CC1010-RTY1 datasheet(105/152 Pages) TI

105 / 152 page

CC1010

SWRS047

Page 105 of 152

17.11 Receiver sensitivity versus data rate and frequency separation

The receiver sensitivity depends on the

data rate, the data format, FSK frequency

separation and the RF frequency. Typical

figures for the receiver sensitivity (BER =

-3) are shown in Table 33 for 64 kHz

frequency separations and in Table 34 for

kHz.

Optimised

sensitivity

configurations

are

used.

For

best

performance the frequency separation

should be as high as possible especially at

high data rates.

Figure 31 and Figure 32 show typical

figures for how sensitivity varies as a

function of the frequency offset between

the

transmitter

and

the

receiver.

433 MHz

868 MHz

Data rate

[kBaud]

Separation

[kHz]

NRZ

mode

Manchester

mode

NRZ

mode

Manchester

mode

0.6

-109

-108

-106

1.2

-107

-106

-104

2.4

-105

-101

-103

4.8

-104

-103

-98

-100

9.6

-102

-101

-96

-98

19.2

-100

-99

-96

38.4

-97

-98

-94

76.8

-96

-93

Table 33. Typical receiver sensitivity as a function of data rate at 433 and 868 MHz, BER =

10-3, frequency separation 64 kHz

433 MHz

868 MHz

Data rate

[kBaud]

Separation

[kHz]

NRZ

mode

Manchester

mode

NRZ

mode

Manchester

mode

0.6

-105

-100

-102

1.2

-104

-103

-99

-101

2.4

-101

-97

-99

4.8

-98

-100

-96

-98

9.6

-98

-99

-94

-96

19.2

-97

-98

-94

38.4

N/R

76.8

N/R

Table 34. Typical receiver sensitivity as a function of data rate at 433 and 868 MHz, BER =

10-3, frequency separation 20 kHz

N/R = Not recommended (data rate too high compared to frequency separation)

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