MLX90641KSF-BCB-000-TU datasheet, PDF

Datasheet> All Categories > The sensor> The temperature sensor> The temperature sensor mounted on board> MLX90641KSF-BCB-000-TU

Preview

MLX90641KSF-BCB-000-TU: DescriptionBoard mounted temperature sensor 16X12 thermal array sensor, 3Volt, 60deg total FOV, 125C; CategoryThe sensor The temperature sensor The temperature sensor mounted on board; File Size2MB，54 Pages; ManufacturerMelexis; Websitehttps://www.melexis.com/zh; Environmental Compliance

Download Datasheet Parametric Compare View All

MLX90641KSF-BCB-000-TU Online Shopping

Suppliers	Part Number	Price	MOQ	In stock
	MLX90641KSF-BCB-000-TU	-	-	View	Buy Now

MLX90641KSF-BCB-000-TU Overview

Board mounted temperature sensor 16X12 thermal array sensor, 3Volt, 60deg total FOV, 125C

MLX90641KSF-BCB-000-TU Parametric

Parameter Name	Attribute value
Maker	Melexis
Product Category	Board mounted temperature sensor
Supply voltage - min.	3 V
Supply voltage - max.	3.6 V
Interface Type	I2C
Minimum operating temperature	- 40 C
Maximum operating temperature	+ 125 C
closure	No Shutdown
Installation style	Through Hole
Package/box	TO-39-4
product	Temperature Sensors
Encapsulation	Tube
Working power current	12 mA
Factory packaging quantity	1035

Preview

Download Datasheet

View All

MLX90641 16x12 IR array

Datasheet

1. Features and Benefits



Small size, low cost 16x12 pixels IR array

Easy to integrate

Industry standard four lead TO39 package

Factory calibrated

Noise Equivalent Temperature Difference

(NETD) 0.1K @4Hz refresh rate

C compatible digital interface

Programmable refresh rate 0.5Hz…64Hz

3.3V supply voltage

Current consumption ≈ 12mA

2 FOV options – 55°x35° and 110°x75°

Operating temperature -40°C ÷ 125°C

Target temperature -40°C ÷ 300°C

Complies with RoHS regulations

2. Application Examples



High precision non-contact temperature

measurements

Microwave ovens

Intrusion / Movement detection

Temperature sensing element for

residential, commercial and industrial

building air conditioning

Thermal Comfort sensor in automotive Air

Conditioning control system

Passenger classification

Industrial temperature control of moving

parts

Visual IR thermometers

Driver SW for MCU available at:

https://github.com/melexis/mlx90641-

library.git



3. Description

The MLX90641 is a fully calibrated 16x12 pixels

thermal IR array in an industry standard 4-lead

TO39 package with digital interface.

The MLX90641 contains 192 FIR pixels. An

ambient sensor is integrated to measure the

ambient temperature of the chip and supply

sensor to measure the VDD. The outputs of all

sensors IR, Ta and VDD are stored in internal RAM

and are accessible through I

Band gap

reference and

PTAT sensor

Vdd

Regulator for

digital part

34 MHz RC

oscillator

Vss

Array

M pixels

M amplifiers

M ADC

SDA

EEPROM

Storage RAM

I2C

SCL

Figure 1 Block diagram

MLX90641 16x12 IR array

Datasheet

Contents

1. Features and Benefits ............................................................................................................................ 1

2. Application Examples............................................................................................................................. 1

3. Description ............................................................................................................................................ 1

4. Ordering Information ............................................................................................................................ 5

5. Glossary of Terms .................................................................................................................................. 6

6. Pin Definitions and Descriptions ............................................................................................................ 7

7. Absolute Maximum Ratings ................................................................................................................... 7

8. General Electrical Specifications ............................................................................................................ 8

9. False pixel correction ............................................................................................................................. 9

10. Detailed General Description............................................................................................................... 9

10.1. Pixel position ..................................................................................................................................... 9

10.2. Communication protocol ............................................................................................................... 10

10.2.1. Low level ................................................................................................................................... 10

10.3. Measurement mode ....................................................................................................................... 11

10.4. Refresh rate..................................................................................................................................... 11

10.5. Measurement flow ......................................................................................................................... 12

10.6. Address map ................................................................................................................................... 14

10.6.1. Internal registers....................................................................................................................... 14

10.6.2. RAM ........................................................................................................................................... 16

EEPROM ................................................................................................................................................. 17

11. Calculating Object Temperature ........................................................................................................ 20

11.1. Restoring calibration data from EERPOM and calculations.......................................................... 20

11.1.1. Restoring the VDD sensor parameters and VDD calculations ................................................ 20

11.1.2. Restoring the Ta sensor parameters ....................................................................................... 21

11.1.3. Restoring the offset .................................................................................................................. 21

11.1.4. Restoring the Sensitivity

.................................................................................................. 22

11.1.5. Restoring the Kta(i,j) coefficient .............................................................................................. 23

11.1.6. Restoring the Kv(i,j) coefficient ................................................................................................ 23

11.1.7. Restoring the GAIN coefficient (common for all pixel) ........................................................... 24

11.1.8. Restoring the KsTa coefficient (common for all pixel) ............................................................ 24

11.1.9. Restoring corner temperatures (common for all pixel) .......................................................... 24

REVISION 1 – NOVEMBER 16, 2018

[DOCSERVER NR]

Page 2 of 53

MLX90641 16x12 IR array

Datasheet

11.1.10. Restoring the KsTo coefficient

(common for all pixel) .................................... 24

11.1.11. Restoring sensitivity correction coefficients for each temperature range ......................... 25

11.1.12. Restoring Emissivity ................................................................................................................ 25

11.1.13. Restoring the Sensitivity

............................................................................................... 26

11.1.14. Restoring the offset of the CP ................................................................................................ 26

11.1.15. Restoring the Kv CP coefficient .............................................................................................. 26

11.1.16. Restoring the Kta CP coefficient ............................................................................................ 26

11.1.17. Restoring the TGC coefficient ................................................................................................ 26

11.1.18. Restoring calibration resolution control settings ................................................................. 27

11.2. Temperature calculation ................................................................................................................ 27

11.2.1. Example input data ................................................................................................................... 27

11.2.2. Temperature calculation .......................................................................................................... 30

12. Performance graphs .......................................................................................................................... 41

12.1. Accuracy .......................................................................................................................................... 41

12.2. Startup time .................................................................................................................................... 43

12.2.1. First valid data........................................................................................................................... 43

12.2.2. Thermal behavior...................................................................................................................... 43

12.3. Noise performance and resolution ................................................................................................ 44

12.4. Field of view (FOV) .......................................................................................................................... 45

13. Application information ..................................................................................................................... 46

13.1. Electrical considerations ................................................................................................................ 46

13.2. Using the device in “image mode” ................................................................................................ 47

14. Application Comments ...................................................................................................................... 47

15. Mechanical drawings ......................................................................................................................... 49

15.1. FOV 55°............................................................................................................................................ 49

15.2. FOV 110° ......................................................................................................................................... 50

15.3. Device marking ............................................................................................................................... 51

16. Standard Information ........................................................................................................................ 52

17. ESD Precautions................................................................................................................................. 52

18. Revision History Table ....................................................................................................................... 52

19. Contact .............................................................................................................................................. 53

20. Disclaimer .......................................................................................................................................... 53

REVISION 1 – NOVEMBER 16, 2018

[DOCSERVER NR]

Page 3 of 53

MLX90641 16x12 IR array

Datasheet

Tables

Table 1 Ordering information .......................................................................................................................................................... 5

Table 2 Glosarry of terms ................................................................................................................................................................ 6

Table 3 Pin definition ...................................................................................................................................................................... 7

Table 4 Absolute maximum ratings ................................................................................................................................................. 7

Table 5 Electrical specification ........................................................................................................................................................ 8

Table 6 Priorities of subpage controls ............................................................................................................................................15

Table 7 Configuration parameters memory ....................................................................................................................................17

Table 8 EEPROM overview (words) .................................................................................................................................................18

Table 9 Calibration parameters memory (EEPROM - bits) ...............................................................................................................19

Table 10 Calculation example input data ........................................................................................................................................27

Table 11 Calculation example calibration data ................................................................................................................................29

Table 12 Noise performance ..........................................................................................................................................................45

Table 13 Available FOV options ......................................................................................................................................................46

Table 14 Revision history ...............................................................................................................................................................52

Figures

Figure 1 Block diagram ................................................................................................................................................................... 1

Figure 2 MLX90641 Overview and pin description ........................................................................................................................... 7

Figure 3 Pixel in the whole FOV ....................................................................................................................................................... 9

Figure 4 I C write command format (default SA=0x33 is used) ........................................................................................................10

Figure 5 I C read command format (default SA=0x33 is used) .........................................................................................................10

Figure 6 Refresh rate timing ...........................................................................................................................................................11

Figure 7 Recommended measurement flow ...................................................................................................................................12

Figure 8 TV mode reading pattern ..................................................................................................................................................13

Figure 9 MXL90641 memory map ...................................................................................................................................................14

Figure 10 Status register (0x8000) bits meaning .............................................................................................................................14

Figure 11 Control register 1 (0x800D) bits meaning ........................................................................................................................15

Figure 12 I C configuration register (0x800F) bits meaning .............................................................................................................16

Figure 13 RAM memory map (Interleaved mode - default) ..............................................................................................................16

Figure 14 EEPROM to registers mapping .........................................................................................................................................17

Figure 15 EEPROM Hamming and data bit meaning ........................................................................................................................20

Figure 16 To calculation flow .........................................................................................................................................................30

Figure 17 Temperature absolute accuracy - MLX90641BCA .............................................................................................................41

Figure 18 Temperature absolute accuracy - MLX90641BCB .............................................................................................................42

Figure 19 Different accuracy zones depending on device type (BCA on the left and BCB on the right) ..............................................42

Figure 20 MLX90641BCx noise vs refresh rate for different device types .........................................................................................44

Figure 21 MLX90641BCA noise vs pixel and refresh rate at 1Hz and 2Hz .........................................................................................44

Figure 22 MLX90641BCA noise vs pixel and refresh rate at 4Hz, 8Hz and 16Hz ................................................................................44

Figure 23 MLX90641BCB noise vs pixel and refresh rate at 1Hz and 2Hz..........................................................................................45

Figure 24 MLX90641BCB noise vs pixel and refresh rate at 4Hz, 8Hz and 16Hz ................................................................................45

Figure 25 Field Of View measurement ............................................................................................................................................45

Figure 26 MLX90641Bxx electrical connections...............................................................................................................................46

Figure 27 Calculation flow in thermal image mode .........................................................................................................................47

Figure 28 Mechanical drawing of 55° FOV device ............................................................................................................................49

Figure 29 Mechanical drawing of 110° FOV device ..........................................................................................................................50

REVISION 1 – NOVEMBER 16, 2018

[DOCSERVER NR]

Page 4 of 53

MLX90641KSF-BCB-000-TU Related Products

	MLX90641KSF-BCB-000-TU	MLX90641ESF-BCB-000-SP	MLX90641ESF-BCA-000-SP	MLX90641KSF-BCB-000-SP	MLX90641ESF-BCB-000-TU	MLX90641ESF-BCA-000-TU	MLX90641KSF-BCA-000-TU	MLX90641KSF-BCA-000-SP
Description	Board mounted temperature sensor 16X12 thermal array sensor, 3Volt, 60deg total FOV, 125C	Board mounted temperature sensor 16X12 thermal array sensor, 3Volt, 60deg total FOV	Board mounted temperature sensor 16X12 thermal array sensor, 3Volt, 120deg total FOV	Board mounted temperature sensor 16X12 thermal array sensor, 3Volt, 60deg total FOV, 125C	Board mounted temperature sensor 16X12 thermal array sensor, 3Volt, 60deg total FOV	Board mounted temperature sensor 16X12 thermal array sensor, 3Volt, 120deg total FOV	Board mounted temperature sensor 16X12 thermal array sensor, 3Volt, 120deg total FOV, 125C	Board mounted temperature sensor 16X12 thermal array sensor, 3Volt, 120deg total FOV, 125C
Maker	Melexis	Melexis	Melexis	Melexis	Melexis	Melexis	Melexis	Melexis
Minimum operating temperature	- 40 C	- 40 C	- 40 C	- 40 C	-40 °C	- 40 C	- 40 C	- 40 C
Maximum operating temperature	+ 125 C	+ 85 C	+ 85 C	+ 125 C	85 °C	+ 85 C	+ 125 C	+ 125 C
Product Category	Board mounted temperature sensor	Board mounted temperature sensor	Board mounted temperature sensor	Board mounted temperature sensor	-	Board mounted temperature sensor	Board mounted temperature sensor	Board mounted temperature sensor
Supply voltage - min.	3 V	3 V	3 V	3 V	-	3 V	3 V	3 V
Supply voltage - max.	3.6 V	3.6 V	3.6 V	3.6 V	-	3.6 V	3.6 V	3.6 V
Interface Type	I2C	I2C	I2C	I2C	-	I2C	I2C	I2C
closure	No Shutdown	No Shutdown	No Shutdown	No Shutdown	-	No Shutdown	No Shutdown	No Shutdown
Installation style	Through Hole	Through Hole	Through Hole	Through Hole	-	Through Hole	Through Hole	Through Hole
Package/box	TO-39-4	TO-39-4	TO-39-4	TO-39-4	-	TO-39-4	TO-39-4	TO-39-4
product	Temperature Sensors	Temperature Sensors	Temperature Sensors	Temperature Sensors	-	Temperature Sensors	Temperature Sensors	Temperature Sensors
Encapsulation	Tube	Bulk	Bulk	Bulk	-	Tube	Tube	Bulk
Working power current	12 mA	12 mA	12 mA	12 mA	-	12 mA	12 mA	12 mA
Factory packaging quantity	1035	20	20	20	-	1035	1035	20

Recommended Resources

Three-phase four-wire main circuit diagram

Circuit diagram of a diode connected in series across a potentiometer

Simple and practical coil short circuit test circuit

Crystal oscillator using op amp 2

ISOLATED Feedback power supply circuit

555 long delay timer circuit (1)

Shortcut: L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 LA LB LC LD LE LF LG LH LI LJ LK LL LM LN LO LP LQ LR LS LT LU LV LW LX LY LZ M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF MG MH MI MJ MK ML MM MN MO MP MQ MR MS MT MU MV MW MX MY MZ N0 N1 N2 N3 N4 N5 N6 N7 N8 NA NB NC ND NE NF NG NH NI NJ NK NL NM NN NO NP NQ NR NS NT NU NV NX NZ O0 O1 O2 O3 OA OB OC OD OE OF OG OH OI OJ OK OL OM ON OP OQ OR OS OT OV OX OY OZ P0 P1 P2 P3 P4 P5 P6 P7 P8 P9 PA PB PC PD PE PF PG PH PI PJ PK PL PM PN PO PP PQ PR PS PT PU PV PW PX PY PZ Q1 Q2 Q3 Q4 Q5 Q6 Q8 Q9 QA QB QC QE QF QG QH QK QL QM QP QR QS QT QV QW QX QY R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 RA RB RC RD RE RF RG RH RI RJ RK RL RM RN RO RP RQ RR RS RT RU RV RW RX RY RZ

Popular Components