Overview
The ADT7461AARMZ-2REEL, produced by onsemi, is a dual-channel digital thermometer and under/over temperature alarm. This component is designed for use in various thermal management systems, including PCs, industrial controllers, and embedded systems. It features a 2-wire serial interface compatible with the System Management Bus (SMBus) standards and is pin- and register-compatible with the ADM1032. The device includes on-chip and remote temperature sensing capabilities, making it versatile for different applications.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | 8-lead MSOP |
| Operating Supply Voltage | 3.0 V to 5.5 V |
| Maximum Operating Supply Current | 170 μA (operating), 5.5 μA (standby) |
| Temperature Measurement Range | Default: 0°C to +127°C, Switchable: –55°C to +150°C |
| Resolution/Accuracy | Remote: 0.25°C resolution, ±1°C accuracy; Local: 1°C resolution, ±3°C accuracy |
| Series Resistance Cancellation | Up to 3 kΩ (typical) |
| SMBus Address | 0x4C |
| Output Type | ALERT output, THERM output (configurable as second THERM output) |
| Compliance | EU RoHS compliant (2011/65/EU, 2015/863) |
Key Features
- On-chip and remote temperature sensor with 0.25°C resolution and ±1°C accuracy on the remote channel, and 1°C resolution and ±3°C accuracy on the local channel.
- Automatically cancels up to 3 kΩ (typical) of resistance in series with the remote diode to allow noise filtering.
- Extended, switchable temperature measurement range from 0°C to +127°C (default) or –55°C to +150°C.
- Configurable ALERT output and up to two overtemperature fail-safe THERM outputs.
- Programmable over/undertemperature limits and offset registers for system calibration.
- 2-wire SMBus serial interface with SMBus alert support.
- Small 8-lead SOIC NB or 8-lead MSOP packages.
Applications
- Desktop and notebook computers.
- Industrial controllers.
- Smart batteries.
- Embedded systems.
- Instrumentation.
Q & A
- What is the primary function of the ADT7461AARMZ-2REEL? The primary function is to serve as a dual-channel digital thermometer and under/over temperature alarm.
- What are the supported temperature measurement ranges? The default range is 0°C to +127°C, but it can be switched to –55°C to +150°C.
- What is the resolution and accuracy of the remote temperature sensor? The remote temperature sensor has a resolution of 0.25°C and an accuracy of ±1°C.
- How does the series resistance cancellation feature work? It automatically cancels up to 3 kΩ (typical) of resistance in series with the remote diode to allow noise filtering.
- What is the SMBus address of the ADT7461AARMZ-2REEL? The SMBus address is 0x4C.
- What are the typical operating supply voltages and currents? The operating supply voltage is 3.0 V to 5.5 V, with an operating current of 170 μA and a standby current of 5.5 μA.
- Is the ADT7461AARMZ-2REEL RoHS compliant? Yes, it is EU RoHS compliant (2011/65/EU, 2015/863).
- What are the common applications of the ADT7461AARMZ-2REEL? Common 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.
- What package types are available for the ADT7461AARMZ-2REEL? It is available in 8-lead SOIC NB and 8-lead MSOP packages.
