Overview
The ADT7461ARM-REEL7 is a dual-channel digital thermometer and under/over temperature alarm designed by Analog Devices Inc. It is primarily intended for use in PCs and thermal management systems. This device features both on-chip and remote temperature sensing capabilities, making it versatile for various applications requiring precise temperature monitoring.
Key Specifications
| Parameter | Description |
|---|---|
| Temperature Resolution | 0.25°C on remote channel, 1°C on local channel |
| Temperature Accuracy | 1°C on remote channel, 3°C on local channel |
| Temperature Measurement Range | 0°C to +127°C (default) or –55°C to +150°C (extended range) |
| Series Resistance Cancellation | Up to 3 kΩ (typical) |
| Interface | 2-wire SMBus serial interface |
| SMBus Address | 0x4C (ADT7461), 0x4D (ADT7461-2) |
| Package Type | 8-Lead MSOP or 8-Lead SOIC |
| Operating Current | 170 μA |
| Standby Current | 5.5 μA |
Key Features
- On-chip and remote temperature sensor
- Automatically cancels up to 3 kΩ of resistance in series with remote diode for noise filtering
- Extended, switchable temperature measurement range
- Pin- and register-compatible with the ADM1032
- Programmable over/under temperature limits
- Offset registers for system calibration
- Configurable ALERT output and THERM outputs
- Small 8-lead MSOP or SOIC packages
Applications
- Desktop and notebook computers
- Industrial controllers
- Smart batteries
- Embedded systems
- Instrumentation
Q & A
- What is the primary function of the ADT7461ARM-REEL7?
The ADT7461ARM-REEL7 is a dual-channel digital thermometer and under/over temperature alarm.
- What are the temperature resolution and accuracy of the ADT7461ARM-REEL7?
The device has a 0.25°C resolution and 1°C accuracy on the remote channel, and a 1°C resolution and 3°C accuracy on the local channel.
- What is the temperature measurement range of the ADT7461ARM-REEL7?
The temperature measurement range is 0°C to +127°C (default) or –55°C to +150°C (extended range).
- How does the ADT7461ARM-REEL7 handle series resistance in temperature measurements?
The device can automatically cancel up to 3 kΩ of resistance in series with the remote diode to allow noise filtering.
- What interface does the ADT7461ARM-REEL7 use for communication?
The device uses a 2-wire SMBus serial interface.
- What are the SMBus addresses available for the ADT7461?
The SMBus addresses are 0x4C (ADT7461) and 0x4D (ADT7461-2).
- What are the package types available for the ADT7461ARM-REEL7?
The device is available in 8-Lead MSOP or 8-Lead SOIC packages.
- What is the operating and standby current of the ADT7461ARM-REEL7?
The operating current is 170 μA, and the standby current is 5.5 μA.
- Can the ALERT output be reconfigured on the ADT7461ARM-REEL7?
- What are some common applications of the ADT7461ARM-REEL7?
