MLX71122_16 Datasheet, PDF (20/59 Pages) Melexis Microelectronic Systems – 300 to 930MHz FSK/FM/ASK Receiver

MLX71122
300 to 930MHz FSK/FM/ASK Receiver
Datasheet
f _IF1

f _RF  N _LO2f_IF2
N _LO2  1
f _IF1

f _RF

8M Hz
5
(13)
Finally N and A can be calculated with equation (6).
3.1.4. Counter Setting Examples for SPI Mode
To provide some examples, the following table shows some counter settings for the reception of the well-
known ISM and SRD frequency bands. The channel spacing is assumed to be f_CH = 100kHz. In below table all
frequency units are in MHz.
Inj
f_RF
f_IF1
f_LO1 N_tot N
P
A
f_PFD R
f_REF f_LO2 f_IF2
h-h 300 97.3 397.3 2980 93 32 4
0.133 75 10 99.3 2
h-h 315 102.3 417.3 3130 97 32 26 0.133 75 10 104.3 2
h-h 434 142 576 4320 135 32 0
0.133 75 10 144 2
h-h 470 154 624 4680 146 32 8
0.133 75 10 156 2
l-l
850 171.6 678.4 8480 256 32 0
0.08 125 10 169.6 2
l-l
868 175.2 692.8 8660 270 32 20 0.08 125 10 173.2 2
l-l
915 184.6 730.4 9130 285 32 10 0.08 125 10 182.6 2
l-l
930 187.6 742.4 9280 290 32 0
0.08 125 10 185.6 2
3.1.5. Counter Settings in ABC Mode – 8+1 Preconfigured Channels
In ABC mode (SPISEL=0), the counter settings are hard-wired. In below table all frequency units are in MHz.
CH Inj f_RF f_IF1 f_LO1 N_tot N
P
A
f_PFD R
f_REF f_LO2 f_IF2
1
h-l 369.5 125.8 495.3 3715 116 32 3
0.133 75 10 123.8 2
2
h-l 371.1 126.4 497.5 3731 116 32 19 0.133 75 10 124.4 2
3
h-l 375.3 127.8 503.1 3773 117 32 29 0.133 75 10 125.8 2
4
h-l 376.9 128.3 505.2 3789 118 32 13 0.133 75 10 126.3 2
5
h-l 384.0 130.7 514.7 3860 120 32 20 0.133 75 10 128.7 2
6
h-l 388.3 132.1 520.4 3903 121 32 31 0.133 75 10 130.1 2
7
h-l 391.5 133.2 524.7 3935 122 32 31 0.133 75 10 131.2 2
8
h-l 394.3 134.1 528.4 3963 123 32 27 0.133 75 10 132.1 2
9
h-l 395.9 134.6 530.5 3979 124 32 11 0.133 75 10 132.6 2
REVISION 014 – AUGUST, 2016
390 10 71122 01
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