Home Audio Audio amplifiers Speaker amps
Home
Audio
Audio amplifiers
Speaker amps

LM4940

ACTIVE

6-W, stereo, 10- to 16-V, analog input Class-AB audio amplifier

Order now
Data sheet

LM4940

ACTIVE
Data sheet Order now

Product details

Audio input type Analog Input Architecture Class-AB Speaker channels (max) Stereo Rating Catalog Power stage supply (max) (V) 16 Power stage supply (min) (V) 10 Load (min) (Ω) 4 THD + N at 1 kHz (%) 0.02 Iq (typ) (mA) 8 Control interface Hardware Closed/open loop Open Analog supply (min) (V) 10 Analog supply voltage (max) (V) 16 PSRR (dB) 56 Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-AB Speaker channels (max) Stereo Rating Catalog Power stage supply (max) (V) 16 Power stage supply (min) (V) 10 Load (min) (Ω) 4 THD + N at 1 kHz (%) 0.02 Iq (typ) (mA) 8 Control interface Hardware Closed/open loop Open Analog supply (min) (V) 10 Analog supply voltage (max) (V) 16 PSRR (dB) 56 Operating temperature range (°C) -40 to 85
TO-263 (KTW) 9 145.796 mm² 10.16 x 14.35
  • Click and Pop Circuitry Eliminates Noise During Turn-On and Turn-Off Transitions
  • Low Current, Active-Low Shutdown Mode
  • Low Quiescent Current
  • Stereo 6W Output, RL = 4Ω
  • Short Circuit Protection
  • Unity-Gain Stable
  • External Gain Configuration Capability

Key Specifications

  • Quiscent Power Supply Current: 40mA (max)   (SE)
  • POUT
    VDD = 14.4V, RL = 4Ω, 10% THD+N: 6 W (typ)
  • Shutdown Current: 40µA (typ)

All trademarks are the property of their respective owners.

  • Click and Pop Circuitry Eliminates Noise During Turn-On and Turn-Off Transitions
  • Low Current, Active-Low Shutdown Mode
  • Low Quiescent Current
  • Stereo 6W Output, RL = 4Ω
  • Short Circuit Protection
  • Unity-Gain Stable
  • External Gain Configuration Capability

Key Specifications

  • Quiscent Power Supply Current: 40mA (max)   (SE)
  • POUT
    VDD = 14.4V, RL = 4Ω, 10% THD+N: 6 W (typ)
  • Shutdown Current: 40µA (typ)

All trademarks are the property of their respective owners.

The LM4940 is a dual audio power amplifier primarily designed for demanding applications in flat panel monitors and TVs. It is capable of delivering 6 watts per channel to a 4Ω load with less than 10% THD+N while operating on a 14.4VDC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4940 does not require bootstrap capacitors or snubber circuits. Therefore, it is ideally suited for display applications requiring high power and minimal size.

The LM4940 features a low-power consumption active-low shutdown mode. Additionally, the LM4940 features an internal thermal shutdown protection mechanism along with short circuit protection.

The LM4940 contains advanced pop and click circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions.

The LM4940 is a unity-gain stable and can be configured by external gain-setting resistors.

The LM4940 is a dual audio power amplifier primarily designed for demanding applications in flat panel monitors and TVs. It is capable of delivering 6 watts per channel to a 4Ω load with less than 10% THD+N while operating on a 14.4VDC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4940 does not require bootstrap capacitors or snubber circuits. Therefore, it is ideally suited for display applications requiring high power and minimal size.

The LM4940 features a low-power consumption active-low shutdown mode. Additionally, the LM4940 features an internal thermal shutdown protection mechanism along with short circuit protection.

The LM4940 contains advanced pop and click circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions.

The LM4940 is a unity-gain stable and can be configured by external gain-setting resistors.
open-in-new Find other Speaker amps
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Data sheet LM4940 6W Stereo Audio Power Amplifier datasheet (Rev. C) 01 May 2013

Design & development

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

Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Request
Package Pins Download
TO-263 (KTW) 9 View options
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos