ADT6501ARJP045 AD [Analog Devices], ADT6501ARJP045 Datasheet - Page 11

• Manufacturer Part Number: ADT6501ARJP045
• Description: Low Cost, 2.7 V to 5.5 V, Micropower Temperature Switches in SOT-23
• Manufacturer: AD [Analog Devices]

Preliminary Technical Data
TEMPERATURE MONITORING
The ADT6501/ADT6502/ADT6503/ADT6504 are ideal for
monitoring the thermal environment within electronic
equipment. For example, the surface-mount package accurately
reflects the exact thermal conditions that affect nearby
integrated circuits.
The ADT650x measure and convert the temperature at the
surface of its own semiconductor chip. When the ADT650x are
used to measure the temperature of a nearby heat source, the
thermal impedance between the heat source and the ADT650x
must be as low as possible.
Rev. PrA | Page 11 of 16
As much as 60% of the heat transferred from the heat source to
the thermal sensor on the ADT650x die is discharged via the
copper tracks, package pins, and bond pads. Of the pins on the
ADT650x, the GND pins transfer most of the heat. Therefore,
to monitor the temperature of a heat source it is recommended
that the thermal resistance between the ADT650x GND pins
and the GND of the heat source is reduced as much as possible.
For example, use the unique properties of the ADT650x to
monitor a high power dissipation microprocessor. The
ADT650x device, in its SOT-23 package, is mounted directly
beneath the microprocessor’s pin grid array (PGA) package.
The ADT650x requires no external characterization.
ADT6501/ADT6502/ADT6503/ADT6504