TPA2028D1

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3-W, mono, analog input Class-D audio amp with fast auto. gain control & dynamic range compression

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Product details

Parameters

Audio input type Analog 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) 3 SNR (dB) 95 THD + N @ 1 kHz (%) 0.1 Iq (Typ) (mA) 2 Control interface I2C Closed/open loop Open Analog supply (Min) (V) 2.5 Analog supply (Max) (V) 5.5 PSRR (dB) 80 Operating temperature range (C) -40 to 85 open-in-new Find other Speaker amps

Package | Pins | Size

DSBGA (YZF) 9 3 mm² 1.664 x 1.664 open-in-new Find other Speaker amps

Features

  • Fast AGC Start-up Time: 5 ms
  • Pinout Compatible with TPA2018D1
  • Filter-Free Class-D Architecture
  • 3 W Into 4 Ω at 5 V (10% THD+N)
  • 880 mW Into 8 Ω at 3.6 V (10% THD+N)
  • Power Supply Range: 2.5 V to 5.5 V
  • Flexible Operation With/Without I2C™
  • Programmable DRC/AGC Parameters
  • Digital I2C™ Volume Control
  • Selectable Gain from –28 dB to 30 dB in 1-dB
    Steps (when compression is used)
  • Selectable Attack, Release and Hold Times
  • 4 Selectable Compression Ratios
  • Low Supply Current: 1.8 mA
  • Low Shutdown Current: 0.2 µA
  • High PSRR: 80 dB
  • AGC Enable/Disable Function
  • Limiter Enable/Disable Function
  • Short-Circuit and Thermal Protection
  • Space-Saving Package
    • 1.63 mm × 1.63 mm Nano-Free™ DSBGA
      (YZF)
  • APPLICATIONS
    • Wireless or Cellular Handsets and PDAs
    • Portable Navigation Devices
    • Portable DVD Player
    • Notebook PCs
    • Portable Radio
    • Portable Games
    • Educational Toys
    • USB Speakers

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Description

The TPA2028D1 device is a mono, filter-free Class-D audio power amplifier with volume control, fast gain ramp SmartGain, dynamic range compression (DRC), and automatic gain control (AGC). It is available in a 1.63 mm × 1.63 mm wafer chip-scale package (DSBGA).

The DRC/AGC function in the TPA2028D1 device is programmable through a digital I2C interface. The DRC/AGC function can be configured to automatically prevent distortion of the audio signal and enhance quiet passages that are normally not heard. The DRC/AGC can also be configured to protect the speaker from damage at high power levels and compress the dynamic range of music to fit within the dynamic range of the speaker. The gain can be selected from –28 dB to +30 dB in 1-dB steps. The TPA2028D1 is capable of driving 3 W at 5 V into a 4-Ω load or 880 mW at 3.6 V into an 8-Ω load. The device features hardware and software shutdown controls and also provides thermal and short-circuit protection. The TPA2028D1 has a faster AGC gain ramp during start-up than TPA2018D1.

In addition to these features, a fast start-up time and small package size make the TPA2028D1 an ideal choice for cellular handsets, PDAs and other portable applications.

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Technical documentation

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Type Title Date
* Data sheet TPA2028D1 3-W Mono Class-D Audio Amplifier With Fast Gain Ramp SmartGain™ AGC/DRC datasheet (Rev. C) Oct. 31, 2015
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug. 26, 2019
Application note AN-1849 An Audio Amplifier Power Supply Design (Rev. C) Jun. 27, 2019
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) May 01, 2013
User guide TPA2028D1 User's Guide Feb. 10, 2010

Design & development

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Hardware development

EVALUATION BOARD Download
document-generic User guide
99
Description

The TPA2028D1 is a mono, filter-free Class-D audio power amplifier with automatic gain control (AGC), dynamic range compression (DRC) and I2C digital volume control. The AGC and DRC functions enhance the perceived audio loudness, and at the same time prevent speaker damage from overdrive. The (...)

Features
  • Mono speaker amplifier operation
  • On board USB-to-I2C controller
  • Analog RCA input connectors

Design tools & simulation

SIMULATION MODEL Download
SLOM164A.ZIP (27 KB) - PSpice Model
SIMULATION MODEL Download
SLOM165.ZIP (69 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SLOM166.TSC (170 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLOM321.ZIP (9 KB) - IBIS Model
SIMULATION TOOL 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
  • (...)

CAD/CAE symbols

Package Pins Download
DSBGA (YZF) 9 View options

Ordering & quality

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