Overview
The ADT7461ARMZ-2, produced by onsemi, is a dual-channel digital thermometer designed for temperature monitoring and alarm functions in various applications, including PCs and thermal management systems. This component features a 2-wire serial interface compatible with the System Management Bus (SMBus) standards. It is available in an 8-pin MSOP package and is Pb-free, complying with EU RoHS regulations.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | 8-pin MSOP |
| Interface Type | 2-wire SMBus serial interface |
| Operating Supply Voltage | 3.0 V to 5.5 V |
| Operating Current | 170 μA (typical), 5.5 μA (standby) |
| Temperature Measurement Range | 0°C to +127°C (default), –55°C to +150°C (extended) |
| Resolution and Accuracy | 0.25°C resolution / 1°C accuracy (remote), 1°C resolution / 3°C accuracy (local) |
| Maximum Storage Temperature | –55°C to +150°C |
| Maximum Power Dissipation | Not specified, but low power consumption |
| RoHS Compliance | Yes, EU RoHS 2011/65/EU, 2015/863 |
Key Features
- On-chip and remote temperature sensing with series resistance cancellation up to 3 kΩ.
- Programmable over/under temperature limits.
- Offset registers for system calibration.
- ALERT output for out-of-range temperature signals, configurable as a second THERM output.
- THERM output for on/off control of a cooling fan.
- Pin- and register-compatible with the ADM1032.
- Low power consumption with 170 μA operating current and 5.5 μA standby current.
Applications
- Desktop and notebook computers.
- Industrial controllers.
- Smart batteries.
- Embedded systems.
- Instrumentation.
Q & A
- What is the primary function of the ADT7461ARMZ-2?
The ADT7461ARMZ-2 is a dual-channel digital thermometer and under/over temperature alarm designed for temperature monitoring in various applications.
- What type of interface does the ADT7461ARMZ-2 use?
The ADT7461ARMZ-2 uses a 2-wire SMBus serial interface.
- What are the operating supply voltage and current requirements?
The operating supply voltage is 3.0 V to 5.5 V, with an operating current of 170 μA (typical) and a standby current of 5.5 μA.
- What is the temperature measurement range of the ADT7461ARMZ-2?
The default temperature measurement range is 0°C to +127°C, with an extended range of –55°C to +150°C.
- What is the resolution and accuracy of the temperature measurements?
The remote channel has a 0.25°C resolution and 1°C accuracy, while the local channel has a 1°C resolution and 3°C accuracy.
- Does the ADT7461ARMZ-2 support series resistance cancellation?
Yes, it can cancel up to 3 kΩ of series resistance with the remote diode.
- What are the ALERT and THERM outputs used for?
The ALERT output signals when the temperature is out of range, and the THERM output allows on/off control of a cooling fan. The ALERT output can also be reconfigured as a second THERM output.
- Is the ADT7461ARMZ-2 RoHS compliant?
Yes, it is compliant with EU RoHS 2011/65/EU, 2015/863.
- What are some typical applications of the ADT7461ARMZ-2?
Typical applications include desktop and notebook computers, industrial controllers, smart batteries, embedded systems, and instrumentation.
- What is the SMBus address of the ADT7461ARMZ-2?
The SMBus address of the ADT7461ARMZ-2 is 0x4C.
