MLX90614 family Single and Dual Zone Infra Red Thermometer in TO-39 8.5.1. Single PWM format ... 25 8.5.2. Extended PWM format ... 26 8.5.3. Customizing the temperature range for PWM output ... 27 8.6. Switching Between PWM / Thermal relay and SMBus communication .. 29 8.6.1. PWM is enabled .. 29 8.6.2. Request condition ... 29 8.6.3. PWM is disabled ... 29 8.7. Computation of ambient and object temperatures ... 30 8.7.1. Ambient temperature Ta .. 30 8.7.2. Object temperature To ... 30 8.7.3. Calculation flow .. 31 8.8. Thermal relay .. 32 9. 9 . U n U i n q i u q e u e F e F a e t a ur u e r s e .. . .. . .. . .. 33 3 10 1 . 0 . P e P r e f r o f r o m r a m n a c n e c e G r G a r p a h p s h .. . .. . .. . .. . 34 3 10.1. Temperature accuracy of the MLX90614 .. 34 10.1.1. Standard accuracy .. 34 10.1.2. Medical accuracy .. 36 10.1.3. Temperature reading dependence on VDD .. 36 10.2. Field Of View (FOV) ... 38 11 1 . 1 . A p A p p l p ilc i a c t a i t o i n o s n s I n I f n o f r o m r a m t a io i n o .. . .. . ... 42 4 11.1. Use of the MLX90614 thermometer in SMBus configuration .. 42 11.2. Use of multiple MLX90614s in SMBus configuration ... 42 11.3. PWM output operation .. 42 11.4. Thermal alert / thermostat .. 43 11.5. High voltage source operation ... 44 12 1 . 2 . A p A p p l p ilc i a c t a i t o i n o n C o C m o m m e m n e t n s t .. . .. . .. . 45 4 13 1 . 3 St S an a da d rd r d inf n o f rm r a m t a io i n n re r g e a g rd r i d ng n g ma m nu n f u ac a t c ur u a r bi b lit i y t y of o f Me M l e e l x e i x s i s pr p o r d o u d c u t c s s wi w t i h t h di d f i f f er e e r n e t n so s l o d l e d r e i r n i g n g pr p o r c o e c s e s s e s s e .. . .. . .. . .. 47 4 14 1 . 4 . E S E D S D P r P e r c e a c u a t u io i n o s n .. . .. . .. . 47 4 15 1 . 5 . F A F Q A .. . .. . .. . ... 48 4 16 1 . 6 . P a P c a k c a k g a e g e I n I f n o f r o m r a m t a io i n o .. . .. . .. . 50 5 16.1. MLX90614xxA ... 50 16.2. MLX90614xCC ... 50 REVISION 13 - 13 SEPTEMBER 2019 Page 5 of 57
