EVB90109
MLX90109 Evaluation Board Manual
Page 9 of 10
REVISION 006 - JUNE 20, 2017
390129010901
5.
Pinning of the EVB90109
Pin number DIL-10
Name
Description
1
COIL
Oscillator Output
2
VSS
Ground
3
SPEED
Data rate selection
4
FAST_DECAY
Fast decay circuit control
5
MODUR3
Modulation Network
6
MODUR2
Modulation Network
7
MODE
Decoding selection
8
CLOCK
Clock signal
9
DATA
Decoded data
10
VDD
Power Supply
Table 2: Pinning of the EVB90109
6.
Components
Reference
Value
Description
R1
39 kohms
Modulation network
R2
8.2 kohms
Modulation network
R3
Not mounted
Additional resistor for the modulation network
C1
Not mounted
Noise cancellation capacitance
C2
Not mounted
Additional capacitance for the modulation network
C3
Not mounted
Additional capacitance for the modulation network
C4
22nF
Tune capacitance
Table 3: Components
Reference
Value
1)
Units
Description
L1
73.7
µH
Coil inductance
Qant
25
Coil quality factor
Zant
1447
kOhm
Antenna Impedance, calculated = ω
0
*L
ant
*Q
ant
Table 4: Reader Coil L1 Electrical Specifications
Reference
Value
1)
Units
Description
H
3
mm
Coil height
OD
18.9
mm
Outside diameter
ID
Number of turns
17
mm
Inside diameter
Nr
52
-
Number of turns
Table 5: Reader Coil L1 Physical Specifications
1)
Typical value at 125kHz
