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Transistor Application Selection Guide
Low Noise Amplifier
 
1st stage LNA
 
    RF to 900 MHz RF to 2.5 GHz RF to 6 GHz RF to 18 GHz
  ATF-36xxx   0.25 dB NF 0.3 dB NF 0.5 dB NF
  ATF-35xxx 0.3 dB NF 0.4 dB NF 0.6 dB NF  
  ATF-38xxx 0.4 dB NF 0.4 dB NF 0.7 dB NF  
  ATF-34xxx 0.4 dB NF 0.5 dB NF 0.7 dB NF  
  ATF-33xxx 0.4 dB NF 0.5 dB NF 0.8 dB NF  
  ATF-13xxx     0.7 dB NF 1.1 dB NF
  ATF-10xxx 0.5 dB NF 0.5 dB NF 0.6 dB NF  
  ATF-21xxx 0.6 dB NF 0.7 dB NF 0.9 dB NF  
           
  HBFP-0450 0.9 dB NF 1.4 dB NF    
  HBFP-0420 1.0 dB NF 1.3 dB NF 2.0 dB NF  
  HBFP-0405 1.1 dB NF 1.4 dB NF 2.1 dB NF  
  AT-320xx 1.0 dB NF 1.5 dB NF    
  AT-310xx 1.0 dB NF 1.5 dB NF    
  AT-305xx 1.0 dB NF 1.5 dB NF    
  AT-415xx 1.0 dB NF 1.5 dB NF    
  AT-414xx 1.0 dB NF 1.5 dB NF    
 
Alternatives:
 
1. Amplifier Integrated Circuits
           
  markets Cellular & Cordless
900 MHz ISM
 LAN/modem
 RF Tag & reader
Mobile Radio (SMR)
CATV
pagers / messaging
GPS (1.5 GHz)
PCN (1.8 GHz)
USPCS (1.9 GHz)
MMDS (2 GHz)
2.4 GHz ISM
 LAN/modem
 RF Tag & reader
TVRO (4 GHz)
WLL (4 GHz)
5.8 GHz ISM
 LAN/modem
 RF Tag & reader
DBS/DSS (12 GHz)
VSAT (12 GHz)

amp Function: in a receiver, amplifies detected signal with minimal added noise
  (sets receiver sensitivity)

Operation:

Bias for noise input matched to Gammaopt output matched to S22'*
Key Parameters NF: 0.25 to 3 dB  
and ranges: Ga: 8 to 20 dB  
  Ic: 1 to 25 mA  
  I IP3: -20 to +10 dBm  


2nd or 3rd stage LNA
 
  RF to 900 MHz RF to 2.5 GHz RF to 6 GHz RF to 18 GHz
ATF-36xxx     17 dB Ga 12 dB Ga
ATF-13xxx   18 dB Ga 15 dB Ga 9 dB Ga
ATF-35xxx 20 dB Ga 18 dB Ga 13 dB Ga  
ATF-34xxx 21 dB Ga 18 dB Ga 12 dB Ga  
ATF-10xxx 20 dB Ga 16 dB Ga 12 dB Ga  
ATF-38xxx 20 dB Ga 17 dB Ga 10 dB Ga  
ATF-33xxx 21 dB Ga 15 dB Ga 9 dB Ga  
ATF-21xxx 15 dB Ga 13 dB Ga 9 dB Ga  
         
HBFP-0405 25 dB Ga 17 dB Ga 10 dB Ga  
HBFP-0420 23 dB Ga 15 dB Ga 8 dB Ga  
HBFP-0450 18 dB Ga 10 dB Ga    
AT-415xx 15 dB Ga 11 dB Ga 6 dB Ga  
AT-420xx 15 dB Ga 11 dB Ga    
AT-320xx 14 dB Ga 11 dB Ga    
AT-310xx 13 dB Ga 10 dB Ga    
AT-305xx 11 dB Ga 8 dB Ga    
 
Alternatives:
 
1. Amplifier Integrated Circuits
         
markets Cellular & Cordless
900 MHz ISM
  LAN/modem
  RF Tag & reader
Mobile Radio (SMR)
CATV
pagers / messaging
GPS (1.5 GHz)
PCN (1.8 GHz)
USPCS (1.9 GHz)
MMDS (2 GHz)
2.4 GHz ISM
  LAN/modem
  RF Tag & reader
TVRO (4 GHz)
WLL (4 GHz)
5.8 GHz ISM
  LAN/modem
  RF Tag & reader
DBS/ DSS (12 GHz)
VSAT (12 GHz)

amp Function: increases signal level; minimizes mixer cascade NF contribution
 
Operation: Bias for noise or gain input matched to Gammaopt output matched to S22'*
Key Parameters Ga: 6 to 20 dB  
and ranges: Ic: 1 to 40 mA  
  NF: 1 to 5 dB  
  I IP3: -20 to +20 dBm  

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this page last updated: 20 October 1999