Typical application circuit – Rainbow Electronics MAX19997A User Manual
Page 33
MAX19997A
Dual, SiGe High-Linearity, 1800MHz to 2900MHz
Downconversion Mixer with LO Buffer
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33
Typical Application Circuit
RF MAIN INPUT
RF DIV INPUT
C1
C8
C9
C13
C17
C18
R1
V
CC
L2*
L1*
R3
C20
C19
IF MAIN OUTPUT
T1
R2
C14
LO
4:1
4:1
V
CC
V
CC
V
CC
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
28
29
30
31
32
33
34
35
36
19
20
21
22
23
24
25
26
27
GND
V
CC
GND
GND
GND
GND
GND
GND
RFMAIN
RFDIV
EXPOSED
PAD
IFD_SET
GND
GND
LO_ADJ_D
GND
V
CC
V
CC
GND
LO_ADJ_M
V
CC
GND
GND
IFM_SET
IFD+
IFD-
V
CC
IFM+
IFM-
LO
*USE 390nH (0805) INDUCTORS FOR AN IF FREQUENCY OF 200MHz.
CONTACT FACTORY FOR DETAILS.
**CONNECT INDUCTORS TO IMPROVE RF MATCH FROM 1800MHz TO
2400MHz. SEE TABLE 2 FOR DETAILS.
GND
GND
GND
GND
GND
V
CC
MAX19997A
C4
V
CC
C21
C15
V
CC
R5
R4
V
CC
L3*
L4*
R6
C10
C11
T2
IF DIV OUTPUT
C12
+
L7**
L8**
GND