
Specifications and information are subject to change without notice
WJ Communications, Inc
Phone 1-800-WJ1-4401
FAX: 408-577-6621
e-mail: sales@wj.com
Web site: www.wj.com
December 2004
ECM168
PHS +34 dBm 10V Module
Product Information
The Communications Edge
TM
Product Features
1.9 GHz Power Amp Module
+34 dBm Linear Output Power
33 dB Gain
Single +10V Supply
No negative voltage required
Low cost metal package
MTTF > 100 Years
Applications
PAS Base Stations
Repeaters
Product Description
The ECM168 is a high performance PAS Amplifier
Module offering excellent linearity. The internally
matched multi-stage amplifier has 33.5 dB gain while
achieving +34 dBm linear output power to meet PHS
requirements of better than -65 dBc ACLR at a ±600 kHz
offset from the carrier.
The ECM168 uses a high reliability InGaP/GaAs HBT
process technology and does not require any external
matching components. The module has an added benefit
by not require any negative biasing voltages; an internal
active bias allows the ECM168 to maintain high linearity
over temperature and operate directly off a single +10V
supply. A low-cost metal housing allows the device to
have a low thermal resistance and achieves over 100
years MTTF. All devices are 100% RF and DC tested.
The ECM168 is targeted for use as a driver amplifier in
wireless infrastructure where high linearity and high
power is required. This combination makes the device an
excellent candidate for next generation PAS base
stations.
Functional Diagram
Top View
Pin No.
1
2
3
4
5
6
Case
Function
RF Output
Vcc2
No Connect
Vcc1
No Connect
RF Input
Ground
Specifications
(1)
Parameter
Frequency
Power Gain
Symbol
f
Ga
Units
MHz
dB
Min
Typ
Max Test Conditions
1880 - 1920
33.5
35.5
Pout = +34 dBm, Vd = 10V
-67
-69
Pout = +33.5 dBm, Vd = 10V
-74
-70
Pout = +34 dBm, Vd = 10V
1.5
Pout = +34 dBm, Vd = 10V
-50
Pout = +34 dBm, Vd = 10V
-50
Pout = +34 dBm, Vd = 10V
+10
1100
1300
32.5
ACLR (±600kHz)
Padj1
dBc
-65
Pout = +34 dBm, Vd = 10V
ACLR (±900kHz)
Input VSWR
2
nd
Order Harmonic Distortion
3
rd
Order Harmonic Distortion
Supply Voltage
Supply Current
Padj2
2fo
3fo
Vcc1, Vcc2
Id
dBc
dBc
dBc
V
mA
1000
1. Test conditions unless otherwise noted: 25o C, Supply Voltage = +10 V, Output Power = +34 dBm, RF signal modulation is per PHS RCR-28.
Absolute Maximum Rating
Ordering Information
Parameter
Operating Case Temperature
Storage Temperature
Input RF Power
Supply Voltage
Rating
-35 to +55
°
C
-55 to +150
°
C
+10 dBm
+12 V
Part No.
ECM168
ECM168-PCB
Description
PHS +34 dBm 10V Module
Fully Assembled Evaluation Board
Operation of this device above any of these parameters may cause permanent damage.
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