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Max2108 direct-conversion tuner ic, Typical operating circuit – Rainbow Electronics MAX2108 User Manual

Page 10

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MAX2108

Direct-Conversion Tuner IC

10

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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
0.1

µ

F

25

(75

SOURCE) R2

75

R1

75

47pF

LO DRIVE
(-5dBm, 50

SOURCE)

50

47pF

C4

22pF

C5

22pF

C6

1000pF

C7

1000pF

C3

22pF

C1

10pF

C2

0.1

µ

F

PRESCALER

OUTPUT

MAX2108

BASEBAND

LP

FILTER

BASEBAND

LP

FILTER

Typical Operating Circuit