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TAS2521IRGER

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Texas Instruments Audio Amplifiers, VQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TAS2521IRGER

Texas Instruments · Audio Amplifiers · VQFN-24-EP(4x4)

TAS2521IRGER from Texas Instruments, in a VQFN-24-EP(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 SPI_SEL input Selects between SPI and I2C digital interface modes: 1 = SPI mode, 0 = I2C mode.
2 RST input Reset for logic, state machines and digital filters, asserted LOW.
3 AINL input Analog single-ended line left input, also usable as mixer and headphone driver input.
4 AINR input Analog single-ended line right input, also usable as mixer and headphone driver input.
5 HPOUT output Headphone and lineout driver output.
6 AVSS power_in Analog ground, 0 V.
7 AVDD power_in Analog core supply voltage, 1.5 V to 1.95 V, tied internally to the LDO output.
8 LDO_SEL input Select pin for the LDO; ties to either SPKVDD or SPKVSS.
9 SPKM output Class-D speaker driver inverting output.
10 SPKVDD power_in Class-D speaker driver power supply, 2.7 V to 5.5 V, must not be below AVDD to minimize battery leakage.
11 SPKVSS power_in Class-D speaker driver power supply ground.
12 SPKP output Class-D speaker driver non-inverting output.
13 DIN input Audio serial data bus input data.
14 WCLK bidirectional Audio serial data bus word clock.
15 BCLK bidirectional Audio serial data bus bit clock.
16 MCLK input Master clock input and reference clock for the PLL clock multiplier; PLLCLK equals CLKIN on startup, 50 MHz maximum.
17 MISO output SPI serial data output.
18 GPIO/DOUT bidirectional General-purpose I/O or audio serial bus output (I/O/Z per the datasheet pin table).
19 SCL/SSZ input I2C input serial clock or SPI chip select, depending on the SPI_SEL state.
20 SDA/MOSI input I2C serial data input or SPI serial data input (MOSI), depending on the SPI_SEL state.
21 SCLK input Serial clock for the SPI interface.
22 IOVDD power_in I/O power supply, 1.1 V to 3.6 V.
23 DVDD power_in Digital power supply, 1.65 V to 1.95 V.
24 DVSS power_in Digital ground, 0 V.
25 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VQFN-24-EP(4x4)
Category Amplifiers/Comparators
Pins 25

CAD (KiCad official)

  • Symbol: TAS2521IRGER
  • Footprint: Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm
  • 3D model: VQFN-24-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: tas2521irger-etched.step / tas2521irger-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tas2521irger.step / tas2521irger.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (37 pp, sha256 da7d823ef60b589b, retrieved 2026-10-12, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF