4 x 13 W dual/quad power amplifier

The STA540 is a 4-channel, class-AB audio amplifier designed for high quality sound applications.

The amplifiers have single-ended outputs with integrated short-circuit protection, thermal protection and diagnostic functions.

The chip is housed in the 15-pin Multiwatt ECOPACK®Pb-free package which is RoHS (2002/95/EC) compliant.

Key Features

  • High output power capability
    • 2x 38 W into 4 Ω at 18 V, 1 kHz, 10% THD
    • 2x 34 W into 8 Ω at 22 V, 1 kHz, 10% THD
    • 2x 24W into 4Ω at 14.4 V, 1 kHz, 10% THD
    • 2x 15 W into 8 Ω at 16 V, 1 kHz, 10% THD
    • 4x 13 W into 2 Ω at 15 V, 1 kHz, 10% THD
    • 4x 11 W into 4 Ω at 18 V, 1 kHz, 10% THD
    • 4x 7 W into 4 Ω at 14.4 V, 1 kHz, 10% THD
  • Minimum external components count:
    • no bootstrap capacitors
    • no Boucherot cells
    • internally fixed gain 20 dB
  • Standby function (CMOS compatible)
  • No audible pop during standby operations
  • Diagnostic facilities:
    • clip detector
    • output to GND short-circuit detector
    • output to VS short-circuit detector
    • soft short-circuit check at turn-on
    • thermal shutdown warning
  • Protection
    • Output AC/DC short circuit
    • Soft short-circuit check at turn-on
    • Thermal cutoff/limiter to prevent chip from overheating
    • High inductive loads
    • ESD

Circuit Diagram

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Technical Documentation

Product Specifications
Description Version Size
DS5467 DS5467: 4 x 13 W dual/quad power amplifier 6.0 338 KB

Tools and Software

Embedded Software
Audio ICs Software

Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STA540 MW 15L Tube - - Active 2.13 1000 NEC EAR99 MOROCCO MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STA540 ActiveMW 15LIndustrialEcopack2 0 0

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.