Measuring the temperature of itself and the temperature of a remote sensor, the NE1617A is an accurate two-channel temperature monitor. The remote sensor is a diode connected transistor. This can be in the form of either a discrete NPN/PNP, such as the 2N3904/2N3906, or a diode connected PNP built into another die, such as is done on some Intel microprocessors.
The temperature of both the remote and local sensors is stored in a register that can be read via a 2-wire SMBus. The temperatures are updated at a rate that is programmable via the SMBus (the average supply current is dependent upon the update rate — the faster the rate, the higher the current).
- Monitors local and remote temperature
- No calibration required
- Programmable overtemperature/undertemperature alarm
- 3 V to 5.5 V supply range; 5.5 V tolerant
- Small 16-lead SSOP (QSOP) package
- Desktop computers
- Notebook computers
- Smart battery packs
- Industrial controllers
- Telecommunications equipment