High Gain, High Linearity Active Bias Low Noise Amplifier
Avago Technologies’ MGA-14516 is a two stage, easy-to-
use GaAs MMIC Low Noise Amplifier (LNA) with active
bias. The LNA has low noise with good input return loss
and high linearity achieved through the use of Avago
Technologies’ proprietary 0.5um and 0.25um GaAs En-
hancement-mode pHEMT process. Both LNAs have an
extra feature inside that allows a designer to adjust supply
current. The first stage has an additional feature where the
gain can be adjusted externally without affecting noise
figure. Minimum matching needed for input, output and
the inter-stage between the two LNA.
It is designed for optimum use between 1.4GHz to 2.7GHz.
For optimum performance at lower frequency from
400MHz to 1.5GHz, the MGA-13516 is recommended.
Both MGA-13516 & MGA-14516 share the same package
Pin Configuration and Package Marking
4.0 x 4.0 x 0.85 mm3 16-lead QFN
Pin 1Pin 11
Pin 2Pin 10
Pin 3Pin 9
• Low noise figure
• High gain
• Good IRL
• High linearity performance
• High reverse isolation
• Externally adjustable supply current
• Externally adjustable gain
• GaAs E-pHEMT Technology 
• Low cost QFN package
• Excellent uniformity in product specifications
1.95GHz ; Q1 : 5V, 45mA (typ) Q2 : 5V, 110mA
• 31.7 dB Gain
• 0.68 dB Noise Figure
• 13 dB IRL
• 38 dBm Output IP3
• 23.5 dBm Output Power at 1dB gain compression
• Low noise amplifier for cellular infrastructure including
GSM, CDMA, W-CDMA, TD-SCDMA and WiMAX.
• Other very low noise applications.
1. Enhancement mode technology employs positive Vgs, thereby
eliminating the need of negative gate voltage associated with
conventional depletion mode devices.
Pin Description Pin Description
 3 RFin
Attention: Observe precautions for
handling electrostatic sensitive devices.
 4 RFgnd1
12 N[9o]t Used
  5 Vbias1 13 Vg
ESD Machine Model = 40 V
ESD Human Body Model = 200 V
Refer to Avago Application Note
A004R: Electrostatic Discharge,
Damage and Control.
Package marking provides orientation and identification “14516” is the
Product Identification, “YYWW” is the Date Code, “XXXX” is the last 4
digits of the lot number.