Rainbow-electronics MAX2108 Manuel d'utilisateur télécharger pdf (Page 10)

MAX2108

Direct-Conversion Tuner IC

10 ______________________________________________________________________________________

24

23

22

21

20

19

18

17

1

2

3

4

5

6

7

8

16

15

14

13

9

10

MODULUS

CONTROL

GAIN

CONTROL

RFIN

11

12

GND

V

CC

IOUT

IOUT

GND

RFIN

RFIN

V

CC

V

CC

PS_SEL

GC

GND

QOUT

QOUT

GND

V

CC

N.C.

LO

LO

N.C.

GND

GND

PSOUT

PSOUT

V

CC

V

CC

V

CC

V

CC

C12

22pF

C13

0.1µF

25Ω

(75Ω SOURCE) R2

75Ω

R1

75Ω

47pF

LO DRIVE

(-5dBm, 50Ω SOURCE)

50Ω

47pF

C4

22pF

C5

22pF

C6

1000pF

C7

1000pF

C3

22pF

C1

10pF

C2

0.1µF

PRESCALER

OUTPUT

MAX2108

BASEBAND

LP

FILTER

BASEBAND

LP

FILTER

Typical Operating Circuit

1 2 ... 5 6 7 8 9 10 11 12

Direct-Conversion Tuner IC 1

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