NE1618

INTEGRATED CIRCUITS NE1618 Temperature monitor for microprocessor systems Product data Supersedes data of 2001 Oct 03 File under Integrated Circuits, IC11 Handbook 2002 Jan 04 Philips Semiconductors Philips Semiconductors Product data Temperature monitor for microprocessor systems NE1618 FEATURES Monitors local and remote temperature Accuracy – ± 2 °C local (on-chip) sensor – ± 1.5 °C remote sensor with 1 °C resolution – ± 1.0 °C remote sensor with 0.125 °C resolution programmable. The device can have 1 of 9 addresses (determined by 2 address pins), so there can be up to 9 of the NE1618 on the SMBus. It can also be put in a standby mode (in order to save power). This can be done either with software (over the SMBus) or with hardware (using the STBY pin). No calibration required Programmable over/under temperature alarm SMBus 2-wire serial interface 3 V to 3.6 V supply range 80 µA supply current in operating mode 3 µA (typical) supply current in standby mode Small 16-lead QSOP package APPLICATIONS PIN CONFIGURATION TEST1 VDD 1 2 16 TEST16 15 STBY 14 SCLK D+ 3 D– TEST5 ADD1 GND GND 4 5 6 7 8 NE1618 13 TEST13 12 SDATA 11 ALERT 10 ADD0 9 TEST9 Desktop computers Notebook computers Smart battery packs Industrial controllers Telecom equipment DESCRIPTION The NE1618 is an accurate two-channel temperature monitor. It measures the temperature of itself and the temperature of a remote sensor. It can replace the NE1617 for a more precise measure...