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SA56004CD Datasheet(PDF) 2 Page - NXP Semiconductors |
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SA56004CD Datasheet(HTML) 2 Page - NXP Semiconductors |
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2 / 23 page  Philips Semiconductors Product data sheet SA56004X ±1 °C accurate, SMBus-compatible, 8-pin, remote/local digital temperature sensor with over temperature alarms 2 2004 Oct 06 GENERAL DESCRIPTION The Philips SA56004X is an SMBus compatible, 11-bit remote/local digital temperature sensor with over temperature alarms. The remote channel of the SA56004 monitors a diode junction, such as a substrate PNP of a microprocessor or a diode connected transistor such as the 2N3904 (NPN) or 2N3906 (PNP). With factory trimming, remote sensor accuracy of ±1°C is achieved. Under and over temperature alert thresholds can be programmed to cause the ALERT output to indicate when the on-chip or remote temperature is out of range. This output may be used as a system interrupt or SMBus alert. The T_CRIT output is activated when the on-chip or remote temperature measurement rises above the programmed T_CRIT threshold register value. This output may be used to activate a cooling fan, send a warning or trigger a system shutdown. To further enhance system reliability, the SA56004X employs an SMBus time-out protocol. The SA56004X has a unique device architecture which is patented (U.S. patent #6542020). The SA56004X is available in the SO8 and TSSOP8 packages. SA56004X has 8 factory-programmed, device address options. The SA56004X is pin-compatible with the LM86, MAX6657/8, and ADM1032. Patents Notice is herewith given that the subject device uses one or more of the following patents and that each of these patents may have corresponding patents in other jurisdictions: Patent No. US 6,542,020 B2 — owned by Koninklijke Philips Electronics N.V., Eindhoven (NL). SO8 TSSOP8 FEATURES • Accurately senses temperature of remote microprocessor thermal diodes or diode connected transistors within ±1 °C • On-chip local temperature sensing • 11-bit, 0.125 °C resolution • 8 different device addresses are available for server applications. The SA56004ED/EDP with marking code 56004E/600E is address compatible with the National LM86, the MAX6657/8 and the ADM1032. • Offset registers available for adjusting the remote temperature accuracy • Programmable under/overtemperature alarms: ALERT and T_CRIT • SMBus 2.0 compatible interface, supports TIMEOUT • Operating voltage range: 3.0 V to 3.6 V • I2C-bus standard and fast mode compatible • TSSOP8 and SO8 packages • Programmable conversion rate (0.0625 Hz to 26 Hz) • Undervoltage lockout prevents erroneous temperature readings • Latch-up testing is done to JESDEC Standard JESD78 which exceeds 100 mA APPLICATIONS • System thermal management in laptops, desktops, servers and workstations • Computers and office electronic equipment • Electronic test equipment & instrumentation • HVAC • Industrial controllers and embedded systems |
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