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BiCMOS 5-Bit Digital Variable Gain Amp. SMT, 50 - 800 MHz

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Part Details
  • TTL/CMOS compatible serial, parallel or latched parallel control interface
  • High Output IP3: +35 dBm
    (At all gain settings)
  • Wide Gain Control Range: 23 dB
  • Power-up State Selection
  • 24 Lead 4x4 mm SMT Package: 16 mm²
  • Excellent State & Step Accuracy (±0.05 dB)
Additional Details
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The HMC628LP4(E) is a digitally controlled variable gain amplifier which operates from 50 to 800 MHz, and can be programmed to provide anywhere from 8 dB attenuation, to 15 dB of gain, in 1 dB steps. The HMC628LP4(E) delivers noise figure of 5 dB in its maximum gain state, with output IP3 of up to +35 dBm in any state. The dual mode control interface is CMOS/ TTL compatible, and accepts either a three wire serial input or a 5 bit parallel word.

The HMC628LP4(E) also features a user selectable power up state and a serial output port for cascading other Hittite serial controlled components. The HMC628LP4(E) is housed in a RoHS compliant 4x4 mm QFN leadless package, and is available in three evaluation board configurations, depending on the application frequency.


  • Cellular / 3G Infrastructure
  • WiBro / WiMAX / 4G
  • Microwave Radio & VSAT
  • Test Equipment and Sensors
  • IF & RF Applications


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