MLX90614ESF-DAA Melexis Inc, MLX90614ESF-DAA Datasheet - Page 11
![IC THERMOMETER IR 3V (MED) TO-39](/photos/18/29/182938/mlx90614esf-daa_sml.jpg)
MLX90614ESF-DAA
Manufacturer Part Number
MLX90614ESF-DAA
Description
IC THERMOMETER IR 3V (MED) TO-39
Manufacturer
Melexis Inc
Datasheet
1.MLX90614ESF-BAA.pdf
(49 pages)
Specifications of MLX90614ESF-DAA
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
3 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
8.3 Block description
8.3.1 Amplifier
A low noise, low offset amplifier with programmable gain is used for amplifying the IR sensor voltage. By
carefully designing the input modulator and balanced input impedance, an offset below 0.5µV is achieved.
8.3.2 Supply regulator and POR
The module can operate from 3 different supplies:
VDD= 5V => MLX90614Axx
VDD=3.3V => MLX90614Bxx (battery or regulated supply)
VDD=8…16V => MLX90614Axx few external components are necessary please refer to “Applications
information” section for information about adopting higher voltage supplies.
The Power On Reset (POR) is connected to Vdd supply. The on-chip POR circuit provides an active (high)
level of the POR signal when the Vdd voltage rises above approximately 0.5V and holds the entire
MLX90614xxx in reset until the Vdd is higher than the specified POR threshold V
different for MLX90614Axx and MLX90614Bxx). During the time POR is active, the POR signal is available as
an open drain at the PWM/SDA pin. After the MLX90614xxx exits the POR condition, the function
programmed in EEPROM takes precedence for that pin.
8.3.3 EEPROM
A limited number of addresses in the EEPROM memory can be changed by the customer. The whole
EEPROM can be read through the SMBus interface.
The addresses To
ranges. For details see section 8.5.3 below in this document
The address Emissivity contains the object emissivity (factory default 1.0 = 0xFFFF), 16 bit.
Where dec2hex[ round( X ) ] represents decimal to hexadecimal conversion with round-off to nearest value
(not truncation). In this case the physical emissivity values are
Erase (write 0) must take place before write of desired data is made.
3901090614
Rev 006
Emissivity = dec2hex[ round( 65535 x
To
To
PWMCTRL
Ta range
Emissivity correction coefficient
Config Register1
SMBus address
max
min
max
, To
min
and Ta range are for customer dependent object and ambient temperature
ID number
ID number
ID number
ID number
Name
Table 5: EEPROM table
EEPROM (32X16)
ε
Page 11 of 49
) ]
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Infra Red Thermometer in TO-39
ε
…
…
= 0.1…1.0.
Address
0x000
0x001
0x002
0x003
0x004
0x005
0x006
0x00D
0x00E
0x00F
0x010
0x018
0x019
0x01A
0x01B
0x01C
0x01D
0x01E
0x01F
…
…
Single and Dual Zone
POR
access
Write
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
…
…
(note that this level is
September 30, 2010
Data Sheet