | - | 5.5 | V | - |
| Operating Temperature Range | 0 | - | 100 | °C | - |
| Conversion Time (Analog Input or Internal Temperature) | - | - | 11.6 | ms | Note 4 |
| Conversion Time (External Temperature) | - | - | 34.8 | ms | Note 4 |
| Input Resistance (2.5 V, 3.3 V, 5 V, 12 V, VCCPIN) | 80 | 140 | 250 | kΩ | - |
| Output Low Voltage (IOUT = -6.0 mA, VCC = 3 V) | - | - | 0.4 | V | - |
| High Level Output Current (VOUT = VCC, VCC = 3 V) | - | 0.1 | 1.0 | μA | - |
| Clock Frequency (fSCLK) | - | - | 400 | kHz | See Figure 2 |
Key Features
- Up to 8 measurement channels, including five for voltage and one for temperature.
- Internal and external temperature measurement capabilities with on-chip temperature sensor and remote diode-connected transistor.
- Five digital inputs for VID bits and integrated 100 kΩ pull-ups on VID pins (ADM1025 only).
- LDCM support and I2C compatible system management bus (SMBus).
- Programmable RST output pin and programmable INT output pin to indicate undervoltage, overvoltage, and overtemperature conditions.
- Configurable offset for internal/external channel and shutdown mode to minimize power consumption.
- Limit comparison of all monitored values.
Applications
- Network servers and personal computers.
- Microprocessor-based office equipment.
- Test equipment and measuring instruments.
- Electronic test equipment and office electronics.
Q & A
- What is the supply voltage range of the ADM1025ARQZ-REEL? The supply voltage range is 3.0 V to 5.5 V.
- What is the operating temperature range of the ADM1025ARQZ-REEL? The operating temperature range is 0°C to 100°C.
- How many measurement channels does the ADM1025ARQZ-REEL have? It has up to 8 measurement channels, including five for voltage and one for temperature.
- What type of interface does the ADM1025ARQZ-REEL use for communication? It uses an I2C compatible system management bus (SMBus).
- What are the programmable output pins available on the ADM1025ARQZ-REEL? The device has programmable RST and INT output pins.
- Can the ADM1025ARQZ-REEL measure its own supply voltage? Yes, it can measure its own supply voltage.
- How does the ADM1025ARQZ-REEL support remote temperature sensing? It supports remote temperature sensing through D+ and D− inputs connected to a diode-connected external temperature-sensing transistor.
- What is the purpose of the on-chip band gap temperature sensor? The on-chip band gap temperature sensor monitors system ambient temperature.
- Can the ADM1025ARQZ-REEL be configured to minimize power consumption? Yes, it has a shutdown mode to minimize power consumption.
- What types of applications is the ADM1025ARQZ-REEL suitable for? It is suitable for network servers, personal computers, microprocessor-based office equipment, test equipment, and electronic test equipment.
