TH71221

27 to 930MHz

FSK/FM/ASK Transceiver

39010 071221

Page 3 of 44

Data Sheet

Rev. 005

June/07

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

Reliability Information..............................................................................................42

12

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

13

Disclaimer .................................................................................................................44