MLX90614ESF-BAA Melexis Inc, MLX90614ESF-BAA Datasheet - Page 27
![IC THERMOMETER IR 3V TO-39](/photos/7/49/74942/mlx90614esf-baa_sml.jpg)
MLX90614ESF-BAA
Manufacturer Part Number
MLX90614ESF-BAA
Description
IC THERMOMETER IR 3V TO-39
Manufacturer
Melexis Inc
Datasheet
1.MLX90614ESF-BAA.pdf
(49 pages)
Specifications of MLX90614ESF-BAA
Function
Thermometer, Thermostat
Topology
ADC (Sigma Delta), Voltage Regulator
Sensor Type
Internal
Sensing Temperature
-40°C ~ 85°C
Output Type
PWM, SMBus™
Output Alarm
No
Output Fan
No
Voltage - Supply
2.4 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
TO-39
For Use With
EVB90614 - BOARD EVAL FOR MLX90614
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
90614BAA
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MLX90614ESF-BAA
Manufacturer:
Melexis Inc
Quantity:
1 875
Company:
Part Number:
MLX90614ESF-BAA-000-TU
Manufacturer:
TSC
Quantity:
33 000
Part Number:
MLX90614ESF-BAA-000-TU
Manufacturer:
MELEXIS/迈来芯
Quantity:
20 000
Processing ambient temperature includes:
Processing of the object temperature consists of three parts. The first one is common for both IR sensors, the
third part can be skipped if only one IR sensor is used.
PWM calculation:
Note*: The measurements with programmable filter length for FIR filter use the same EEPROM cells for N.
Note**: The IIR filter with programmable filter length uses the same EEPROM cells for L.
3901090614
Rev 006
Offset measurement with fixed length FIR filter
Additional filtering with fixed length IIR filter. The result is stored into RAM as T
Temperature sensor measurement using programmable length FIR *.
Offset compensation
Additional processing with programmable length IIR **. The result is stored into RAM as T
Calculation of the ambient temperature. The result is stored into RAM as T
IR offset:
Object temperature:
Recalculate the data for PWM with 10 bit resolution
Load data into PWM module
T
T
T
D
OS
DATAcomp
T
OS
= IIR(L
T
DATA
T
A
= IIR(L
Offset comp
Initialization
Ta
A
Offset meas
T
= meas(N
calculation
filtering
filtering
= meas(N
A
Ta
= T
meas
1
Offset measurement with a fixed length FIR
Additional filtering with a fixed length IIR. The result is stored into RAM as IR
Gain measurement with fixed length FIR filter
Offset compensation
Additional gain filtering with fixed length IIR, storing the result into RAM as IR
Gain compensation calculation, the result is stored into RAM as K
IR1 sensor:
IR2 sensor:
,T
Tos
DATA
DATAcomp
,OS
Tos
-T
Ta
Ta
)
OS
)
)
)
IR sensor measurement with programmable length FIR filter *.
Offset compensation
Gain compensation
Filtering with programmable length IIR filter**, storing the result into RAM as IR1
Calculation of the object temperature. The result is available in RAM as T
IR sensor measurement with programmable length FIR filter *.
Offset compensation
Gain compensation
Filtering with programmable length IIR filter**, storing the result into RAM as IR2
Calculation of the object temperature. The result is available in RAM as T
IR
IR
IR
OS
IR
OS
G
IR Offset meas
Gcomp
K
Gm
= IIR(L
IR
Offset comp
= IIR(L
G
Gain drift
= meas(N
= meas(N
calculation
filtering
filtering
= IR
1
2
Figure 19: Software flow
G
IRos
Gm
,IR
,OS
- IR
Gcomp
IRos
IRg
OS
Page 27 of 49
IR
)
)
)
)
IR1
IR1
IR1
Infra Red Thermometer in TO-39
IR1
T
Dcomp
OBJ1
D
Offset comp
Dg
Gain comp
= IIR(L
IR1 meas
D
= IR1
= meas(N
filtering
calculation
= IR1
2
3
Dcomp
IR
,IR1
D
- IR
*K
IR
Dg
)
OS
G
)
Single and Dual Zone
G
A
IR2
Load PWM registers
IR2
IR2
OS
IR2
PWM calculation
T
Dcomp
OBJ2
D
Offset comp
Dg
Gain comp
September 30, 2010
= IIR(L
IR2 meas
D
= IR2
= meas(N
filtering
calculation
= IR2
OS
3
G
Dcomp
.
IR
.
,IR2
D
- IR
D
OBJ1
OBJ2
IR
*K
Dg
Data Sheet
.
)
OS
G
)
.
.
D
D
.