Overview
The ADT7461ARZ is a dual-channel digital thermometer and under/over temperature alarm designed by onsemi. It is intended for use in PCs, thermal management systems, and other applications requiring precise temperature monitoring. The device is pin- and register-compatible with the ADM1032, making it a versatile option for various thermal management needs.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 3V to 5.5V |
| Operating Current | 170 µA |
| Standby Current | 5.5 µA |
| Temperature Measurement Range | 0°C to +127°C (default) or –55°C to +150°C (extended) |
| Resolution/Accuracy (Remote Channel) | 0.25°C resolution / 1°C accuracy |
| Resolution/Accuracy (Local Channel) | 1°C resolution / 3°C accuracy |
| Series Resistance Cancellation | Up to 3 kΩ (typical) |
| Interface | 2-wire SMBus with SMBus Alert Support |
| Package Types | 8-lead SOIC NB, 8-lead MSOP |
| Compliance | Pb-Free, RoHS Compliant |
Key Features
- On-chip and remote temperature sensor
- Configurable ALERT output and up to two overtemperature fail-safe THERM outputs
- Programmable over/under temperature limits
- Offset registers for system calibration
- Extended, switchable temperature measurement range
- Series resistance cancellation for noise filtering
- Low operating current (170 µA) and standby current (5.5 µA)
Applications
- Desktop and notebook computers
- Industrial controllers
- Smart batteries
- Embedded systems
- Instrumentation
- Game consoles
- RFID readers
- DSL line cards
Q & A
- What is the primary function of the ADT7461ARZ? The ADT7461ARZ is a dual-channel digital thermometer and under/over temperature alarm.
- What are the supported temperature measurement ranges? The device supports a default range of 0°C to +127°C and an extended range of –55°C to +150°C.
- What is the resolution and accuracy of the remote temperature channel? The remote channel has a resolution of 0.25°C and an accuracy of 1°C.
- How does the series resistance cancellation feature work? The device can automatically cancel up to 3 kΩ (typical) of resistance in series with the temperature monitoring diode to allow noise filtering.
- What interface does the ADT7461ARZ use for communication? The device uses a 2-wire SMBus interface with SMBus Alert Support.
- What are the package types available for the ADT7461ARZ? The device is available in 8-lead SOIC NB and 8-lead MSOP packages.
- Is the ADT7461ARZ Pb-Free and RoHS Compliant? Yes, the device is Pb-Free and RoHS Compliant.
- What are the typical applications of the ADT7461ARZ? Applications include desktop and notebook computers, industrial controllers, smart batteries, embedded systems, and instrumentation.
- Can the ALERT output be reconfigured? Yes, the ALERT output can be reconfigured as a second THERM output if required.
- What is the operating and standby current of the ADT7461ARZ? The operating current is 170 µA, and the standby current is 5.5 µA.
