3236 Scott Boulevard

Santa Clara, California 95054

Phone: (408) 986-5060

Fax: (408) 986-5095

Parameter

Condition

Min

Typ

Max

Units

Frequency Range

1.85

1.91

GHz

Gain

@ Digital power output

22

24

dB

Power Output

Meets J-STD-018 CDMA mask

28.0

28.5

dBm

Harmonics

2nd @ Digital power output

-35

-30

dBc

3rd @ Digital power output

-40

-35

dBc

Noise Figure

4.5

5.0

dB

Return Loss

10

dB

Efficiency

Pout CDMA

27

30

%

Positive Supply Current (Id)

Pout CDMA

500

mA

Quiescent Current (Iq)

No RF

250

mA

Negative Supply Current (-Ig)

0.5

1.0

mA

Negative Supply Voltage (-Vg)

-1.3

-1.7

-2.2

V

CMM1321

Features

t 30% Linear Power Added Efficiency

t 28.5 dBm Output Power

(ANSI J-STD-018 CDMA)

t 24 dB Gain

t Tested Under Digital Modulation

t Low Cost SO-8 Surface Mount Package

Applications

t PCS Handsets

t PCS Base Stations

t Wireless Local Loop Subscriber Units

t 1.6 GHz Satellite Subscriber Units

Description

The CMM1321 is a 5 V linear power amplifier

intended for use in PCS handsets, wireless local loop sub-

scriber units and PCS base stations. The CMM1321 offers

maximum performance and flexibility. The amplifier is

designed to support the requirements of PCS CDMA (ANSI

J-STD-018) systems.

The CMM1321 is packaged in a low-cost, space effi-

cient SO-8 power package that gives excellent electrical stabili-

ty and thermal handling performance with a RΘ of less than

18° C/W. The part is designed to require minimal external cir-

cuitry for bias and matching, simplifying design and keeping

board space and cost to a minimum. Through matching adjust-

ment, equivalent performance can also be achieved for the 1.93

to 1.99 GHz PCS bands as well as the 1.6 GHz satellite bands.

1.85 to 1.91 GHz

5V, 28.5 dBm, PCS

Power Amplifier

Preliminary Product Information

November 1996

(1 of 5)

Back plane is ground and

must be soldered to thermally

conductive ground plane.

Vg2 4

RF IN 1

Vg1 3

GND 2

6 RF OUT/Vd2

5 RF OUT/Vd2

8 N/C

7 Vd1

Functional Block Diagram

Electrical Characteristics

Unless otherwise specified, the following specifications are guaranteed at room temperature with drain voltage (+Vd) = 4.8 V in Celeritek test fixture.

Absolute Maximum Ratings

Parameter

Rating

Parameter

Rating

Parameter

Rating

Drain Voltage (+Vd)

+9.0 V*

Power Dissipation

5 W

Operating Temperature

-40°C to +100°C

Drain Current (Id)

1.8 A

Thermal Resistance

18°C/W

Channel Temperature

175°C

RF Input Power

+15 dBm*

Storage Temperature

-65°C to +150°C

Soldering Temperature

260°C for 5 Sec.

DC Gate Voltage (-Vg)

-4.0 V*

Recommended Operating Conditions

Parameter

Typ

Units

Parameter

Typ

Units

Drain Voltage (+Vd)

4.5 to 5.1

Volts

Operating Temperature (PC Board)

-30 to +80

°C

* Max (+Vd) and (-Vg) under linear operation. Max potential difference across the device in RF compression (2Vd + |-Vg|) not to exceed the minimum breakdown voltage (Vbr) of +18V.