●Overview
●The NXP Semiconductors SA56004X is an SMBus compatible, 11-bit remote/local digital temperature sensor with overtemperature alarms. The remote channel of the SA56004X 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.
●Undertemperature and overtemperature 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.
●The SA56004X is available in the SO8, TSSOP8 and HVSON8 packages. SA56004X has 8 factory-programmed device address options. The SA56004X is pin-compatible with the LM86, MAX6657/8, and ADM1032.
●MoreLess
●## Features
● Accurately senses temperature of remote microprocessor thermal diodes or diode connected transistors within ±1 °C
● On-chip local temperature sensing within ±2 °C
● Temperature range of −40 °C to +125 °C
● 11-bit, 0.125 °C resolution
● 8 different device addresses are available for server applications. The SA56004ED with marking code 56004E, and SA56004EDP with marking code 6004E are 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-mode and Fast-mode compatible
● SO8, TSSOP8 and HVSON8 packages
● Programmable conversion rate (0.0625 Hz to 26 Hz)
● Undervoltage lockout prevents erroneous temperature readings
● Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
●## Target Applications
● System thermal management in laptops, desktops, servers and workstations
● Computers and office electronic equipment
● Electronic test equipment and instrumentation
● HVAC
● Industrial controllers and embedded systems
●## Features
