NE1617 NXP Semiconductors, NE1617 Datasheet
NE1617
Available stocks
Related parts for NE1617
NE1617 Summary of contents
Page 1
... NE1617 Temperature monitor for microprocessor systems Product specification INTEGRATED CIRCUITS 1999 Mar 19 ...
Page 2
... The trip points for this alarm are also programmable. The device can have addresses (determined by 2 address pins), so there can the NE1617 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 STANDBY pin) ...
Page 3
... ADDRESS REMOTE LOW TEMP DECODER THRESHOLD INTERRUPT MASKING TEST5 TEST9 TEST13 TEST16 3 Product specification NE1617 COMMAND POINTER REGISTER LOCAL TEMP HIGH LIMIT REGISTER LOCAL TEMP LOW LIMIT REGISTER REMOTE TEMP HIGH LIMIT REGISTER REMOTE TEMP LOW LIMIT REGISTER STATUS REGISTER SMBUS INTERFACE ...
Page 4
... 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 NE1617. 2. May be required in noisy environment 2200pF may be used. ABSOLUTE MAXIMUM RATINGS PARAMETER V to GND DD D+, ADD0, ADD1 D– ...
Page 5
... DD Conversion rate = 0.25/sec Conversion rate = 2/sec SMBus inactive From stop bit to conversion complete, both channels Percentage error in programmed rate HIGH level LOW level Momentary as the address is being read (Notes 3 and Product specification NE1617 LIMITS UNIT UNIT MIN. TYP. MAX < < ...
Page 6
... Setup time of stop condition. SU:STO Delay from SCL L–H to SDA stop. t Fall time of SCL & SDA LOW SCLK t HD:STA t HD:DAT SDATA t BUF P S NOTE: The NE1617 does not include the SMBUS timeout capability (t 1999 Mar 19 CONDITIONS V = = L=0. GND IN DD ...
Page 7
... SL01214 Figure 5. Temperature error vs. common_mode noise 5 0 –5 –10 –15 –20 0 1000 10000 SL01211 Figure 7. Temperature error vs. D+to D– capacitance 7 Product specification NE1617 = 100mV and AC coupled to D– 100 1000 10000 FREQUENCY (kHz) SL01212 frequency 100 D+ to D– CAPACITANCE (nF) ...
Page 8
... TIME (SEC) Figure 10. Response to thermal shock immersed in +115 C fluorinert bath 1999 Mar 19 150 130 110 1000 SL01217 Figure 9. Operating supply current vs. conversion rate 8 10 SL01215 8 Product specification NE1617 0.0625 0.25 1.0 4.0 0.125 0.5 2.0 8.0 CONVERSION RATE (Hz) SL01216 @ ...
Page 9
... D+ and D– is recommended. Capacitance higher than 3300pF will introduce measurement error due to the rise time of the switched current source. Address logic The address pins of the NE1617 can be forced into one of three levels: Low (GND), High ( not connected (NC). Because the DD ...
Page 10
... Write internal temp HIGH limit byte n/a Write internal temp LOW limit byte n/a Write external temp HIGH limit byte n/a Write external temp LOW limit byte n/a One shot command n/a Reserved n/a Reserved n/a Reserved n/a Reserved 10 Product specification NE1617 FUNCTION ...
Page 11
... In hardware standby mode, the one shot is inhibited. 1 011 1111 11 Product specification NE1617 CONVERSION AVERAGE RATE (Hz) SUPPLY CURRENT ( A Typ 3.3V) DD ...
Page 12
... Indicate address B5 of alerted device 5 ADD5 Indicate address B4 of alerted device 4 ADD4 Indicate address B3 of alerted device 3 ADD3 Indicate address B2 of alerted device 2 ADD2 Indicate address B1 of alerted device 1 ADD1 Indicate address B0 of alerted device 0 (LSB) 1 Logic 1 12 Product specification NE1617 is required, DD FUNCTION ...
Page 13
... C for low limit. – Command pointer register is set to 00 for quickly reading the RIT. Fault detection The NE1617 has a fault detector to the diode connection. The connection is checked when a conversion is initiated and the proper flags are set if the fault condition has occurred. ...
Page 14
... A shielded twisted pair is recommended for a long distance remote sensor. Connect the shield of the cable at the device side to the NE1617 GND pin and leave the shield at the remote end unconnected to avoid ground loop. Also notice that the series resistance of the cable may introduce measurement error; 1 can introduce about 0 ...
Page 15
... 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 1999 Mar 19 15 Product specification NE1617 SOT519-1 ...
Page 16
... Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381 1999 Mar 19 [1] Copyright Philips Electronics North America Corporation 1999 Document order number: 16 Product specification NE1617 All rights reserved. Printed in U.S.A. Date of release: 08-99 9397 750 06385 ...