Microsemi

Micro WaveSys

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

Page 2

Copyright

© 2000

Rev. 0.2,2000-12-08

MWS11-PH22-CS

CMDA Power Amplifier

A

M I CROSEM I

COM P A N Y

  

   



  

  

 


 
    

      

  





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

capacitor on the supply side.

VCC2

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 bias 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.

PKG GND

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.

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

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

Storage Temperature ................................................................................... -65°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.