Overview
The NE1617A, produced by NXP USA Inc., is an accurate two-channel temperature monitor designed for microprocessor systems. It measures the temperature of both the local device and a remote sensor, which can be a diode-connected transistor such as a discrete NPN/PNP (e.g., 2N3904/2N3906) or a diode-connected PNP built into another die (e.g., some Intel microprocessors). The temperatures are stored in a register and can be read via a 2-wire SMBus interface. The device offers programmable temperature update rates, a one-shot mode for immediate temperature updates, and programmable alarms for overtemperature and undertemperature conditions.
Key Specifications
| Specification | Description |
|---|---|
| Package Type | 16-lead SSOP (QSOP) |
| Package Dimensions | Body width 3.9 mm; lead pitch 0.635 mm |
| Operating Temperature Range | -40°C to +125°C |
| Sensor Type | Local and Remote (diode-connected transistor) |
| Interface | 2-wire SMBus |
| Addressing | Up to 9 devices on the SMBus, determined by two address pins |
| Power Mode | Standby mode (software or hardware controlled) |
| ESD Protection | Exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 |
| Latch-up Testing | Exceeds 100 mA per JEDEC standard JESD78 |
Key Features
- Accurate two-channel temperature monitoring for local and remote sensors.
- Programmable temperature update rates via SMBus.
- One-shot mode for immediate temperature updates.
- Programmable alarms for overtemperature and undertemperature conditions.
- Support for up to 9 devices on the SMBus.
- Standby mode for power saving (controlled via software or hardware).
- ESD protection and latch-up testing compliance.
- Fault detection for diode connection.
Applications
- Desktop computers
- Notebook computers
- Smart battery packs
- Industrial controllers
- Telecommunications equipment
Q & A
- What is the NE1617A used for? The NE1617A is used as a two-channel temperature monitor for microprocessor systems, measuring both local and remote temperatures.
- What types of sensors can the NE1617A work with? The NE1617A can work with diode-connected transistors, either discrete NPN/PNP types or those built into other dies like some Intel microprocessors.
- How is the temperature data accessed? Temperature data is accessed via a 2-wire SMBus interface.
- Can the temperature update rate be adjusted? Yes, the temperature update rate is programmable via the SMBus.
- Does the NE1617A have alarm features? Yes, it has programmable alarms for overtemperature and undertemperature conditions.
- How many NE1617A devices can be on the same SMBus? Up to 9 devices can be on the same SMBus, determined by two address pins.
- What is the standby mode used for? The standby mode is used to save power and can be controlled via software or hardware.
- What kind of ESD protection does the NE1617A have? The NE1617A exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101.
- What are some common applications of the NE1617A? Common applications include desktop computers, notebook computers, smart battery packs, industrial controllers, and telecommunications equipment.
- How is fault detection handled in the NE1617A? The NE1617A has a fault detector for the diode connection, which checks the connection during temperature conversions and sets proper flags if a fault condition occurs.
