
M
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
R3
51
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
L
F
C
AMPS LO
PCS1900 LO
F
P
CELLULAR
DUPLEXER
3.3pF
6800pF
C17
2.7pF
C15
6800pF
C11
1.5pF
C8
4.7pF
C10
1000pF
C13
0.01
μ
F
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
Typical Application Circuits (continued)