Product details


Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 7 Total supply voltage (Max) (+5V=5, +/-5V=10) 24 Output current (Typ) (mA) 2500 GBW (Typ) (MHz) 3.82 Slew rate (Typ) (V/us) 75 Iq per channel (Typ) (mA) 51 Features Adj Current Limit, Shutdown Rating Catalog Operating temperature range (C) -40 to 125 CMRR (Typ) (dB) 92 Architecture FET open-in-new Find other Power op amps

Package | Pins | Size

VQFN (RGW) 20 25 mm² 5 x 5 open-in-new Find other Power op amps


  • 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:
    TA = –40°C to +125°C

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The OPA521 is a line-driver power amplifier that aligns with the power-line communications (PLC) conducted emissions requirements in CENELEC bands A, B, C, and D and ARIB STD-T84 and FCC Part 15. This device supplies up to 2.5 A on high-current, low-impedance lines with reactive loads. With optimized internal protection structure, the OPA521 uses minimal external protection 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 monolithic integrated 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 load current (IOUT = 2.5 A, maximum), a wide output swing gives a 10-VPP capability with a nominal 24-V supply.

The device has protection against overtemperature and short-circuit conditions. Fault detection flags show current and thermal limits. A shutdown pin is available, which places the device 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. The device operates over the extended industrial junction temperature range of –40°C to +125°C.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 2
Type Title Date
* Datasheet OPA521 2.5-A Narrowband Line Driver datasheet (Rev. A) Jun. 27, 2018
User guides OPA521EVM User's Guide Mar. 19, 2018

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

The OPA521EVM is a platform for evaluating the OPA521 line driver. The EVM circuit is in an AC coupled inverting amplifier configuration and is powered from a single power supply. Access is provided to the Enable/Shutdown pin and Quiescent Current Consumption pin as well as LED's provide visual (...)

  • Easily configured in an inverting Operational Amplifier circuits
  • 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, FCC (typical)
  • Integrated Power-Line Driver With Thermal and Overcurrent Protection with (...)

Design tools & simulation

SBOMAM6A.TSC (100 KB) - TINA-TI Reference Design
SBOMAM7B.ZIP (14 KB) - PSpice Model
SBOMAM8A.ZIP (9 KB) - TINA-TI Spice Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide
Analog engineer's calculator
ANALOG-ENGINEER-CALC — The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)

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