Typical application circuits (continued) – Rainbow Electronics MAX2327 User Manual
Page 25
MAX2320/21/22/24/26/27
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
______________________________________________________________________________________
25
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
12
11
R2
51
Ω
R3
51
Ω
R6
7.5k
R4
2k
BUFFERED
LO OUTPUTS
V
CC
C5
100pF
C6
22pF
C7
100pF
C12
1.5pF
C14
6800pF
C16
1pF
C2
100pF
C3
100pF
C4
100pF
6800pF
1pF
PCS SWITCH
DIPLEXER
LOGIC INPUTS
FROM
CELLULAR PA
AMPS LO
PCS1900 LO
FROM
PCS PA
CELLULAR
DUPLEXER
3.3pF
6800pF
C17
2.7pF
C15
6800pF
C11
1.5pF
C8
4.7pF
C10
1000pF
C13
0.01
µF
C9
1000pF
L3
560nH
L4
56nH
L5
56nH
LOGIC
INPUT
FM
TO VGA
PCS1900
400MHz
83MHz
TO VGA
R5
20k
V
CC
V
CC
9
10
MAX2327
LNAINH
N.C.
LNAOUTL
LNAOUTH
MODE
SHDN
BAND
LNAINL
LOHIN
LOLIN
MIXINH
L6
5.6nH
L1
1.8nH
L2
6.8nH
3.85nH
MIXINL
RBIAS
IFOUT+
IFOUT-
BUFFEN
V
CC
FMOUT
LOLOUT
LOHOUT
MAX2327
(DUAL BAND, DUAL VCO INPUTS, AND SEPARATELY CONTROLLED VCO BUFFERS)
NOTE: THE MAX2327 IS RECOMMENDED FOR
DUAL-BAND, TRIPLE-MODE PHONES WITH TDMA
IN THE DIGITAL MODES, e.g., PCS1900 + AMPS.
KEY FEATURES: TWO LO INPUT/OUTPUT PORTS FOR
SEPARATE VCOs, SEPARATELY CONTROLLED VCO BUFFERS.
1930MHz–1990MHz
869MHz–894MHz
1.5pF
1.65nH
4.7nH
C1
100pF
V
CC
R11
30
Ω
Typical Application Circuits (continued)