NE1618DS Philips Semiconductors, NE1618DS Datasheet

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NE1618DS

Manufacturer Part Number
NE1618DS
Description
Temperature monitor for microprocessor systems
Manufacturer
Philips Semiconductors
Datasheet

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Product data
Supersedes data of 2001 Oct 03
File under Integrated Circuits, IC11 Handbook
NE1618
Temperature monitor for
microprocessor systems
INTEGRATED CIRCUITS
2002 Jan 04

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NE1618DS Summary of contents

Page 1

NE1618 Temperature monitor for microprocessor systems Product data Supersedes data of 2001 Oct 03 File under Integrated Circuits, IC11 Handbook INTEGRATED CIRCUITS 2002 Jan 04 ...

Page 2

... Hz). There is also an alarm that senses either an over or under temperature condition. The trip points for this alarm are also ORDERING INFORMATION PART NUMBER NE1618DS NOTE: 1. Also called “SSOP16”. 2002 Jan 04 programmable. The device can have addresses (determined by 2 address pins), so there can the NE1618 on the SMBus ...

Page 3

... Philips Semiconductors Temperature monitor for microprocessor systems FUNCTIONAL BLOCK DIAGRAM ONE-SHOT REGISTER LOCAL TEMP CONTROL SENSOR LOGIC D+ A-TO-D ANALOG CONVERTER MUX D– ADD1 ADD0 ALERT DEVICE ID DEVICE REV V GND GND TEST1 TEST5 DD 2002 Jan 04 STDBY CONFIGURATION REGISTER CONVERSION RATE REGISTER LOCAL TEMP HIGH ...

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... Philips Semiconductors Temperature monitor for microprocessor systems TYPICAL OPERATING CIRCUIT REMOTE SENSOR SHIELDED TWISTED PAIR (NOTE 1) NOTES: 1. May be required if remote diode noisy environment and/or several feet from the NE1618. 2. May be required in noisy environment 2200 pF may be used. ABSOLUTE MAXIMUM RATINGS PARAMETER V to GND ...

Page 5

... Philips Semiconductors Temperature monitor for microprocessor systems ELECTRICAL CHARACTERISTICS +120 C; unless otherwise noted. DD amb PARAMETER PARAMETER Temperature resolution Local temperature error +100 C amb +120 C amb Remote temperature error T remote ( resolution remote Extended Remote temp error T remote (0.125 C resolution remote 2 Extended relative temp error ...

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... Philips Semiconductors Temperature monitor for microprocessor systems SMBus INTERFACE AC SPECIFICATIONS +125 C unless otherwise noted. DD amb These specifications are guaranteed by design and not tested in production. SYMBOL PARAMETER V Logic input high voltage for STBY, SCLK, SDATA IH V Logic input low voltage for STBY, SCLK, SDATA ...

Page 7

... Philips Semiconductors Temperature monitor for microprocessor systems FUNCTIONAL DESCRIPTION Serial bus interface The NE1618 can be connected to a compatible 2-wire serial interface System Management Bus (SMBus slave device under the control of a master device, using two device terminals SCLK and SDATA. The controller will provide a clock signal to the device SCLK pin and write/read data to/from the device through the device SDATA pin ...

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... Philips Semiconductors Temperature monitor for microprocessor systems Table 2. Register assignments REGISTER NAME COMMAND BYTE RDID FEH RDRV FFH RIT 00H RET 01H REET 10H RS 02H RC 03H RCR 04H RIHL 05H RILL 06H REHL 07H RELL 08H WC 09H WCR 0AH WIHL 0BH ...

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... Philips Semiconductors Temperature monitor for microprocessor systems free-running mode. In hardware standby mode, the A-to-D converter is disabled and conversion operation is inhibited. Notice that if a hardware standby command is received when the device is in free-running mode with a conversion is in progress, the conversion cycle will stop and the register data will not be updated. ...

Page 10

... Philips Semiconductors Temperature monitor for microprocessor systems Configuration register The configuration register is used to mask the Alert interrupt and/or to put the device in software standby mode. Only two bits 6 and 7 of this register are used as listed in Table 5. Bit 7 is used to mask the device ALERT output from Alert interruption when this bit is set to 1, and bit 6 is used to activate the standby software mode when this bit is set ...

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... Philips Semiconductors Temperature monitor for microprocessor systems Status register The content of the status register reflects condition status resulting from all of these activities: comparisons between temperature measurements and temperature limits, the status of ADC conversion, and the hardware condition of the connection of external diode to the device. Bit assignments and bit functions of this register are listed in Table 7 ...

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... Philips Semiconductors Temperature monitor for microprocessor systems Table 9. SMBus Interface Protocols SMBus INTERFACE PROTOCOLS: WRITE BYTE FORMAT (To write a data byte to the device register SCL SDA DEVICE ADDRESS SCL (CONT) SDA (CONT) DATA TO BE WRITTEN TO RGTR READ BYTE FORMAT (To read a data byte from the device register): ...

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... Philips Semiconductors Temperature monitor for microprocessor systems PC BOARD LAYOUT CONSIDERATION Because the NE1618 is used to measure a very small voltage from the remote sensor, care must be taken to minimize noise induced at the sensor inputs, especially in the computer motherboard noisy environment. These precautions should be considered: – ...

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... Philips Semiconductors Temperature monitor for microprocessor systems SSOP16: plastic shrink small outline package; 16 leads; body width 3.9 mm; lead pitch 0.635 mm 2002 Jan 04 14 Product data NE1618 SOT519-1 ...

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... Philips Semiconductors Temperature monitor for microprocessor systems 2002 Jan 04 NOTES 15 Product data NE1618 ...

Page 16

... Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. ...

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