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PDF MLX90621 Data sheet ( Hoja de datos )
| Número de pieza | MLX90621 | |
| Descripción | 16x4 IR array | |
| Fabricantes | Melexis | |
| Logotipo |  |
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MLX90621
16x4 IR array
Datasheet
Features and Benefits
Small size, low cost 16x4 pixels IR array
Easy to integrate
Industry standard four lead TO39 package
Factory calibrated infrared temperature
measurement.
Calibration parameters stored in EEPROM.
Noise Equivalent Temperature Difference (NETD)
0.20K RMS @4Hz refresh rate
I2C compatible digital interface
Programmable frame rate 0.5Hz…512Hz
2.6V supply voltage
Current consumption less than 9mA
Sleep mode consumption less than 7µA
Measurement start trigger for synchronization
with external control unit
3 FOV - 40°x10°, 60°x16° and 120°x25°
Ta -40°C to 85°C
To -50 0°C to 300°C
Complies with RoHS regulations
Applications Examples
High precision non-contact temperature
measurements;
Temperature sensing element for residential,
commercial and industrial building air
conditioning;
Microwave ovens
Home appliances with temperature control;
Thermal Comfort sensor in automotive Air
Conditioning control system;
Passenger classification
Automotive blind angle detection;
Industrial temperature control of moving parts;
Identifying thermal leaks in homes
Thermal scanners
Security / safety gates
Intrusion / Movement detection;
Presence detection / Person localization
Ordering Information
Part No.
MLX90621
Temperature
Code
E (-40°C to 85°C)
Package
Code
SF (TO-39)
(1) Supply Voltage
B = 2.6V
Example:
MLX90621ESF-BAB-000-TU
Option Code
-X X X
(1) (2) (3)
(2) Number of
thermopiles:
A = 16X4
Standard
part
-000
Packing
form
-TU
(3) Package options:
A = 120°x25° FOV
B = 60°x16° FOV
C = reserved
D = 40°x10° FOV
Functional diagram
General Description
Digital Active Thermopile Array
Digital filtering
RAM memory
EEPROM
I2C interface
CLK SDA
VDD
VSS
The MLX90621 is a fully calibrated 16x4 pixels IR array
in an industry standard 4-lead TO-39 package. It
contains 2 chips in one package: the MLX90670 (IR
array with signal conditioning electronics) and the
24AA02 (256x8 EEPROM) chip.
The MLX90621 contains 64 IR pixels with dedicated
low noise chopper stabilized amplifier and fast ADC
integrated. A PTAT (Proportional To Absolute
Temperature) sensor is integrated to measure the
ambient temperature of the chip. The outputs of both
IR and PTAT sensors are stored in internal RAM and
are accessible through I2C.
39001090621
Rev 3.0
Page 1 of 49
Datasheet IR16x4
15 September 2016
1 page  
MLX90621
16x4 IR array
Datasheet
2. Glossary of terms
POR
PTAT
IR
IR_data
ADC
Ta
To
TGC
FOV
nFOV
ESD
EMC
I2C
SDA
SCL
FpS
MD
SD
TBD
NA
Power On Reset
Proportional To Absolute Temperature sensor (package temperature)
Infra Red
Infrared data (raw data from ADC proportional to IR energy received by the sensor)
Analog To Digital Converter
Ambient Temperature measured from the chip – (the package temperature)
Object Temperature, ‘seen’ from IR sensor
Temperature Gradient Coefficient
Field Of View
Field Of View of N-th pixel
Electro-Static Discharge
Electro-Magnetic Compatibility
Inter-Integrated Circuit communication protocol
Serial Data
Serial Clock
Frames per Second – data refresh rate
Master Device
Slave Device
To Be Defined
Not Applicable
Table 1 Glossary of terms
3. Absolute Maximum ratings
Parameter
Supply Voltage, VDD (over voltage)
Supply Voltage, VDD (operating max)
RevevroslevoVltoalgtaegveol(teaagceh) pin)
Operating Temperature Range, TA
Storage Temperature Range, TS
ESD Sensitivity (AEC Q100 002)
DC sink current, SDA
DC source current, SDA
DC clamp current, SDA
DC source current, SCL
DC clamp current, SCL
MLX90621
5.5V
3.6V
-0.3 V
-40…+85C
-40…+125C
4kV
50 mA
NA (open drain)
25 mA
NA (input only)
25 mA
Table 2 Absolute maximum ratings for MLX90621
Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute-maximum-rated
conditions for extended periods may affect device reliability.
39001090621
Rev 3.0
Page 5 of 49
Datasheet IR16x4
15 September 2016
5 Page 
MLX90621
16x4 IR array
Datasheet
Slave address
Command
SDA
S1 1 0 0 0 0 0 WA 0 0 0 0 0 0 1 1 A
LSByte check
(LSByte - 0x55)
A
LSByte data
MSByte check
(MSByte - 0x55)
MSByte data
(15:11)
(9:8)
A A 1 AP
SCL
Figure 6 Write configuration register (SA = 0x60, command = 0x03)
NOTE: The user must ensure that the bit 10 (POR or Brown-out flag) in Configuration register is set to “1” by the
MD. Furthermore, this bit must be checked regularly and if it is cleared it indicates that the device has been reset
and the initialisation procedure must be redone.
Example: If the value that has to be uploaded is 0x463E the following sequence must be sent:
1. Start condition (Falling edge of SDA while SCL is high)
2. Slave address (SA=0x60) plus write bit = 0xC0
3. Command = 0x03
4. LSByte check = LSByte – 0x55 = 0x3E – 0x55 = 0xE9
5. LSbyte = 0x3E
6. MSByte check = MSByte – 0x55 = 0x46 – 0x55 = 0xF1
7. MSbyte = 0x46
8. Stop condition (Rising edge of SDA while SCL is high)
The default configuration is:
- IR and Ta refresh rate = 1Hz;
- Normal mode (no sleep);
- I2C FM+ mode enabled (maximum bit transfer up to 1000 Kbit/s);
- ADC low reference enabled;
7.1.1. Reading configuration
7.1.1.1 Reading configuration register (EEPROM data)
Slave address
Command
Start address
Address step
Number of reads
Slave address
SDA
S1 1 0 0 0 0 0 WA 0 0 0 0 0 0 1 0 A 1 0 0 1 0 0 1 0 A 0 0 0 0 0 0 0 0 A 0 0 0 0 0 0 0 1 A S1 1 0 0 0 0 0 R A
Configuration value
LSByte
A
Configuration value
MSByte
AP
SCL
Figure 7 Reading configuration register (SA = 0x60, command = 0x02,
Start address = 0x92, Address step = 0x00, Number of reads = 0x01)
7.1.1.2 Reading oscillator trimming register (EEPROM data)
Slave address
Command
Start address
Address step
Number of reads
Slave address
SDA
S1 1 0 0 0 0 0 WA 0 0 0 0 0 0 1 0 A 1 0 0 1 0 0 1 1 A 0 0 0 0 0 0 0 0 A 0 0 0 0 0 0 0 1 A S1 1 0 0 0 0 0 R A
Oscillator trim value
LSByte
A
Oscillator trim value
MSByte
AP
SCL
Figure 8 Reading configuration register (SA = 0x60, command = 0x02,
Start address = 0x93, Address step = 0x00, Number of reads = 0x01)
39001090621
Rev 3.0
Page 11 of 49
Datasheet IR16x4
15 September 2016
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MLX90621.PDF ] | |
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