OPA521 - 2.5A Narrowband Line Driver

The OPA521 is a line-driver power amplifier that aligns with the power-linecommunications (PLC) conducted emissions requirements in CENELEC bands A, B, C, and D and ARIBSTD-T84 and FCC Part 15. This device supplies up to 2.5 A on high-current, low-impedance lines withreactive loads. With optimized internal protection structure, the OPA521 uses minimal externalprotection components that enable cost- and space-effective systems.

The OPA521 gives a closed-loop gain of –7 V/V with 3.8-MHz of bandwidth. The monolithicintegrated circuit gives high reliability in power-line communication applications.

The OPA521 line driver operates with a single supply from 7 V to 24 V. At a typical loadcurrent (I_OUT = 2.5 A, maximum), a wide outputswing gives a 10-V_PP capability with a nominal 24-V supply.

The device has protection against overtemperature and short-circuit conditions. Faultdetection flags show current and thermal limits. A shutdown pin is available, which places thedevice into a low-power state that consumes 58 µA (typical).

The OPA521 is available in a surface-mount, 5-mm × 5-mm, 20-pin VQFN (RGW) package. Thedevice operates over the extended industrial junction temperature range of –40°C to+125°C.

• Supports:
  • CENELEC Bands A, B, C, D
  • ARIB STD-T84, FCC
  • FSK, SFSK, and NB-OFDM
• Conforms To:
  • EN50065-1, -2, -3, -7
  • FCC, Part 15
  • ARIB STD-T84
• Standards:
  • G3, PRIME, P1901.2, ITU-G.hnem
• Line Driver With Integrated Thermal and Overcurrent Protection
• Pin-Selectable Quiescent Current Consumption:
  • 58 µA in Standby Mode (Typical)
  • 51 mA for CENELEC Bands A, B, C, D (Typical)
  • 78 mA for FCC, ARIB STD-T84 (Typical)
• Package: 5-mm × 5-mm 20-Pin VQFN
• Operating Junction Temperature Range:
  T_A = –40°C to +125°C

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