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MWS11-PHXX-CS

W-CMDA Power Amplifier

Microsemi Corporation 

A MICROSEMI COMPANY

MWS11-PHxx-CS

W-CMDA Power Amplifier

PRELIMINARY

   

Supply Voltage (VBAT) ............................................................................................. 8.0VDC

Supply Voltage (POUT<31 dBm)............................................................................... 5.0VDC

Mode Voltage (VMODE)............................................................................................. 3.0VDC

Control Voltage (VPD) .............................................................................................. 3.0VDC

Input RF Power .......................................................................................................... 6dBm

Operating Case Temperature....................................................................... -30°C to 100°C

Storage Temperature .................................................................................... 30°C to 150°C

Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to

Ground. Currents are positive into, negative out of specified terminal.

  

  
     


 





RF IN

RF input. An external series capacitor is required as a DC block. The input match can be improved to < 2:1 by

using a series capacitor and shunt inductor.

VCC1

Power supply for first stage and interstage match. VCC should be fed through an inductor terminated with a

capacitor on the supply side.

VCC2

Power supply for Second stage and interstage match. VCC should be fed through an inductor terminated with a

capacitor on the supply side.

VCC

Supply for bias reference circuits.

VB1

First stage control voltage. The VB1 pin can be connected with the other stage control voltages into a single

reference voltage through an external resistor bridge.

VB2

Second stage control voltage. The VB2 pin can be connected with the other stage control voltages into a single

reference voltage through an external resistor bridge.

RF OUT

RF Output and Power supply for final stage. This is the unmatched collector output of the third stage. A DC

Block is required following the matching components. The biasing may be provided via a parallel L-C set for

resonance at the operating frequency of 1920MHz to 1980 MHz. It is important to select an inductor with very

low DC resistance with a 1A current rating. Alternatively, shunt microstrip techniques are also applicable and

provide very low DC resistance. Low frequency bypassing is required for stability. There are three pins

designated as RF OUT.

GND

This is a circuit level ground, isolated from the backside ground contact.

GND1

Ground for First Stage. This ground should be isolated from the backside ground contact.

GND2

Ground for Second Stage. This ground should be isolated from the backside ground contact.

PKGGND

Ground connection. The backside of the package should be soldered to a top side ground pad which is

connected to the ground plane with multiple vias. The pad should have a short thermal path to the ground plane.

Copyright © 2000

Rev. 0.2b,2000-11-07

Microsemi

Micro WaveSys

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

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