CC1020-RTR1 datasheet(43/91 Pages) TI

Datenblatt-Suchmaschine für elektronische Bauteile

CC1020-RTR1 Datenblatt(PDF) 43 Page - Texas Instruments

Teilenummer	CC1020-RTR1

Bauteilbeschribung	Single Chip Low Power RF Transceiver for Narrowband Systems

PDF	91 Pages

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43 / 91 page

CC1020

SWRS046

Page 43 of 92

13.

Transmitter

13.1. FSK Modulation Formats

The data modulator can modulate FSK,

which is a two level FSK (Frequency Shift

Keying), or GFSK, which is a Gaussian

filtered FSK with BT = 0.5. The purpose of

the GFSK is to make a more bandwidth

efficient system as shown in Figure 20.

The modulation and the Gaussian filtering

are done internally in the chip. The

TX_SHAPING bit in the DEVIATION

recommended for narrowband operation.

Figure 21 and Figure 22 show typical eye

diagrams for 434 MHz and 868 MHz

operation respectively.

Figure 20. FSK vs. GFSK spectrum plot. 2.4 kBaud, NRZ, ±2.025 kHz frequency deviation

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