Overview
The ADT7461AARMZ-R, produced by ON Semiconductor, is a dual-channel digital thermometer and undertemperature/overtemperature alarm. It is designed for use in PCs, thermal management systems, and various other applications requiring precise temperature monitoring. The device is pin- and register-compatible with the ADM1032 and ADT7461, making it a versatile option for system designers. It features series resistance cancellation, which allows for the automatic cancellation of up to 1.5 kΩ of resistance in series with the temperature monitoring diode, enhancing noise filtering and accuracy.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VDD) | 3.0 to 3.6 | V |
| Operating Current | 240 | µA |
| Standby Current | 5 | µA |
| Temperature Resolution (Remote) | 0.25°C | |
| Temperature Accuracy (Remote) | ±1°C | |
| Temperature Resolution (Local) | 1°C | |
| Temperature Accuracy (Local) | ±1°C | |
| Series Resistance Cancellation | Up to 1.5 kΩ (typical) | |
| Temperature Measurement Range | 0°C to +127°C (default) or -64°C to +191°C | |
| Interface | 2-wire SMBus serial interface with SMBus alert support | |
| Package Type | MSOP-8 | |
| Operating Temperature Range | -40°C to 125°C |
Key Features
- On-chip and remote temperature sensor
- Automatically cancels up to 1.5 kΩ (typical) of resistance in series with the remote diode to allow noise filtering
- Extended, switchable temperature measurement range: 0°C to +127°C (default) or -64°C to +191°C
- Pin- and register-compatible with ADM1032 and ADT7461
- 2-wire SMBus serial interface with SMBus alert support
- Programmable over/undertemperature limits
- Offset registers for system calibration
- Up to two overtemperature fail-safe THERM outputs
- Small 8-lead MSOP package
Applications
- Notebook and desktop computers
- Game consoles
- RFID readers
- Graphics cards
- LCD TVs
- Dishwashers
- Industrial controllers
- Smart batteries
- Automotive systems
- Embedded systems
- Burn-in applications
- Instrumentation
Q & A
- What is the primary function of the ADT7461AARMZ-R?
The ADT7461AARMZ-R is a dual-channel digital thermometer and undertemperature/overtemperature alarm. - What is the series resistance cancellation feature?
The device can automatically cancel up to 1.5 kΩ of resistance in series with the temperature monitoring diode, allowing for noise filtering and improved accuracy. - What are the temperature measurement ranges of the ADT7461AARMZ-R?
The device can measure temperatures in the range of 0°C to +127°C (default) or -64°C to +191°C. - What interface does the ADT7461AARMZ-R use for communication?
The device uses a 2-wire SMBus serial interface with SMBus alert support. - What is the operating current and standby current of the ADT7461AARMZ-R?
The operating current is 240 µA, and the standby current is 5 µA. - What are some common applications of the ADT7461AARMZ-R?
Common applications include notebook and desktop computers, game consoles, RFID readers, graphics cards, LCD TVs, dishwashers, industrial controllers, and more. - Is the ADT7461AARMZ-R compatible with other devices?
Yes, it is pin- and register-compatible with the ADM1032 and ADT7461. - How does the device handle over/undertemperature alerts?
The device has programmable over/undertemperature limits and can generate ALERT outputs or THERM outputs when these limits are exceeded. - What is the package type of the ADT7461AARMZ-R?
The device is packaged in an 8-lead MSOP. - What is the operating temperature range of the ADT7461AARMZ-R?
The operating temperature range is -40°C to 125°C.
