TAS2521

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Digital Input Class-D Speaker Amplifier with Embedded miniDSP and mono headphone amplifier

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Product details

Parameters

Audio input type Analog Input, Digital Input Architecture Class-D Speaker channels (Max) Mono Power stage supply (Max) (V) 1.95 Power stage supply (Min) (V) 1.5 Load (Min) (ohms) 4 Output power (W) 2 SNR (dB) 94 THD + N @ 1 kHz (%) 0.012 Iq (Typ) (mA) 0.002 Control interface I2C, SPI Closed/open loop Open Analog supply (Min) (V) 1.5 Analog supply (Max) (V) 1.95 Sampling rate (Max) (kHz) 192 PSRR (dB) 47.2 Operating temperature range (C) -40 to 85 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

Features

  • Digital Input Mono Speaker Amp
  • Instruction-Programmable Embedded miniDSP
  • Supports 8-kHz to 192-kHz Sample Rates
  • Mono Class-D BTL Speaker Driver (2 W Into 4 Ω or 1.7 W Into 8 Ωp)
  • Mono Headphone Driver
  • Two Single-Ended Inputs With Output Mixing and Level Control
  • Embedded Power-on-Reset
  • Integrated LDO
  • Built-in Digital Audio Processing Blocks With User-Programmable
    Biquad Filters
  • Integrated PLL Used for Programmable Digital Audio Processor
  • I2S, Left-Justified, Right-Justified, DSP, and TDM
    Audio Interfaces
  • I2C and SPI control with auto-increment
  • Full Power-Down Control
  • Power Supplies:
    • Analog: 1.5 V–1.95 V
    • Digital Core: 1.65 V–1.95 V
    • Digital I/O: 1.1 V–3.6 V
    • Class-D: 2.7 V–5.5 V (SPKVDD ≥ AVDD)
  • 24-Pin QFN Package (4mm × 4mm)
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Description

The TAS2521 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 upto 4-Ω, the device also features a mono headphone driver and a fully programmable miniDSP for signal processing. The digital audio data format is programmable to work with popular audio standard protocols (I2S, left/right-justified) in master, slave, DSP and TDM modes. The fully programmable miniDSP can support several functions such equalization for audio, multi-band DRC, tone generation and several other user defined functions. An on-chip PLL provides the high-speed clock needed by the digital signal-processing block. The volume level can be controlled by register control. The audio functions are controlled using the I2C serial bus or SPI bus. The device includes an on-board LDO that runs off the speaker power supply to handle all internal device analog and digital power needs. The included POR as power-on-resetcircuit reliably resets the device into its default state so no external reset is required at normal usage; however, the device does have a reset pin for more complex system initialization needs. The device also includes two analog inputs for mixing and muxing in both speaker and headphone analog paths.

This data manual is designed using PDF document-viewing features that allow quick access to information. For example, performing a global search on "page 0 / register 27" produces all references to this page and register in a list. This makes is easy to traverse the list and find all information related to a page and register. Note that the search string must be of the indicated format. Also, this document includes document hyperlinks to allow the user to quickly find a document reference. To come back to the original page, click the green left arrow near the PDF page number at the bottom of the file. The hot-key for this function is alt-left arrow on the keyboard. Another way to find information quickly is to use the PDF bookmarks.

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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 Digital Input Class-D Speaker Amplifier with Embedded miniDSP and Mono Headphone datasheet (Rev. A) Feb. 24, 2013
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 TAS25xx Codec Control EVM (Rev. A) Oct. 31, 2017
Application notes AN-1737 Managing EMI in Class D Audio Applications (Rev. A) May 01, 2013
User guides TAS2521 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

EVALUATION BOARDS Download
document-generic User guide
99
Description

The TAS2521 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 fully programmable miniDSP for signal processing. The digital audio data format is (...)

Features
  • Digital input mono speaker amp
  • Instruction-Programmable Embedded miniDSP
  • Supports 8-kHz to 192-kHz Sample Rates
  • Mono Class-D BTL Speaker Driver (2.6 W Into 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 (...)
  • GUIS FOR EVALUATION MODULES (EVM) Download
    SLAC772.ZIP (3110 KB)

    Design tools & simulation

    SIMULATION MODELS Download
    SLAM180.ZIP (125 KB) - IBIS Model
    SIMULATION TOOLS Download
    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 (...)
    Features
    • 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
    • (...)
    CALCULATION TOOLS Download
    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 (...)

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    Package Pins Download
    VQFN (RGE) 24 View options

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