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  • 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

    • Description Version Size Action
      DS5467
      4 x 13 W dual/quad power amplifier
      6.0
      338.36 KB
      PDF
      DB30023
      TEST integration DCAM - DMS / Please ignore it
      2.0
      191.15 KB
      PDF
      DS5467

      4 x 13 W dual/quad power amplifier

      DB30023

      TEST integration DCAM - DMS / Please ignore it

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STA540
Active
MW 15L Industrial Ecopack2

STA540

Package:

MW 15L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

MW 15L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) 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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Package
Packing Type
Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
STA540 Available at 6 distributors

Distributor availability ofSTA540

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 253 1 Order Now
COMPEL EUROPE 602 1 Order Now
RS COMPONENTS EUROPE 76 1 Order Now
ARROW EUROPE 58 0 Order Now
ARROW AMERICA 1348 500 Order Now
MOUSER WORLDWIDE 878 1 Order Now

Distributor reported inventory date: 2020-07-07

Distributor Name

DIGIKEY

Stock

253

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

602

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

76

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

58

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

1348

Min.Order

500

Region

AMERICA Order Now

MOUSER

Stock

878

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-07-07

Get sample MW 15L Tube
Active
EAR99 MOROCCO 2.13 / 1k

STA540

Package

MW 15L

Packing Type

Tube

Budgetary Price (US$)*/Qty

2.13 / 1k

Distributor availability ofSTA540

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 253 1 Order Now
COMPEL EUROPE 602 1 Order Now
RS COMPONENTS EUROPE 76 1 Order Now
ARROW EUROPE 58 0 Order Now
ARROW AMERICA 1348 500 Order Now
MOUSER WORLDWIDE 878 1 Order Now

Distributor reported inventory date: 2020-07-07

Distributor Name

DIGIKEY

Stock

253

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

602

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

76

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

58

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

1348

Min.Order

500

Region

AMERICA Order Now

MOUSER

Stock

878

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-07-07

Marketing Status

Active

Budgetary Price (US$)* / Qty

2.13 / 1k

ECCN (US)

EAR99

Country of Origin

MOROCCO

(*) 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