1710-1950 MHz Variable Gain Amplifier

Skyworks SKY65175 is a high linearity, Variable Gain Amplifier (VGA) module. The device includes an input Low-Noise Amplifier (LNA), a variable voltage attenuator, and an output Power Amplifier (PA). The two amplifiers and voltage attenuator are optimized for superior ACLR performance with WCDMA signals.

The high linearity (high OP1dB, OIP3, and ACLR) and high efficiency of this device make it ideal for use at the final stage (or close to the final stage) of a WCDMA transmit chain. The output of the first PA (PA1) is matched to the input of the VCA.

The output of the VCA is matched to the input of the second PA (PA2). The RF_IN and RF_OUT signals (pins 1 and 8, respectively) are both internally matched, including DC blocking capacitors.

The SKY65175 VGA uses low-cost Surface Mount Technology (SMT) in the form of a compact, 8 x 8 mm 12-pin Multi-Chip Module (MCM), which allows for a highly manufacturable low-cost solution.


  • Frequency range: 1710 to 1950 MHz
  • High gain: 26 dB
  • Attenuation range: 18 dB
  • OP1dB: +29 dBm
  • ACLR: –70 dBc for POUT = +12 dBm
  • Single DC supply: +5 V
  • Small MCM (12-pin, 8 x 8 mm) SMT package (MSL3, 260 °C per JEDEC J-STD-020)
Data Sheets SKY65175: 1710-1950 MHz Variable Gain Amplifier 201559B.pdf (606 KB)
ProductName : SKY65175
Operating Frequency (MHz) : 1710-1950
Architecture : Single Channel
Attenuation Type : Analog
Gain Control Range (dB) : 18
Gain Step Size (dB) : N/A
Gain (dB) : 26
Min. NF : 2.8
IP3 (dBm) : OIP3 = +41.5
P1 dB (dBm) : OP1dB = +29
Supply Voltage (V) : 5
Package : MCM, 12-pin
Package (mm) : 8 x 8 x 1.35
Product Information:
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