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 Ed
g
e TM
Product Features
• 1.9 GHz Power Amp Module
• +34 dBm Li near 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. Function
1 RF Output
2 Vcc2
3 No Connect
4 Vcc1
5 No Connect
6 RF Input
Case Ground
Specifications (1)
Parameter Symbol Units Min Typ Max Test Conditions
Frequency f MHz 1880 - 1920
Power Gain Ga dB 32.5 33.5 35.5 Pout = +34 dBm, Vd = 10V
ACLR (±600kHz) Padj1 dBc -67
-69 -65
Pout = +34 dBm, Vd = 10V
Pout = +33.5 dBm, Vd = 10V
ACLR (±900kHz) Padj2 dBc -74 -70 Pout = +34 dBm, Vd = 10V
Input VSWR 1.5 Pout = +34 dBm, Vd = 10V
2nd Order Harmonic Distortion 2fo dBc -50 Pout = +34 dBm, Vd = 10V
3rd Order Harmonic Distortion 3fo dBc -50 Pout = +34 dBm, Vd = 10V
Supply Voltage Vcc1, Vcc2 V +10
Supply Current Id mA 1000 1100 1300
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 Rating Part No. Description
Operating Case Temperature -35 to +55 °C ECM168 PHS +34 dBm 10V Module
Storage Temperature -55 to +150 °C ECM168-PCB Fully Assembled Evaluation Board
Input RF Power +10 dBm
Supply Voltage +12 V
Operation of this device above any of these parameters may cause permanent damage.
1 2 3 4 5 6
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 Ed
g
e TM
Recommended Application Circuit
Please note that for reliable operation, the evaluation board will have to be mounted to a much larger heat sink during operation and in laboratory
environments to dissipate the power consumed by the device. Th e us e of a convection fan is also recommended in laboratory environments.
Performance Graphs
Gain vs. Channel Power
1900 MHz, PHS Signal, 192 kHz BW
30
31
32
33
34
35
25 27 29 31 33 35
Output Channel Power (dBm)
-35°C 25°C 55°C
ACLR vs. Channel Power
1900 MHz, ±600 kHz offset, PHS Signal, 192 kHz BW
-74
-72
-70
-68
-66
-64
25 27 29 31 33 35
Output Channel Power (dBm)
25°C -35°C 55°C
ACLR vs. Channel Power
1900 MHz, ±900 kHz offset, PHS Signal, 192 kHz BW
-78
-76
-74
-72
-70
-68
25 27 29 31 33 35
Output Channel Power (dBm)
25°C -35°C 55°C
Power Added Efficiency vs. Channel Power
1900 MHz, PHS Signal, 192 kHz BW
0
5
10
15
20
25
30
25 27 29 31 33 35
Output Channel Power (dBm)
-35°C 25°C 55°C
Icc vs. Channel Power
1900 MHz, PHS Signal, 192 kHz BW
900
950
1000
1050
1100
1150
25 27 29 31 33 35
Output Channel Power (dBm)
-35°C 25°C 55°C
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 Ed
g
e TM
Outline Drawing
PIN ASSIGNMENT
(4) Vcc1, (5) N/C, (6) RFin, Case:GND.
(1) RFout, (2) Vcc2, (3) N/C,
TYPICAL DIMENSIONS ARE IN MM.
NOTE: UNLESS OTHERWISE SPECIFIED
// A0.10
A
PCB
Lead 6X
Heat Sink
Cover
123 456
Front View
Top View
Side View
4X R=1.2
