SP8855E Просмотр технического описания (PDF) - Mitel Networks

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Компоненты Описание

производитель

SP8855E

2.8GHz Parallel Load Professional Synthesiser

Mitel Networks 

SP8855E

40k 40k 5k

Vcc

5k

INPUT

50µA

0V

Fig. 7a RF and reference divider programming bits, Fpd/Fref

enable, control direction and phase detector gain control

inputs

C-LOCK DETECT (HIGH WHEN LOCKED)

18

Vcc

3k

3k

50k

V REF

4.7V

20µA

100µA

0V

Fig. 7c Lock detect decouple

R set

19

Vcc

CHARGE PUMP

CURRENT SOURCES

130

Vcc

4k

325

325

RF

INPUT13

500

500

RF

INPUT14

3mA

3k

0V

Fig. 7b RF inputs

Vcc

2k5

2k5

400µA

LOW

WHEN

LOCKED 17

3k

3k

LOCK

DETECT

OUTPUT

100

100

1k 11

0V

Fig. 7d Lock detect output

CHARGE PUMP

OUTPUT

REFERENCE

Vcc

20 21

450

450

UP

83

83

Vcc

DOWN

2mA

Fig. 7e Rset pin

Fig. 7f Charge pump circuit

Fig. 7 Interface circuit diagrams

8

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