MLX90247 Datasheet, PDF (3/9 Pages) List of Unclassifed Manufacturers – Discrete Infrared Thermopile Detectors

MLX90247 family
Discrete Infrared Thermopile Detectors
3. Glossary of Terms
IR: Infrared. Every object emits infrared radiation in relation to its temperature. This effect can be used to
measure the temperature without the need for physical contact.
PTC: On-chip thermistor which resistance increases with rising temperature (Positive Thermal Coefficient)
t_bb: Black body (object temperature)
t_a: Ambient (die) temperature
4. Pin Definitions and Descriptions
TO-39 package - connections
1
P in Sy m b o l D e s c r ip t io n
1 O u tIr+
I nf r a r e d T h e r m o p i l e p o s i t i v e o u t p u t
2
4
2 R s e ns
T h e r m i s t o r - a m b i e nt ( d i e ) t e m p e r a t u r e s e ns o r
3 O u tIr-
I nf r a r e d T h e r m o p i l e ne g a t i v e o u t p u t
4 Vs s
T h e r m i s t o r g r o u nd / c a s e p o t e nt i a l
3
Top view = pins down
3901090247
Rev. 004
Page 3 of 9
Data Sheet
Oct/07