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Details, datasheet, quote on part number:NE1617
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| Part: | NE1617 |
| Category: | Power Management => Supervisory Circuits => System Supervisors/Reset => Temperature sensors |
| Description: | NE1617; Temperature Monitor For Microprocessor Systems;; Package: SOT519-1 (SSOP16) |
| Company: | Philips Semiconductors |
| Datasheet: | Download NE1617 datasheet File size : 134 kB |
| Request For quote: | Find where to buy NE1617
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Datasheet text preview:
INTEGRATED CIRCUITS
NE1617 Temperature monitor for microprocessor systems
Product specification 1999 Mar 19
Philips Semiconductors
Philips Semiconductors
Product specification
Temperature monitor for microprocessor systems
NE1617
FEATURES
· Replacement for Maxim MAX1617 and Analog Devices ADM1021 · Monitors local and remote temperature · Accuracy
± 2°C local (on-chip) sensor ± 3°C remote sensor
PIN CONFIGURATION
TEST VDD 1 2 16 TEST 15 STBY 14 SCLK 13 TEST 12 SDATA 11 ALERT 10 ADD0 9 TEST
D+ 3 D TEST ADD1 GND GND 4 5 6 7 8
· No calibration required · Programmable over/under temperature alarm · SMBus 2-wire serial interface · 3V to 5.5V supply range · 70µa supply current in operating mode · 3µa (typical) supply current in standby mode · Small 16lead QSOP package
APPLICATIONS
SL01202
Figure 1. Pin configuration
PIN FUNCTION DESCRIPTION
PIN # 1 2 3 4 5 6 7 8 FUNCTION TEST VDD D+ D TEST ADD1 GND GND TEST ADD0 ALERT SDATA TEST SCLK STBY DESCRIPTION/COMMENTS Factory use only1 Positive supply2 Positive side of remote sensor Negative side of remote sensor Factory use only1 Device address pin (3-State) Ground Ground Factory use only1 Device address pin (3-State) Open drain output used as interrupt or SMBus alert SMBus serial data input/output open drain Factory use only1 SMBus clock input Hardware standby input pin HIGH = normal operating mode LOW = standby mode Factory use only1
· Desktop computers · Notebook computers · Smart battery packs · Industrial controllers · Telecom equipment
DESCRIPTION
The NE1617 is an accurate two-channel temperature monitor. It measures the temperature of itself and the temperature of a remote sensor. 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). In addition to the normal operation, which is to update the temperature at the programmed rate, there is a one shot mode that will force a temperature update. There is also an alarm that senses either an over or under temperature condition. The trip points for this alarm are also programmable. The device can have 1 of 9 addresses (determined by 2 address pins), so there can be up to 9 of 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).
9 10 11 12 13 14 15
16
TEST
NOTES: 1. These pins should either float or be tied to ground. 2. VDD pin should be decoupled by a 0.1µF capacitor.
ORDERING INFORMATION
PART NUMBER NE1617DS PACKAGE 16-lead QSOP package DRAWING NUMBER SOT5191
1999 Mar 19
2
8532144 21065
Philips Semiconductors
Product specification
Temperature monitor for microprocessor systems
NE1617
FUNCTIONAL BLOCK DIAGRAM
STDBY
ONE-SHOT REGISTER LOCAL TEMP SENSOR CONTROL LOGIC CONVERSION RATE REGISTER
CONFIGURATION REGISTER
COMMAND POINTER REGISTER
LOCAL TEMP HIGH THRESHOLD
LOCAL TEMP HIGH LIMIT REGISTER
LOCAL TEMP DATA REGISTER D+ D ANALOG MUX A-TO-D CONVERTER REMOTE TEMP DATA REGISTER
LOCAL LOW TEMP THRESHOLD
LOCAL TEMP LOW LIMIT REGISTER
REMOTE HIGH TEMP THRESHOLD
REMOTE TEMP HIGH LIMIT REGISTER
ADD1 ADD0
ADDRESS DECODER
REMOTE LOW TEMP THRESHOLD
REMOTE TEMP LOW LIMIT REGISTER
ALERT
INTERRUPT MASKING
STATUS REGISTER
SMBUS INTERFACE
VDD
GND
GND
TEST1
TEST5
TEST9
TEST13
TEST16
SCLK
SDATA
SL01210
1999 Mar 19
3
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