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.
● 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)
