SS8017 Datasheet, PDF (1/16 Pages) Silicon Standard Corp. – Two Remote Temperature Sensors with SMBus Serial Interface and System Reset

SS8017
Two Remote Temperature Sensors with
SMBus Serial Interface and System Reset
Features
Two channels: measures both remote and local
temperatures
No calibration required
SMBus 2-wire serial interface
Programmable under/over-temperature alarms
SMBus alert response supported
Accuracy:
±1°C (+60°C to +100°C, remote)
±3°C (+60°C to + 100°C, local)
Average supply current during conversion of
320µA (typ)
Supply range of +3V to +5.5V
Small 8-lead SO package
Applications
Desktop and Notebook
Computers
Smart Battery Packs
LAN Servers
Industrial Controllers
Central Office
Telecom Equipment
Test and Measurement
Multi-Chip Modules
Ordering Information
Description
The SS8017 contains a precise digital thermometer, a
system-reset circuit, and a programmable thermal
shutdown signal.
The thermometer reports the temperature of two re-
mote sensors. The remote sensors are di-
ode-connected transistors, typically a low-cost, easily
mounted 2N3904 NPN type which replaces conven-
tional thermistors or thermocouples. Remote accuracy
is ±5°C for multiple transistor manufacturers, with no
calibration needed. The remote channel can also
measure the die temperature of other ICs, such as mi-
croprocessors, that contain an on-chip, di-
ode-connected transistor.
The 2-wire serial interface accepts standard System
Management Bus (SMBus^TM) Write Byte, Read Byte,
Send Byte, and Receive Byte commands to program
the alarm thresholds and to read temperature data. The
data format is 7 bits plus sign, with each bit corre-
sponding to 1°C, in two’s-complement format. Meas-
urements can be done automatically and autono-
mously, with the conve rsion rate programmed by the
user or programmed to operate in a single-shot mode.
The adjustable rate allows the user to control the
supply-current drain.
SS8017XX
Packing type
TR: Tape and reel
Example: SS8017TR
à SS8017 shipped in tape and reel
Rev.2.01 6/06/2003
www.SiliconStandard.com
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