Overview
The ADT7461ARMZ-2REEL, produced by onsemi, is a dual-channel digital thermometer and under/over temperature alarm. It is designed for use in PCs and thermal management systems, offering advanced features such as series resistance cancellation, configurable ALERT output, and an extended, switchable temperature measurement range. The device is pin- and register-compatible with the ADM1032, making it a versatile option for various thermal monitoring applications.
Key Specifications
| Parameter | Rating/Value | Unit |
|---|---|---|
| Positive Supply Voltage (VDD) to GND | -0.3 to +5.5 | V |
| Resolution | 8 bits | |
| Accuracy - Remote Channel | ±1°C | |
| Accuracy - Local Channel | ±3°C | |
| Operating Temperature Range | -40°C to +120°C | |
| Temperature Measurement Range | 0°C to +127°C (default), -55°C to +150°C (extended) | |
| Supply Voltage Range | 3V to 5.5V | |
| Package/Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | |
| Mounting Type | Surface Mount | |
| Serial Interface | 2-wire SMBus |
Key Features
- On-Chip and Remote Temperature Sensor
- Series Resistance Cancellation (up to 3 kΩ typical)
- Configurable ALERT output and THERM output
- Extended, Switchable Temperature Measurement Range (0°C to +127°C or -55°C to +150°C)
- Pin- and Register-Compatible with the ADM1032
- 2-wire SMBus Serial Interface with SMBus Alert Support
- One-Shot, Output Switch, Programmable Limit, and Standby Mode
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
Applications
- HVAC Systems
- Disk Drives
- Automotive Systems
- Portable Medical Instruments
- Computers and Servers
- Battery Management Systems
- Printers and FAX Machines
- Power Supply Modules
- Mobile Phones
Q & A
- What is the primary function of the ADT7461ARMZ-2REEL?
The ADT7461ARMZ-2REEL is a dual-channel digital thermometer and under/over temperature alarm designed for thermal management in PCs and other systems.
- What is the temperature measurement accuracy of the ADT7461ARMZ-2REEL?
The device can accurately measure the remote temperature to ±1°C and the local temperature to ±3°C.
- What is the default temperature measurement range of the ADT7461ARMZ-2REEL?
The default temperature measurement range is 0°C to +127°C, but it can be switched to an extended range of -55°C to +150°C.
- What type of serial interface does the ADT7461ARMZ-2REEL use?
The device communicates over a 2-wire SMBus serial interface.
- What are the key features of the ALERT and THERM outputs?
The ALERT output signals when the temperature is out of range, and the THERM output allows on/off control of a cooling fan. The ALERT output can also be reconfigured as a second THERM output.
- What is the series resistance cancellation feature?
The device can automatically cancel up to 3 kΩ (typical) of resistance in series with the remote temperature monitoring diode to allow noise filtering.
- What are the common applications of the ADT7461ARMZ-2REEL?
Common applications include HVAC systems, disk drives, automotive systems, portable medical instruments, computers, battery management systems, and more.
- What is the operating temperature range of the ADT7461ARMZ-2REEL?
The operating temperature range is -40°C to +120°C.
- What is the supply voltage range for the ADT7461ARMZ-2REEL?
The supply voltage range is 3V to 5.5V.
- What type of packaging is available for the ADT7461ARMZ-2REEL?
The device is available in 8-TSSOP and 8-MSOP packages with a surface mount type.
