FX589 Datasheet, PDF (8/18 Pages) CML Microcircuits – Low-Voltage/High-Speed GMSK Modem

Application Information ......
Bit Error Rate Performance
10^-1
10^-2
10^-3
10^-4
FX589 BT = 0.3
10^-5
BT = 1.0 (Theoretical)
FX589 BT = 0.5
10^-6
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20
S/N (dB) [Noise Bandwidth = Bit Rate]
Fig.6 Typical Bit-Error-Rate Performance
Rx Signal Quality
Figure 7 shows, diagrammatically, the effect of input Rx signal quality on the “Rx S/N” output.
100 _{% High Time}
90
80
70
60
50
40
30
20
10
0
4
5
6
7
8
9
Fig.7 Typical Rx S/N Output ‘High-Time’ (%) vs Input S/N
8
BT = 0.5
BT = 0.3
10
11
12
13
S/N (dB)