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 open-in-new Find other Speaker amps

Package | Pins | Size

VQFN (RGE) 24 16 mm² 4 x 4 open-in-new Find other Speaker amps


  • 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

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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

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet TAS2505-Q1 2.6-W Digital/Analog Input Automotive Class-D Speaker Amplifier With Audio Processing datasheet (Rev. B) Oct. 11, 2018
Technical articles Exploring evolving trends in automotive cluster audio design Feb. 17, 2020
Application note Automotive Diagnostics Using TAS2505-Q1 (Rev. B) Aug. 23, 2018
User guide TAS25xx Codec Control EVM (Rev. A) Oct. 31, 2017
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) May 01, 2013
User guide TAS2505 Application Reference Guide Feb. 14, 2013

Design & development

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

Hardware development


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 (...)

  • Mono Class-D BTL Speaker Amplifier, 2.6 W at 10% THD (4 Ω, 5.5 V)
  • Load Diagnostic functions: Output to GND Short, Terminal to Terminal Short, Output to Power Short, Open Load, Overtemperature
  • Single 5-V Supply Rail
  • Supports 8-kHz to 96-kHz Sample Rates
  • Analog, Digital, and Mixed Input Capabilities

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 (...)

  • Digital input mono speaker amp
  • Supports 8-kHz to 96-kHz Sample Rates
  • Mono Class-D BTL Speaker Driver (2.6 W 4 Ω or 1.7 W Into 8 Ω)
  • Mono Headphone/Lineout Driver
  • Two Single-Ended Inputs With Output Mixing and Level Control
  • Embedded Power-on-Reset
  • Integrated LDO
  • Programmable Digital Audio Processing Blocks for (...)

Design tools & simulation

SLAM181.ZIP (125 KB) - IBIS Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
Coefficient Calculator For Digital Biquad Filters
COEFFICIENT-CALC 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

Cluster and eCall Audio Reference Design With Diagnostics
TIDA-01529 — 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 (...)
document-generic Schematic

CAD/CAE symbols

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VQFN (RGE) 24 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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