MLX90614ESF-DCA Melexis Inc, MLX90614ESF-DCA Datasheet - Page 13

• Manufacturer Part Number: MLX90614ESF-DCA
• Description: IC THERMOMETER IR SGL 3V TO-39
• Manufacturer: Melexis Inc

Specifications of MLX90614ESF-DCA

• 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-39-3, TO-205AD, Metal Can
• For Use With: EVB90614 - BOARD EVAL FOR MLX90614
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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On-chip filtering and settling time:
The MLX90614 features configurable on-chip digital filters. They allow customization for speed or noise.
Factory default configurations and the typical settling time and noise for the MLX90614 family are given
below.
Details on the filters are given in the application note “Understanding MLX90614 on-chip digital signal filters”
available from www.melexis.com .
The evaluation board, EVB90614 supported by PC SW allows easy configuration of the filters, while not
requiring in-depth understanding of the EEPROM.
The available filter settings and the settling times they give are listed below. Settling time depends on three
configurations: single/dual zone, IIR filter settings and FIR filter settings. The FIR filter has a straightforward
effect on noise (a 4 times decrease of settling time increases the noise 2 times and vice versa). The IIR filter
provides an additional, spike limiting, feature. Spike limit is also listed and defines to what level the magnitude
of a spike would be limited – for example, 25% denotes that if a 20° C temperature delta spike is measured
the temperature reading by the MLX90614 will spike only 5° C. More details are available in the application
notes from www.melexis.com.
Note: Settling time is in seconds and depends on internal oscillator absolute value.
100% spike limit appears with the IIR filter bypassed, and there is no spike limitation.
3901090614
Rev 006
www.melexis.com
MLX90614 AAA, BAA, DAA
MLX90614 ABA, BBA
MLX90614 ACC, BCC
MLX90614 ACF, BCF
IIR setting
Table 8: factory default IIR and FIR configuration, settling time and typical noise
xxx
100
100
100
100
101
101
101
101
110
110
110
110
111
111
111
111
000
000
000
000
001
001
001
001
010
010
010
010
011
011
011
011
Device
for latest application notes with details on EEPROM settings.
FIR setting
000…011
100
101
110
111
100
101
110
111
100
101
110
111
100
101
110
111
100
101
110
111
100
101
110
111
100
101
110
111
100
101
110
111
Table 9: possible IIR and FIR settings
Settling time, sec
Settling time (s)
0.10
0.14
0.14
1.33
90614xAx
Page 13 of 49
0.04
0.05
0.06
0.10
0.12
0.16
0.22
0.35
0.24
0.30
0.43
0.70
0.26
0.34
0.48
0.78
0.30
0.37
0.54
0.86
0.70
0.88
1.30
2.00
1.10
1.40
2.00
3.30
1.50
1.90
2.80
4.50
Infra Red Thermometer in TO-39
Typical noise, ° C rms
90614xBx, 90614xCx
Not recommended
Settling time (s)
0.05
0.07
0.18
0.10
0.06
0.07
0.10
0.14
0.20
0.24
0.34
0.54
0.38
0.48
0.67
1.10
0.42
0.53
0.75
1.20
0.47
0.60
0.84
1.33
1.10
1.40
2.00
3.20
1.80
2.20
3.20
5.00
2.40
3.00
4.30
7.00
Single and Dual Zone
September 30, 2010
Spike limit
Spike limit
100.0%
100.0%
100.0%
100.0%
80.0%
80.0%
80.0%
80.0%
66.7%
66.7%
66.7%
66.7%
57.0%
57.0%
57.0%
57.0%
50.0%
50.0%
50.0%
50.0%
25.0%
25.0%
25.0%
25.0%
16.7%
16.7%
16.7%
16.7%
12.5%
12.5%
12.5%
12.5%
100%
100%
100%
50%
Data Sheet