TDA8050 查看數據表（PDF） - Philips Electronics

零件编号

产品描述 (功能)

比赛名单

TDA8050

QPSK transmitter

Philips Electronics 

Philips Semiconductors

QPSK transmitter

Product specification

TDA8050

Table 2 Modulator reference divider ratio

MP1

1

1

0

MP0

1

0

1

PROGRAMMED RATIO

4

8

16

Table 3 Converter synthesizer charge pump current

CR2

0

0

0

0

0

0

1

CR1

0

0

0

0

1

1

0

CR0

0

0

1

1

0

1

0

LOCK_CONV(1)

0

1

0

1

−

−

−

Note

1. LOCK_CONV is an internal signal.

When at logic 0 converter PLL is out-of-lock. When at logic 1 converter PLL is in-lock.

Icp (mA)

1.2

0.36

0.36

0.1

0.1

0.36

1.2

Table 4 Converter synthesizer: fcomp = fosc/RD

fosc\fcomp

1 MHz

4 MHz

12.5 kHz

80

320

25 kHz

40

160

50 kHz

20

80

125 kHz

8

32

Table 5 Converter synthesizer; ND = 4; flo = ND × NDR × fcomp = NDR × step

flo\step

145 MHz

180 MHz

50 kHz

2 900

3 600

100 kHz

1 450

1 800

200 kHz

725

900

500 kHz

290

360

1999 Dec 14

14

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