Product details

Audio input type Analog Input, Digital Input Architecture Class-D Boosted, Smart Amp Speaker channels (Max) Mono Power stage supply (Max) (V) 8.5 Power stage supply (Min) (V) 2.7 Load (Min) (ohms) 6 Output power (W) 4 SNR (dB) 94 THD + N @ 1 kHz (%) 0.1 Iq (Typ) (mA) 6.54 Control interface I2C Closed/open loop Closed Analog supply (Min) (V) 2.7 Analog supply (Max) (V) 5.5 Sampling rate (Max) (kHz) 192 PSRR (dB) 75 Operating temperature range (C) -40 to 85
Audio input type Analog Input, Digital Input Architecture Class-D Boosted, Smart Amp Speaker channels (Max) Mono Power stage supply (Max) (V) 8.5 Power stage supply (Min) (V) 2.7 Load (Min) (ohms) 6 Output power (W) 4 SNR (dB) 94 THD + N @ 1 kHz (%) 0.1 Iq (Typ) (mA) 6.54 Control interface I2C Closed/open loop Closed Analog supply (Min) (V) 2.7 Analog supply (Max) (V) 5.5 Sampling rate (Max) (kHz) 192 PSRR (dB) 75 Operating temperature range (C) -40 to 85
DSBGA (YFF) 30 6 mm² 2.895 x 2.615
  • Analog or Digital Input Mono Boosted Class-D
    Amplifier
  • 4.0 W into 8 Ω Load from 4.2 V Supply (1%
    THD+N)
  • Efficiency of 85% at Rated Power
  • I2S, Left-Justified, Right-Justified, DSP, PDM, and
    TDM Input and Output Interface
  • Input Sample Rates from 8 kHz to 192 kHz
  • High Efficiency Class-G Boost Converter
    • Automatically Adjusts Class-D Supply
  • Built-In Speaker Sense
    • Measures Speaker Current and Voltage
    • Measures VBAT and VBOOST Voltages
  • Built-In Automatic Gain Control (AGC)
    • Limits Battery Current Consumption
  • Adjustable Class-D Switching Edge-Rate Control
  • Power Supplies
    • Boost Input: 3.0 V to 5.5 V
    • Analog: 1.65 V to 1.95 V
    • Digital I/O: 1.5 V to 3.6 V
  • Thermal and Short-Circuit Protection
  • I2C Interface for Register Control
  • Stereo Configuration Using Two TAS2552s
    • I2C Address Select Terminal (ADDR)
  • 2.855 mm × 2.575 mm, 0.4 mm Pitch 30-Ball
    WCSP
  • Analog or Digital Input Mono Boosted Class-D
    Amplifier
  • 4.0 W into 8 Ω Load from 4.2 V Supply (1%
    THD+N)
  • Efficiency of 85% at Rated Power
  • I2S, Left-Justified, Right-Justified, DSP, PDM, and
    TDM Input and Output Interface
  • Input Sample Rates from 8 kHz to 192 kHz
  • High Efficiency Class-G Boost Converter
    • Automatically Adjusts Class-D Supply
  • Built-In Speaker Sense
    • Measures Speaker Current and Voltage
    • Measures VBAT and VBOOST Voltages
  • Built-In Automatic Gain Control (AGC)
    • Limits Battery Current Consumption
  • Adjustable Class-D Switching Edge-Rate Control
  • Power Supplies
    • Boost Input: 3.0 V to 5.5 V
    • Analog: 1.65 V to 1.95 V
    • Digital I/O: 1.5 V to 3.6 V
  • Thermal and Short-Circuit Protection
  • I2C Interface for Register Control
  • Stereo Configuration Using Two TAS2552s
    • I2C Address Select Terminal (ADDR)
  • 2.855 mm × 2.575 mm, 0.4 mm Pitch 30-Ball
    WCSP

The TAS2552 is a high efficiency Class-D audio power amplifier with advanced battery current management and an integrated Class-G boost converter. The device constantly measures the current and voltage across the load and provides a digital stream of this information.

The Class-G boost converter generates the Class-D amplifier supply rail. During low Class-D output power, the boost improves efficiency by deactivating and connecting VBAT directly to the Class-D amplifier supply. When high power audio is required, the boost quickly activates to provide significantly louder audio than a stand-alone amplifier connected directly to the battery.

The AGC automatically adjusts Class-D gain to reduce battery current at end-of-charge voltages, preventing output clipping, distortion and early system shutdown. The fixed gain is adjustable via I2C. The gain range is –7 dB to +24 dB in 1 dB steps.

In addition to a differential mono analog input, the TAS2552 has built-in a 16-bit D/A converter used with a digital input. Moving the D/A converter from the digital host processor into the integrated amplifier process provides better dynamic performance at lower system cost. Additionally, since the PCB routing is digital rather than analog, sensitivity to external perturbations such as GSM frame-rate noise is decreased at the system level.

The TAS2552 is a high efficiency Class-D audio power amplifier with advanced battery current management and an integrated Class-G boost converter. The device constantly measures the current and voltage across the load and provides a digital stream of this information.

The Class-G boost converter generates the Class-D amplifier supply rail. During low Class-D output power, the boost improves efficiency by deactivating and connecting VBAT directly to the Class-D amplifier supply. When high power audio is required, the boost quickly activates to provide significantly louder audio than a stand-alone amplifier connected directly to the battery.

The AGC automatically adjusts Class-D gain to reduce battery current at end-of-charge voltages, preventing output clipping, distortion and early system shutdown. The fixed gain is adjustable via I2C. The gain range is –7 dB to +24 dB in 1 dB steps.

In addition to a differential mono analog input, the TAS2552 has built-in a 16-bit D/A converter used with a digital input. Moving the D/A converter from the digital host processor into the integrated amplifier process provides better dynamic performance at lower system cost. Additionally, since the PCB routing is digital rather than analog, sensitivity to external perturbations such as GSM frame-rate noise is decreased at the system level.

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Technical documentation

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Type Title Date
* Data sheet TAS2552 4.0-W Class-D Mono Audio Amplifier with Class-G Boost and Speaker Sense datasheet (Rev. B) PDF | HTML 30 Apr 2015
Technical article How smart amps are bringing high-fidelity audio into the smart home 03 May 2021
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) 26 Aug 2019
Application note AN-1849 An Audio Amplifier Power Supply Design (Rev. C) 27 Jun 2019
Application note PLL and Clocking Configuration for Audio Devices PDF | HTML 26 Mar 2019
EVM User's guide TAS2552 EVM User's Guide (Rev. A) 31 Jul 2015
Application note Inductor Selection for the TAS2552 Boosted Class-D Amplifier (Rev. A) 14 May 2014
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) 01 May 2013

Design & development

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

Evaluation board

TAS2552EVM — TAS2552 4W Class D Audio Power Amplifier Evaluation Module

The TAS2552EVM is a USB audio amplifier with an IV feedback, Boosted Class-D mono amplifier. Together with the TAS2552 control software and a customer supplied speaker and power supply, it allows easy evaluation of the TAS2552 audio amplifier. The TAS2552 control software is compatible with Windows (...)

Not available on TI.com
Application software & framework

PUREPATHCONSOLE — PurePath™ Console graphical development suite for audio system design and development

PurePath™ Console is a highly integrated and easy-to-use audio development suite designed specifically to simplify the evaluation, configuration and debug process associated with the development of audio products. Watch how easy it is to use the PurePath™ Console 3 software.
PurePath Console’s (...)
Driver or library

TAS2552SW-LINUX — Linux Driver for TAS2552

The Linux driver supports the TAS2552 4.0-W Class-D Mono Audio Amplifier with Class-G Boost and Speaker Sense. The Linux driver supports communication through the I2C bus and interfaces with the Linux DAPM (Dynamic Audio Power Management for Portable Devices) class.
Linux Mainline Status

Available in (...)

GUI for evaluation module (EVM)

TAS2552 EVM GUI

SLAC655.ZIP (2619 KB)
Simulation model

TAS2552 IBIS Model

SLAM199.ZIP (69 KB) - IBIS Model
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 (...)
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DSBGA (YFF) 30 View options

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