Overview
Sample & Buy
Solutions
Documentation
CAD Resources
Tools & Software
Quality & Reliability
eDesignSuite
Get Started
Partner products
Sales Briefcase
  • 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

Download Download

Recommended for you

CAD/EDA Symbols, Footprints and Models

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
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
STA540 Available at 6 distributors

Distributor availability ofSTA540

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 961 1 Order Now
COMPEL EUROPE 475 1 Order Now
RS COMPONENTS EUROPE 557 1 Order Now
ARROW EUROPE 400 0 Order Now
ARROW AMERICA 148 500 Order Now
MOUSER WORLDWIDE 712 1 Order Now

Distributor reported inventory date: 2020-09-30

Distributor Name

DIGIKEY

Stock

961

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

475

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

557

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

400

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

148

Min.Order

500

Region

AMERICA Order Now

MOUSER

Stock

712

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-30

Sample & Buy Buy now
Active
EAR99 NEC Tube MW 15L - - MOROCCO 2.13 / 1k

STA540

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

2.13 / 1k

Distributor availability ofSTA540

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 961 1 Order Now
COMPEL EUROPE 475 1 Order Now
RS COMPONENTS EUROPE 557 1 Order Now
ARROW EUROPE 400 0 Order Now
ARROW AMERICA 148 500 Order Now
MOUSER WORLDWIDE 712 1 Order Now

Distributor reported inventory date: 2020-09-30

Distributor Name

DIGIKEY

Stock

961

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

475

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

557

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

400

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

148

Min.Order

500

Region

AMERICA Order Now

MOUSER

Stock

712

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-30

ECCN (EU)

NEC

Packing Type

Tube

Package

MW 15L

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

2.13 / 1k

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