Typical application circuits (continued) – Rainbow Electronics MAX2327 User Manual
Page 21
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
______________________________________________________________________________________
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
12
11
R6
7.5k
R4
2k
R1
20k
BUFFERED
LO OUTPUTS
V
CC
C5
100pF
C6
22pF
C7
100pF
C12
3.9pF
C14
1.5pF
C15
6800pF
C18
1pF
C2
100pF
C3
100pF
C4
100pF
1.65nH
1pF
PCS DUPLEXER
DIPLEXER
LOGIC INPUTS
FROM
CELLULAR PA
CELLULAR LO
FROM
PCS PA
CELLULAR
DUPLEXER
3.3pF
6800pF
C19
2.7pF
C17
6800pF
C11
3.9pF
C8
2.2pF
C10
1000pF
C13
0.01
µF
C9
1000pF
L3
270nH
L4
120nH
L5
120nH
LOGIC
INPUT
FM
TO VGA
184MHz
184MHz
869MHz–894MHz
1930MHz–1990MHz
TO VGA
V
CC
V
CC
R2
51
Ω
R2
51
Ω
9
10
MAX2321
LNAINH
RLNA
LNAOUTL
LNAOUTH
GAIN
LIN
BAND
LNAINL
LOHIN
LOLIN
MIXINH
L6
5.6nH
L1
1.8nH
L2
6.8nH
3.85nH
MIXINL
RBIAS
CDMA+
CDMA-
BUFFEN
V
CC
FMOUT
LOLOUT
LOHOUT
x2
MAX2321
(DUAL BAND, DUAL VCO INPUTS, LO DOUBLER, DUAL IF OUTPUTS, AND LO BUFFER)
NOTE: THE MAX2321 IS RECOMMENDED FOR
TRIPLE-MODE PHONES.
KEY FEATURE: LO DOUBLER FOR SINGLE VCO
OPERATION.
R5
20k
4.7nH
6800pF
4.7nH
C1
100pF
V
CC
R11
30
Ω
Typical Application Circuits (continued)