DOCSIS®4.0 Downstream Amplifier

The DMA2329 is a high-linearity RF amplifier IC designed for exceptionally wide bandwidth (BW), flat gain over BW, and artifact-fee amplification of multi-carrier modulated signals. Employing an amplifier die manufactured on an advanced GaAs process, this linear CATV amplifier is a single-ended, ultra-linear amplifier ideal for high data rate broadband systems. Designed for use as an easily cascadable 75 Ω gain block, its gain flatness of ±1dB from 750 MHz to 1794 MHz combined with an OIP2 at 1000 MHz of >+55 dBm, make this part ideal for downstream Extended Spectrum DOCSIS® applications. No baluns are required and the part is available in a no exposed leads, small outline, low profile SMT package.

Key Features
  • Provides push-pull amplifier performance as a 75 Ohm Single-Ended I/O amplifier IC (no baluns required)
  • Extended Spectrum DOCSIS® Downstream PHY Compliance from 750 to 1794 MHz
  • Typical Gain = 18.0 dB ±1.0 dB (750 to 1794 MHz)
  • OIP3 >+35 dBm (1000 MHz); OIP2 >+55 dBm (1000 MHz)
  • ≥45 dB MER (DOCSIS® 3.1 OFDM), 750 to 1794 MHz, FLAT, uncorrected
  • RF Output to +30 dBmV (750 to 1794 MHz); Total Composite Power ≈ +47 dBmV
  • Single Power Supply Input (+8.5 Vdc)
  • Operating Current = 250 mA Typical (Pdiss ≈ 2.1 Wdc)
  • Advanced GaAs Amplifier Technology
  • QFN-16 3 x 3 x 0.80 mm SMT Package
  • DOCSIS® 4.0 HFC/FTTx/RFoG Network Downstream 750 to 1794 MHz
  • DOCSIS® Set-Top-Gateway (DSG), Home/SOHO Wireless Gateway Router
  • Extended Spectrum DOCSIS® Downstream from 750 to 1794 MHz

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