ACFM-7325 Datasheet, PDF (4/19 Pages) AVAGO TECHNOLOGIES LIMITED – Band Class 10 Cellular Band Quadplexer

Absolute Maximum Ratings ^[1]
Parameter
Storage temperature
Maximum RF Input Power to Tx Ports
Unit
Value
°C
-65 to +125
dBm
+33
Maximum Recommended Operating Conditions ^[2]
Parameter
Unit
Value
Operating temperature, Tc ^[3] , Tx Power ≤ 29 dBm °C
-40 to +100
Operating temperature, Tc ^[3] , Tx Power ≤ 30 dBm °C
-40 to +85
Notes:
1. Operation in excess of any one of these conditions may result in permanent damage to the
device.
2. The device will function over the recommended range without degradation in reliability or
permanent change in performance, but is not guaranteed to meet electrical specifications.
3. T_C is defined as Case Temperature, the temperature of the bottom mounting surface of the
quadplexer where it makes contact with the circuit board.
ACFM-7325
Applications Information
The ACFM-7325 quadplexer has a single antenna con-
nection common to the both the Cellular and PCS Band
duplexers.
Operation
A two-element series-L, shunt-C network is used to match
the impedance of the Ant port to 50 ohms as shown in
Figure 1.
System Ant
5.1 nH
1.0 pF
Ant Port 1
Matching Components
The nominal values for L and C shown here were selected
to match the ACFM-7325 to 50 ohms. Since every appli-
cation is different, these nominal values may need to be
adjusted to provide the best impedance match for the
user’s particular circuit board, performance requirements,
and interface to related components.
The L and C matching components should be located in
close proximity to the quadplexer as shown in the recom-
mended PCB layout.
The maximum tolerance for the matching components
should be ±5% for the inductor and ±0.2 pF for the
capacitor. The inductor should be of the high Q type (e.g.,
Murata LQW15AN5N1D00D).
Port 5
Cell Rx
Port 3
PCS Rx
Figure1. Typical Application.
Port 4
Cell Tx
Port 2
PCS Tx
4