SL6619 데이터 시트보기 (PDF) - Zarlink Semiconductor Inc

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SL6619

Direct Conversion FSK Data Receiver

Zarlink Semiconductor Inc 

SL6619 Data Sheet

SL6619

VCC

VREF15mV

CURRENT

SOURCE 1

−

30

−

100k

+

+

32

31

R13

C34

R17

C18

RDECAY

CTC

VREF

VREF

RF

INPUT

VCC1

Figure 3 - AGC schematic

TO RF AMP

VOLTAGE

REFERENCE

AFC

DETECTION

CIRCUIT

SL6619

18

VCC2

0µA/5µA

19

5µA/0µA

24

CVREF

C15

CINT 1

R15

VCC1

R11 C21

25

C22

C30

CINT 2

320k

TO VCXO

VARACTOR

DIODE

Figure 4 - AFC schematic

Peak deviation

(kHz)

3·5

4

4·5

5

5·5

Baud rate

(bps)

512, 1200, 2400

512, 1200, 2400

512, 1200, 2400

512, 1200, 2400

512, 1200, 2400

Component (Fig. 4)

C22 C21 R11

750pF

560pF

510pF

470pF

430pF

2·0nF

1·5nF

1·3nF

1·2nF

1·1nF

15kΩ

15kΩ

15kΩ

15kΩ

15kΩ

Table 2 - AFC defining components

10

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