TRF6901

SINGLECHIP RF TRANSCEIVER

SLWS110G − SEPTEMBER 2001 − REVISED JUNE 2004

27

POST OFFICE BOX 655303

APPLICATION INFORMATION

Reference

Generator

DC-DC

Converter

LNA

RSSI

24

23

22

21

20

19

18

17

16

15

14

13

36

35

34

33

32

31

30

29

28

27

26

25

1

2

3

4

5

6

7

8

9

10

11

12

Data

slicer

LPF_OUT

CER_DIS

SLC_CAP

RX_DATA

TX_DATA

XTAL_SW

XTAL

CLKTST_OUT

DC_DC_IN

PA_OUT

PA_VCC

VCO_VCC

VCO_TANK2

VCO_TANK1

U1

TRF6901

PLL

VCO

C12

2.7 pF

C16

2.7 pF

L2

10 nH

C13

22 pF

C15

RX_IN+

LNA_VCC

VCO_VCC

L6

8.2 nH

C21

1.8 pF

PA_VCC

TX_OUT

J2

J4

J1

C23

150 pF

C27

100 pF

C26

0.1

µ F

VCO_VCC2

DCDC_OUT

C36

100 pF

R14

18 k

Ω

C44

1000 pF

R19

6.8 k

Ω

C49

10000 pF

C35

0.22

µ F

DCDC_OUT

VCO_VCC2

C45

0.1

µ F

C46

10000 pF

2

1

3

DCDC_OUT

XTAL1

C22

68 pF

C24

15 pF

DCDC_VCC

STDBY

MCU_CLK

XTAL_VCC

TX_DATA

RX_DATA

C20

2200 pF DIS1

10.7

C14

15 pF

R5

220 k

Ω

L3

4.7

µ H

C5

15 pF

C4

82 pF

C6

82 pF

BPF1

SFECV10.7 MA 2S−A or SFECF10M7EA00

BW = 330 kHz

1

2

3

C7

120 pF

C9

68 pF

1

2

3

L1

4.7

µ H

C31

0.1 F

µ

JP1

JP3

R13

100

Ω

L7

47

µ H

C37

0.47 F

µ

C38

1 F

µ

C39

0.47 F

µ

CDACV10M7GA001

SMI

97SMX(C)− 20 MHZ

CDSCA10M7GA119,

or

CDSCB10M7GA119,

Figure 11. Typical Application Schematic for the 902-MHz to 928-MHz North American 32-kbps NRZ,

±50-kHz Deviation FSK Application