125-W stereo, 250-W mono, 12- to 34-V supply, PWM input class-D audio amplifier


Product details


Audio input type PWM Architecture Class-D Speaker channels (Max) 4 Power stage supply (Max) (V) 32.5 Power stage supply (Min) (V) 12 Load (Min) (ohms) 4 Output power (W) 125 SNR (dB) 105 THD + N @ 1 kHz (%) 0.05 Iq (Typ) (mA) 22.3 Control interface Hardware Analog supply (Min) (V) 10.8 Analog supply (Max) (V) 13.2 Power to parallel bridge tied load (Max) (W) 250 PSRR (dB) 80 Operating temperature range (C) 0 to 125 open-in-new Find other Speaker amps

Package | Pins | Size

HTSSOP (DDV) 44 113 mm² 14 x 8.1 open-in-new Find other Speaker amps


  • PurePath™ HD Integrated Feedback Provides:
    • 0.05% THD at 1 W Into 4 Ω
    • > 65-dB PSRR (No Input Signal)
    • > 105-dB (A Weighted) SNR
  • Preclipping Output for Control of a Class-G Power
  • Reduced Heat Sink Size Due to Use of 60-mΩ
    Output MOSFET With > 90% Efficiency at Full
    Output Power
  • Output Power at 10% THD+N
    • 125-W and 4-Ω BTL Stereo Configuration
    • 250-W and 2-Ω in PBTL Mono Configuration
  • Output Power at 1% THD+N
    • 105-W and 4-Ω BTL Stereo Configuration
    • 55-W and 8-Ω BTL Stereo Configuration
  • Click- and Pop-Free Start-up
  • Error Reporting Self-Protected Design With UVP,
    Overtemperature, and Short-Circuit Protection
  • EMI Compliant When Used With Recommended
    System Design
  • 44-Pin HTSSOP (DDV) Package for Reduced
    Board Size
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The TAS5612LA is a feature optimized class-D power amplifier based on the TAS5612A.

The TAS5612LA uses large MOSFETs for improved power efficiency and a novel gate drive scheme for reduced losses in idle and at low output signals leading to reduced heat sink size.

The unique preclipping output signal can be used to control a class-G power supply. This combined with the low idle loss and high power efficiency of the TAS5612LA leads to industry-leading levels of efficiency ensuring a super "green" system.

The TAS5612LA uses constant voltage gain. The internally matched gain resistors ensure a high Power Supply Rejection Ratio giving an output voltage only dependent on the audio input voltage and free from any power supply artifacts.

The high integration of the TAS5612LA makes the amplifier easy to use; and, using TI’s reference schematics and PCB layouts leads to fast design in time. The TAS5612LA is available in the space-saving, surface-mount, 44-pin HTSSOP package.

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Next Generation High Performance, High Resolution Class-D Amplifier (Analog-In) available

True Ultra-HD sound quality with a low THD+N <0.005% and a bandwidth of up to 100kHz.

For output levels up to 115W Stereo / 230W Mono: TPA3245

For output levels up to 175W Stereo / 350W Mono: TPA3251

Technical documentation

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Type Title Date
* Datasheet TAS5612LA 125-W Stereo and 250-W Mono PurePath™ HD Digital-Input Class-D Power Stage datasheet (Rev. A) Mar. 31, 2015
Application notes Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug. 26, 2019
Application notes AN-1849 An Audio Amplifier Power Supply Design (Rev. C) Jun. 27, 2019
User guides TAS5612L-TAS5614LDDEVM (Rev. C) Dec. 09, 2015
Application notes AN-1737 Managing EMI in Class D Audio Applications (Rev. A) May 01, 2013

Design & development

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

Hardware development

SLOC265.ZIP (2022 KB)

Design tools & simulation

SLAM160.ZIP (25 KB) - IBIS Model
SLOC304.ZIP (681 KB)

CAD/CAE symbols

Package Pins Download
HTSSOP (DDV) 44 View options

Ordering & quality

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