TH71221

27 to 930MHz

FSK/FM/ASK Transceiver

39010 071221

Page 3 of 44

Data Sheet

Rev. 009

Nov/15

5.1.1

Default Register Settings for FS0, FS1...................................................................................... 21

5.1.2

A – word ..................................................................................................................................... 22

5.1.3

B – word ..................................................................................................................................... 23

5.1.4

C – word..................................................................................................................................... 24

5.1.5

D – word..................................................................................................................................... 25

6

Technical Data..........................................................................................................26

6.1 Absolute Maximum Ratings.............................................................................................. 26

6.2 Normal Operating Conditions ........................................................................................... 26

6.3 DC Characteristics ........................................................................................................... 27

6.4 PLL Synthesizer Timings.................................................................................................. 29

6.5 AC Characteristics of the Receiver Part ........................................................................... 29

6.6 AC Characteristics of the Transmitter Part ....................................................................... 30

6.7 Serial Control Interface .................................................................................................... 30

6.8 Crystal Parameters .......................................................................................................... 30

7

Application Circuit Examples..................................................................................31

7.1 FSK Application Circuit Programmable User Mode (internal AFC option)......................... 31

7.2 FSK Application Circuit Stand-alone User Mode .............................................................. 32

7.3 FSK Test Circuit Component List (Fig. 14 and Fig. 15)..................................................... 33

7.4 ASK Application Circuit Programmable User Mode (normal data slicer option) ................ 34

7.5 ASK Test Circuit Component List (Fig. 16) ....................................................................... 35

7.6 ASK Application Circuit Programmable User Mode (peak detector option)....................... 36

7.7 ASK Test Circuit Component List (Fig. 17) ....................................................................... 37

8

Extended Frequency Range ....................................................................................38

8.1 Board Component List (Fig. 18) ....................................................................................... 38

9

TX/RX Combining Network......................................................................................39

9.1 Board Component List (Fig. 19) ....................................................................................... 39

9.2 Typical LNA S-Parameters in Receive Mode.................................................................... 39

9.3 LNA Input Impedances in Transmit Mode ........................................................................ 40

10 Package Description ................................................................................................41

10.1

Soldering Information.................................................................................................... 41

11 Manufacturability Information.................................................................................42

12 ESD Precautions ......................................................................................................42

13 Disclaimer .................................................................................................................44