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

Page 1 of 3 March 2005

ECM168

PHS +34 dBm 10V Module

Product Information

The Communications Edge

TM

Product Features

Applications

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’s

stringent ACLR requirements.

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

32.2

33.5

34.8

Pout = +34 dBm, Vd = 10V

-67

-64

Pout = +34 dBm, Vd = 10V, See note 2

ACLR (±600kHz)

Padj1

dBc

-69

Pout = +33.5dBm, Vd = 10V

ACLR (±900kHz)

Padj2

dBc

-74

-70

Pout = +34 dBm, Vd = 10V

Input VSWR

1.5

Pout = +34 dBm, Vd = 10V

2

2fo

dBc

-50

Pout = +34 dBm, Vd = 10V

3

3fo

dBc

-50

Pout = +34 dBm, Vd = 10V

Supply Voltage

Vcc1, Vcc2

V

+10

Operating Current

Icc

mA

1000

1100

1300

Pout = +34 dBm, Vd = 10V

1. Test conditions unless otherwise noted: 25 ºC, Supply Voltage = +10 V, Output Power = +34 dBm, RF signal modulation is per PHS RCR-28.

2. The actual test limits performed by WJ correspond to an internal maximum ACLR specification of -65 dBc at +34 dBm output power.

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