CC1020-RTR1 datasheet(30/95 Pages) TI1

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CC1020

SWRS046H – NOVEMBER 2006 – REVISED MARCH 2015

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5.9.4

Receiver Sensitivity Versus Data Rate and Frequency Separation

The receiver sensitivity depends on the channel filter bandwidth, data rate, data format, FSK frequency

separation and the RF frequency. Typical figures for the receiver sensitivity (BER = 10–3) are shown in

Table 5-6 and Table 5-7 for FSK. For best performance, the frequency deviation should be at least half

the baud rate in FSK mode.

The sensitivity is measured using the matching network shown in the application circuit in Figure 6-1,

which includes an external T/R switch.

Refer to AN029 CC1020/1021 Automatic Frequency Control (AFC) (SWRA063) for plots of sensitivity

versus frequency offset.

Table 5-6. Typical Receiver Sensitivity as a Function of Data Rate at 433 MHz, FSK Modulation,

BER = 10–3, Pseudo-random Data (PN9 Sequence)

SENSITIVITY [dBm]

CHANNEL

DATA RATE

DEVIATION

SPACING

FILTER BW

MANCHESTER

[kBaud]

[kHz]

NRZ MODE

UART MODE

[kHz]

MODE

2.4 optimized

12.5

±2.025

9.6

–115

–118

–115

sensitivity(1)

2.4 optimized

12.5

±2.025

12.288

–112

–114

–112

selectivity(1)

4.8

±2.475

19.2

–112

9.6

±4.95

25.6

–110

–111

–110

19.2

100

±9.9

51.2

–107

–108

–107

38.4

150

±19.8

102.4

–104

76.8

200

±36.0

153.6

–101

153.6

500

±72.0

307.2

–96

–97

–96

(1)

Optimized selectivity is relevant for systems targeting compliance with ARIB STD-T67, 12.5 kHz channel spacing.

Table 5-7. Typical Receiver Sensitivity as a Function of Data Rate at 868 MHz, FSK Modulation,

BER = 10–3, Pseudo-random Data (PN9 Sequence)

SENSITIVITY [dBm]

CHANNEL

DATA RATE

SPACING

DEVIATION [kHz]

FILTER BW

MANCHESTER

[kBaud]

NRZ MODE

UART MODE

[kHz]

MODE

2.4

12.5

±2.025

12.288

–112

–116

–112

4.8

±2.475

19.2

–111

–112

–111

9.6

±4.95

25.6

–109

–110

–109

19.2

100

±9.9

51.2

–107

38.4

150

±19.8

102.4

–103

76.8

200

±36.0

153.6

–99

–100

–99

153.6

500

±72.0

307.2

–94

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