Overview
The NE1617ADS,118 from NXP USA Inc. is an accurate two-channel temperature monitor designed for precise temperature measurement in various applications. This device can measure the temperature of itself and a remote sensor, which can be a diode-connected transistor such as a discrete NPN/PNP or a diode-connected PNP built into another die. The temperatures are stored in a register and can be read via a 2-wire SMBus interface. The NE1617A is particularly useful in microprocessor systems where temperature monitoring is critical for system reliability and performance.
Key Specifications
| Specification | Value |
|---|---|
| Operating Supply Current | 70 μA |
| Temperature Range | -40°C to 125°C |
| Interface | 2-wire SMBus |
| Remote Sensor Type | Diode-connected transistor (e.g., 2N3904/2N3906) |
| Addressing | Up to 9 devices on the SMBus (determined by two address pins) |
| Power Mode | Standby mode (software or hardware controlled via STBY pin) |
| Alarm Function | Programmable overtemperature and under temperature alarm |
Key Features
- Accurate two-channel temperature monitoring for local and remote sensors.
- Temperature data stored in a register and readable via 2-wire SMBus.
- Programmable temperature update rate and alarm trip points.
- One-shot mode for immediate temperature update.
- Standby mode for power saving, controllable via software or hardware.
- Support for up to nine devices on the SMBus.
Applications
The NE1617ADS,118 is suitable for various applications where precise temperature monitoring is essential, including:
- Microprocessor systems to monitor CPU temperatures.
- Server and data center equipment for thermal management.
- Aerospace and automotive systems requiring reliable temperature sensing.
- Industrial control systems and automation.
- Medical devices and equipment that require accurate temperature monitoring.
Q & A
- What is the primary function of the NE1617ADS,118?
The primary function is to accurately monitor the temperature of itself and a remote sensor. - What type of interface does the NE1617ADS,118 use?
The device uses a 2-wire SMBus interface. - What is the operating supply current of the NE1617ADS,118?
The operating supply current is 70 μA. - Can the NE1617ADS,118 be used in multiple device configurations?
Yes, up to nine devices can be connected on the SMBus. - How can the NE1617ADS,118 be put into standby mode?
The device can be put into standby mode either via software over the SMBus or using the STBY pin. - What types of sensors can be used as remote sensors with the NE1617ADS,118?
Remote sensors can be diode-connected transistors such as discrete NPN/PNP transistors (e.g., 2N3904/2N3906) or diode-connected PNPs built into other dies. - Is the temperature update rate programmable?
Yes, the temperature update rate is programmable via the SMBus. - Does the NE1617ADS,118 have an alarm function?
Yes, it has a programmable overtemperature and under temperature alarm function. - What is the temperature range supported by the NE1617ADS,118?
The device supports a temperature range of -40°C to 125°C. - Can the NE1617ADS,118 perform a one-shot temperature update?
Yes, it has a one-shot mode that forces an immediate temperature update.
