SL1925KG データシートの表示（PDF） - Mitel Networks

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SL1925KG

Satellite Zero IF QPSK Tuner IC

Mitel Networks 

SL1925

Preliminary Information

100Ω

1kΩ

15pF

Figure 3 Baseband output load condition

1kΩ

1T379 6.15MM STRIPLINE 6 Tanks

1T379

6.15MM STRIPLINE

7

Tanksb

"vcos"

Vcnt

BB811

9MM STRIPLINE

9

Tankv

1kΩ

BB811 9MM STRIPLINE 10 Tankvb

Note: Stripline width =0.44mm,dimensions are approximate.

Figure 4 Local oscillator application circuit

"vcov"

+j1

+j0.5

+j2

+j0.2

+j5

0

0.2

0.5

–j0.2

1

2

1X

X2

X X3

4

5

X

–j5

Marker Freq (MHz)

1

950

2

1350

3

1750

4

2150

Zreal Ω Zimag Ω

90

-18

76

-15

63

-35

46

-29

–j0.5

START 700 MHz

Normalised to 50Ω

–j2

–j1

STOP 2 500 MHz

Figure 5 Converter RF input impedance (typical)

4

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