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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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Data sheet

TPA2028D1

ACTIVE
Data sheet Order now

Product details

Audio input type Analog Input Architecture Class-D Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.7 Load (min) (Ω) 4 Output power (W) 3 SNR (dB) 95 THD + N at 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
Audio input type Analog Input Architecture Class-D Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.7 Load (min) (Ω) 4 Output power (W) 3 SNR (dB) 95 THD + N at 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
DSBGA (YZF) 9 3.0625 mm² 1.75 x 1.75
  • 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

All other trademarks are the property of their respective owners
  • 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

All other trademarks are the property of their respective owners

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.

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) PDF | HTML 31 Oct 2015
More literature Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) 26 Aug 2019
More literature AN-1849 An Audio Amplifier Power Supply Design (Rev. C) 27 Jun 2019
More literature AN-1737 Managing EMI in Class D Audio Applications (Rev. A) 01 May 2013
User guide TPA2028D1 User's Guide 10 Feb 2010

Design & development

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Simulation model

TPA2028D1 IBIS Model

SLOM321.ZIP (9 KB) - IBIS Model
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Simulation model

TPA2028D1 PSpice Transient Model (Rev. A)

SLOM164A.ZIP (27 KB) - PSpice Model
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Simulation model

TPA2028D1 TINA-TI Transient Reference Design

SLOM166.TSC (170 KB) - TINA-TI Reference Design
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Simulation model

TPA2028D1 TINA-TI Transient Spice Model

SLOM165.ZIP (69 KB) - TINA-TI Spice Model
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Simulation tool

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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 (...)
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