CMM1530 Celeritek, CMM1530 Datasheet

CMM1530

Manufacturer Part Number

CMM1530

Description

PCS RF ic Mmic Power Amps, 1.85-1.91 GHZ

Manufacturer

Celeritek

Datasheet

1.CMM1530.pdf (4 pages)

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Advanced Product Information

August 1999

Features

Applications

Description

power amplifier module intended for use in PCS handsets and

wireless local loop subscriber units. The amplifier meets the

requirements of PCS-1900 or IS-98 (CDMA) systems. It is a

member of Celeritek’s new True Triangle ™ family of 3V

power amplifier modules.

Absolute Maximum Ratings

* Max (+V d ) and (-V g ) under linear operation. Max potential difference across the device at 1dB gain compression point (2V d + |-V g |) not to exceed the minimum breakdown voltage (V br ) of +12V.

Recommended Operating Conditions

Application Information

positive and negative supply voltages for proper operation. It

is essential when turning on the device that the negative sup-

ply be applied before the positive supply. When turning the

device off, the positive supply should be removed before the

negative supply is removed.

ply voltages and bias points. It is important that the maximum

power dissipation of the package be observed at all times and

that the maximum voltage across the device is not exceeded.

Circuit Design Considerations

Biasing A negative gate voltage is necessary to set the bias

currents of the three FET stages in the CPM1530-PM. This is

3236 Scott Boulevard

Parameter

Drain Voltage (+V d )

Drain Current (I d )

RF Input Power

DC Gate Voltage (-V g )

Parameter

Drain Voltage (+V d )

Gate Voltage (V gg ) (Fixed and regulated)

35% Linear Power Added Efficiency

Operation as Low as 3.2V

+28 dBm Output Power (IS-98 CDMA Mode)

30 dB Gain at Operating Output Power

Tested Under Digital Modulation

New 50 Ohm Power Module Package

PHEMT Material Technology

Fixed Gate Bias

PCS Handsets

PCS Base Stations

Wireless Local Loop Subscriber Units

cdmaOne Handsets

The CPM1530-PM is a three stage amplifier that requires

The CPM1530-PM can be operated over a range of sup-

The CPM1530-PM is a 50 ohm, matched, linear

Rating

+5.5 V*

1.8 A

3 dBm*

-3.0 V*

Santa Clara, California 95054

Parameter

Power Dissipation

Thermal Resistance

Storage Temperature

Typ

3.2 to 4.1

-2.5

(1 of 4)

Units

Volts

Rating

5 W

20°C/W

-65°C to +150°C

50 Ohm Linear Power Module

efficient, matched module that provides excellent electrical

stability and low thermal resistance. The part requires no

external matching and a fixed negative voltage significantly

reducing space and cost and enhancing ease of use.

and load impedances.

accomplished via a fixed -2.5 V to pin 6. The positive supply

voltages are applied to pins 2 and 3. Bypass decoupling is pro-

vided on-board.

in-line inductance are shown in the evaluation board on Page 4.

DC supply lines can compromise the adjacent channel power

ratio (ACPR), reduce power gain and/or create oscillations.

Supply Ramping To obtain power ramping, gate supply con-

trol is recommended.

Mode Switching If further efficiency is required at lower

power levels, then an adjustment of the fixed Vgg can be made.

Parameter

Operating Temperature (PC Board)

V dd2/3 3

RF IN 1

The recommended DC by-pass capacitance and low-pass

Inadequate by-pass capacitance and inductance around the

V dd1 2

Phone: (408) 986-5060

The CPM1530-PM is packaged in a low-cost, space

This device is unconditionally stable under all source

Functional Block Diagram

GND

Parameter

Operating Temperature

Channel Temperature

Soldering Temperature

3.2V, 28 dBm, PCS

– Continued on Page 2 –

1.85 to 1.91 GHz

GND

CPM1530-PM

GND

6 V gg

5 GND

4 RF OUT

Backside is Ground

Typ

-30 to +80

Fax: (408) 986-5095

Rating

-40°C to +90°C

150°C

260°C for 5 Sec.

Units

°C

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