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32 W hi-fi audio power amplifier

The TDA 2050 is a monolithic integrated circuit in a Pentawatt package, intended for use as an audio class-AB audio amplifier.

Thanks to its high power capability the TDA2050 is able to provide up to 35 W true RMS power into a 4 ohm load at THD = 0%, VS = ±18 V, f = 1 kHz and up to 32 W into an 8 ohm load at THD = 10%, VS = ±22 V, f = 1 kHz.

Moreover, the TDA2050 delivers typically 50 W music power into a 4 ohm load over 1 sec at VS = 22.5 V, f = 1 kHz.

The high power and very low harmonic and crossover distortion (THD = 0.05% typ, at VS = ±22 V, PO= 0.1 to 15 W, RL= 8 ohm, f = 100 Hz to 15 kHz) make the device most suitable for both hi-fi and high-end TV sets.

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Errata Sheet
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Key Features

  • High output power (50 W music power IEC 268.3 rules)
  • High operating supply voltage (50 V)
  • Single or split supply operations
  • Very low distortion
  • Short-circuit protection (OUT to GND)
  • Thermal shutdown

Circuit Diagram

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS0117: 32 W hi-fi audio power amplifier
3.0 2,385 KB

Application Notes

Description Version Size
AN4176: 4 x 10 W class-AB amplifier demonstration board based on the STA540SAN
1.0 1,416 KB

Related Tools and Software

Related Tools and Software

Part Number Description
STSW-AUDIO001 SW Demos-Audio Power Amplifiers, Class AB <5V-TS4956

Sample & Buy

Part Number Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
TDA2050VNRNDPW 5Tube_-1Distributor reported inventory date: 2014-04-15
Distributor NameRegionStockMin. order

(*) 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
(**) The Material Declaration forms available on 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.
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