Rainbow Electronics MAX2108 - Manual (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
0.1
µ F
25 Ω (75 Ω SOURCE) R2
75 Ω
R1
75 Ω
47pF
LO DRIVE
(-5dBm, 50
Ω SOURCE)
50 Ω
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