SMBus-compatible, 8-pin, remote/local digital temperature sensor with overtemperature alarms

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.

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.

Block Diagram

Block Diagram

Why Used

  • On-chip local temperature sensing within ±2 °C
  • Temperature range of −40 °C to +125 °C
  • Offset registers available for adjusting the remote temperature accuracy
  • SMBus 2.0 compatible interface, supports TIMEOUT
  • I²C-bus Standard-mode and Fast-mode compatible
  • SO8, TSSOP8 and HVSON8 packages

Where Used

  • 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


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