BeRex announced the release of four new products; the BVA1761, BVA1762, BVA2761 and BVA2762 are digital variable gain amplifiers (DVGAs) which are designed for glitch-safe attenuation state transitions, highly accurate 7-bit digitally controlled attenuation over a 31.75 dB range, with 0.25 dB steps, while maintaining high linearity. The DVGAs operate at their maximum frequencies of either 6 or 8 GHz. The DVGAs are powered by 5, 4 and 3.3 V supplies, which reduces their overall power consumption, and they are packaged in the space saving 4 x 4 x 0.9 mm, 24-Lead QFN and 5 x 5 x 0.9 mm, 32-Lead QFN.

Designed with outstanding RF characteristics, the DVGAs are primarily intended for 5G/4G/3G wireless infrastructure equipment, satellite radio and other high-end wireless applications. The BVA1761, BVA1762, BVA2761 and BVA2762 offer the flexibility to program their gain-control through serial mode only and 2 to 3 bit addressable function interfaces to minimize control lines that support very fast switching speeds.

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Key features:

  • Power requirement
    • BVA1761 = 5.0 V, 83 mA / 3.3 V, 48 mA
    • BVA1762 = 5.0 V, 110 mA / 4.0 V, 55 mA
    • BVA2761 = 5.0 V, 166 mA / 3.3 V, 96 mA
    • BVA2762 = 5.0 V, 215 mA / 4.0 V, 110 mA
  • Frequency band
    • BVA1761 = 50 MHz to 6000 MHz
    • BVA1762 = 500 MHz to 8000 MHz
    • BVA2761 = 50 MHz to 6000 MHz
    • BVA2762 = 500 MHz to 8000 MHz
  • Gain/Attenuation
    • BVA1761 = 17.0 dB @ 3.5 GHz / 0.25 dB steps up to 31.75 dB
    • BVA1762 = 19.7 dB @ 3.5 GHz / 0.25 dB steps up to 31.75 dB
    • BVA2761 = 34.8 dB @ 3.5 GHz / 0.25 dB steps up to 31.75 dB
    • BVA2762 = 40.5 dB @ 3.5 GHz / 0.25 dB steps up to 31.75 dB
  • High P1dB (Output power at 1 dB compression) / OIP3 (Output third order intercept point)
    • BVA1761 = 20.0 dBm / 37.5 dBm @ 3.5 GHz
    • BVA1762 = 20.7 dBm / 34.9 dBm @ 3.5 GHz
    • BVA2761 = 20.7 dBm / 36.6 dBm @ 3.5 GHz
    • BVA2762 = 21.2 dBm / 35.6 dBm @ 3.5 GHz
  • Gain accuracy
    • BVA1761 = ± (0.25 + 5.0 percent of gain setting) @ 3.5 GHz
    • BVA1762 = ± (0.25 + 5.0 percent of gain setting) @ 3.5 GHz
    • BVA2761 = ± (0.25 + 5.0 percent of gain setting) @ 3.5 GHz
    • BVA2762 = ± (0.25 + 5.0 percent of gain setting) @ 3.5 GHz
  • Programming modes
    • Serial mode only 
    • 2 to 3 bit addressable function to minimize control line
  • Glitch-safe attenuation state transitions
  • Power-UP states Settings
  • Package size 
    • BVA1761/BVA1762= 4 x 4 x 0.9 mm, 24-Lead QFN
    • BVA2761/BVA2762= 5 x 5 x 0.9 mm, 32-Lead QFN.

Pricing and Availability

The BVA1761, BVA1762, BVA2761 and BVA2762 are currently available and are competitively priced. Samples are available upon request.