Product details

Audio input type Analog Input, Digital Input Architecture Class-D Speaker channels (Max) Mono Power stage supply (Max) (V) 5.5 Power stage supply (Min) (V) 2.7 Load (Min) (ohms) 4 Output power (W) 2.6 SNR (dB) 94 THD + N @ 1 kHz (%) 0.02 Iq (Typ) (mA) 0.002 Control interface I2C, SPI Closed/open loop Closed Analog supply (Min) (V) 1.5 Analog supply (Max) (V) 1.95 Sampling rate (Max) (kHz) 96 PSRR (dB) 47.2 Operating temperature range (C) -40 to 105
Audio input type Analog Input, Digital Input Architecture Class-D Speaker channels (Max) Mono Power stage supply (Max) (V) 5.5 Power stage supply (Min) (V) 2.7 Load (Min) (ohms) 4 Output power (W) 2.6 SNR (dB) 94 THD + N @ 1 kHz (%) 0.02 Iq (Typ) (mA) 0.002 Control interface I2C, SPI Closed/open loop Closed Analog supply (Min) (V) 1.5 Analog supply (Max) (V) 1.95 Sampling rate (Max) (kHz) 96 PSRR (dB) 47.2 Operating temperature range (C) -40 to 105
VQFN (RGE) 24 16 mm² 4 x 4
  • AEC-Q100 Qualified With the Following Results for Automotive Applications:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C4B
  • Mono Class-D BTL Speaker Amplifier
    • 2.6 W at 10% THD_N (4Ω, 5.5 V)
    • 1.7 W at 10% THD+N (8 Ω, 5.5 V)
  • Supports both Digital and Analog Input
  • Single Supply 2.7 V to 5.5 V
  • Load Diagnostic Functions:
    • Output-to-GND Short
    • Terminal-to-Terminal Short
    • Output-to-Power Short
    • Over Temperature
  • Supports 9-kHz to 96-kHz Sample Rates
  • Two Single-Ended Inputs with Output Mixing and Level Control
  • Embedded Power-On-Reset
  • Programmable Digital Audio Processing:
    • Bass Boost
    • Treble
    • EQ (up to 6 Biquads)
  • I2S, Left-Justified, Right-Justified, DSP, and TDM Audio Interfaces
  • I2C and SPI Control With Auto-Increment
  • 24-Pin, VQFN Wettable Flank (Automotive Grade) Package
  • AEC-Q100 Qualified With the Following Results for Automotive Applications:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C4B
  • Mono Class-D BTL Speaker Amplifier
    • 2.6 W at 10% THD_N (4Ω, 5.5 V)
    • 1.7 W at 10% THD+N (8 Ω, 5.5 V)
  • Supports both Digital and Analog Input
  • Single Supply 2.7 V to 5.5 V
  • Load Diagnostic Functions:
    • Output-to-GND Short
    • Terminal-to-Terminal Short
    • Output-to-Power Short
    • Over Temperature
  • Supports 9-kHz to 96-kHz Sample Rates
  • Two Single-Ended Inputs with Output Mixing and Level Control
  • Embedded Power-On-Reset
  • Programmable Digital Audio Processing:
    • Bass Boost
    • Treble
    • EQ (up to 6 Biquads)
  • I2S, Left-Justified, Right-Justified, DSP, and TDM Audio Interfaces
  • I2C and SPI Control With Auto-Increment
  • 24-Pin, VQFN Wettable Flank (Automotive Grade) Package

The TAS2505-Q1 is a mono Class-D speaker amp that supports both Digital and Analog inputs. The device is ideal for automotive instrument cluster, emergency call (eCall), and telematics applications. Direct I2S input removes the need for an external DAC in the audio signal path, and the integrated LDO enables single supply operation. In addition to integration, the device features programmable audio processing. The onboard DSP supports bass boost, treble, and EQ (up to 6 biquads). An on-chip PLL provides the high-speed clock needed by the DSP. The volume level is register controlled.

The TAS2505-Q1 is a mono Class-D speaker amp that supports both Digital and Analog inputs. The device is ideal for automotive instrument cluster, emergency call (eCall), and telematics applications. Direct I2S input removes the need for an external DAC in the audio signal path, and the integrated LDO enables single supply operation. In addition to integration, the device features programmable audio processing. The onboard DSP supports bass boost, treble, and EQ (up to 6 biquads). An on-chip PLL provides the high-speed clock needed by the DSP. The volume level is register controlled.

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Technical documentation

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Type Title Date
* Data sheet TAS2505-Q1 2.6-W Digital/Analog Input Automotive Class-D Speaker Amplifier With Audio Processing datasheet (Rev. B) 11 Oct 2018
Technical article Exploring evolving trends in automotive cluster audio design 17 Feb 2020
Application note Automotive Diagnostics Using TAS2505-Q1 (Rev. B) 23 Aug 2018
User guide TAS25xx Codec Control EVM (Rev. A) 31 Oct 2017
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) 01 May 2013
User guide TAS2505 Application Reference Guide 14 Feb 2013

Design & development

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

Evaluation board

TAS2505-Q1EVM — TAS2505-Q1 Audio Amplifier Evaluation Board with Diagnostics

The TAS2505-Q1EVM Evaluation Module (EVM) is a complete demo and evaluation reference design for the TAS2505-Q1, which is a low-power Class-D digital audio amplifier with analog, digital, and mixed input capabilities. The EVM can be controlled via USB using TI’s Codec Control software, or (...)

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Evaluation board

TAS2505EVM — TAS2505 2W Class-D Audio Amplifier Evaluation Module

The TAS2505 is a low power digital input speaker amp with support for 24-bit digital I2S data mono playback.

In addition to driving a speaker amp up to 4-Ω, the device also features a mono headphone driver and a programmable digital-signal processing block. The digital audio data format is (...)

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Limit: 1
Driver or library

TAS2XXX-DRIVERS — Android and other drivers for the TAS25XX and TAS27XX series of Class-D amplifiers

These Android drivers support TI’s low power digital input Class-D audio amplifier devices. The "Get software" buttons link to git.ti.com repositories for these open-source drivers.
Simulation model

TAS2505 IBIS Model

SLAM181.ZIP (125 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 (...)
Calculation tool

COEFFICIENT-CALC — Coefficient Calculator For Digital Biquad Filters

COEFFICIENT-CALC (TIBQ) calculates the coefficients for the digital filter biquad transfer function implemented in TI audio codecs. The characteristics of the digital filter are adjusted by selecting a filter type and moving a control point within a window that shows the transfer function gain and (...)
Reference designs

TIDA-01529 — Cluster and eCall Audio Reference Design With Diagnostics

This reference design is based on the TAS2505-Q1, which is a low-power Class-D digital audio amplifier with analog, digital, and mixed input capabilities. This design shows TAS2505-Q1 as suitable for automotive cluster and eCall applications by showcasing the device's ability to run on a single 5-V (...)
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VQFN (RGE) 24 View options

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