Overview
The ADT7461ARMZ-2REEL7 is a dual-channel digital thermometer and under/over temperature alarm produced by onsemi. It is designed for use in PCs and thermal management systems, offering compatibility with the ADM1032. This device features series resistance cancellation, configurable ALERT output, and an extended, switchable temperature measurement range. The ADT7461 accurately measures the temperature of a remote thermal diode to ±1°C and the ambient temperature to ±3°C, making it a versatile component for various thermal monitoring applications.
Key Specifications
| Parameter | Rating/Value | Unit |
|---|---|---|
| Positive Supply Voltage (VDD) to GND | -0.3, +5.5 | V |
| Input Voltage (D+, D-) | -0.3 to VDD + 0.3 | V |
| Input Current, SDATA, THERM | -1, +50 | mA |
| ESD Rating, All Pins (Human Body Model) | 2000 | V |
| Maximum Junction Temperature (TJ Max) | 150 | °C |
| Storage Temperature Range | -65 to +150 | °C |
| Operating Temperature Range | -40 to +120 | °C |
| Supply Voltage | 3 to 5.5 | V |
| Resolution | 0.25°C (Remote), 1°C (Local) | °C |
| Accuracy | ±1°C (Remote), ±3°C (Local) | °C |
| Interface Type | 2-wire SMBus | |
| Package Type | 8-TSSOP, 8-MSOP |
Key Features
- On-Chip and Remote Temperature Sensor
- 0.25°C Resolution/1°C Accuracy on Remote Channel, 1°C Resolution/3°C Accuracy on Local Channel
- Automatically Cancels Up to 3 kΩ (Typ) of Resistance in Series with Remote Diode to Allow Noise Filtering
- Extended, Switchable Temperature Measurement Range: 0°C to +127°C (Default) or –55°C to +150°C
- Pin- and Register-Compatible with the ADM1032
- 2-wire SMBus Serial Interface with SMBus Alert Support
- Configurable ALERT Output and Up to Two Over Temperature Fail-safe THERM Outputs
- Low Operating Current: 170 µA, Standby Current: 5.5 µA
- Programmable Over/Under Temperature Limits
Applications
- Digital Signage
- Automatic Doors/Elevators
- Industrial
- HVAC
- Disk Drives
- Automotive
- Portable Medical Instruments
- Computers
- Battery Management
- Printers
- Notebook and Desktop Computers
- Game Consoles
- Rfid Readers
- DSL Line Cards
Q & A
- What is the primary function of the ADT7461ARMZ-2REEL7?
The ADT7461ARMZ-2REEL7 is a dual-channel digital thermometer and under/over temperature alarm designed for use in PCs and thermal management systems.
- What is the temperature measurement accuracy of the ADT7461ARMZ-2REEL7?
The device accurately measures the temperature of a remote thermal diode to ±1°C and the ambient temperature to ±3°C.
- What is the series resistance cancellation feature of the ADT7461ARMZ-2REEL7?
The device can automatically cancel up to 3 kΩ (typical) of resistance in series with the temperature monitoring diode to allow noise filtering.
- What are the configurable outputs of the ADT7461ARMZ-2REEL7?
The device has a configurable ALERT output and up to two over temperature fail-safe THERM outputs.
- What is the communication interface of the ADT7461ARMZ-2REEL7?
The device communicates over a 2-wire SMBus serial interface compatible with system management bus (SMBus) standards.
- What are the operating and standby current values of the ADT7461ARMZ-2REEL7?
The operating current is 170 µA, and the standby current is 5.5 µA.
- What is the default and extended temperature measurement range of the ADT7461ARMZ-2REEL7?
The default range is 0°C to +127°C, and the extended range is –55°C to +150°C.
- What are the package types available for the ADT7461ARMZ-2REEL7?
The device is available in 8-TSSOP and 8-MSOP packages.
- What are some common applications of the ADT7461ARMZ-2REEL7?
Common applications include digital signage, automatic doors/elevators, industrial, HVAC, disk drives, automotive, portable medical instruments, computers, battery management, and printers.
- Is the ADT7461ARMZ-2REEL7 compatible with other devices?
Yes, it is pin- and register-compatible with the ADM1032.
