2-W, mono, analog input Class-AB audio amplifier with headphone amplfier & low supply current


Product details


Audio input type Analog Input Architecture Class-AB Speaker channels (Max) Mono Power stage supply (Max) (V) 5.5 Power stage supply (Min) (V) 2.5 Load (Min) (ohms) 4 Output power (W) 2 SNR (dB) 93 THD + N @ 1 kHz (%) 0.2 Iq (Typ) (mA) 4 Control interface Hardware Closed/open loop Open Analog supply (Min) (V) 2.5 Analog supply (Max) (V) 5.5 PSRR (dB) 58 Operating temperature range (C) -40 to 125 open-in-new Find other Speaker amps

Package | Pins | Size

HVSSOP (DGQ) 10 9 mm² 3 x 3 open-in-new Find other Speaker amps


  • Ideal for Notebook Computers, PDAs, and Other Small Portable Audio Devices
  • 2 W Into 4 From 5-V Supply
  • 0.6 W Into 4 From 3-V Supply
  • Stereo Head Phone Drive
  • Mono (BTL) Signal Created by Summing Left and Right Signals
  • Wide Power Supply Compatibility 3 V to 5 V
  • Meets PC99 Portable Specs (target)
  • Low Supply Current
    • 4 mA Typical at 5 V
    • 3.3 mA Typical at 3 V
  • Shutdown Control ...1 uA Typical
  • Shutdown Pin is TTL Compatible
  • –40°C to 85°C Operating Temperature Range
  • Space-Saving, Thermally-Enhanced MSOP Packaging

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The TPA0233 is a 2-W mono bridge-tied-load (BTL) amplifier designed to drive speakers with as low as 4- speaker.

The gain of the input stage is set by the user-selected input resistor and a 50-k/ RI in BTL mode. The input terminals are high-impedance CMOS inputs, and can be used as summing nodes.

The TPA0233 is available in the 10-pin thermally-enhanced MSOP package (DGQ) and operates over an ambient temperature range of –40°C to 85°C.

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TPA0103 ACTIVE 1.75-W, stereo, analog input Class-AB audio amplifier TPA0212 is a 2-W, mono speaker driver with integrated stereo headphone Class-AB Audio Power Amplifier, featuring separate inputs.

Technical documentation

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Type Title Date
* Data sheet 2-W Mono Audio Power Amplifier with Headphone Drive datasheet (Rev. D) Oct. 04, 2002
User guide TPA0233EVM - User Guide Nov. 07, 2000

Design & development

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Hardware development

document-generic User guide

The TPA0233 is a 2-W mono or stereo audio power amplifier designed to drive a 4 Ohm speaker or stereo headphones. The mono signal is created by summing the left and right inputs. The TPA0233 can switch between a mono speaker and stereo headphones on-the-fly, making it ideal for small notebook (...)

  • 2 W momo speaker output
  • Stereo headphone output
  • Wide operating voltage...3 V to 5.5 V
  • Shutdown control...1 µA
  • Ultra-small MSOP PowerPAD package

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CAD/CAE symbols

Package Pins Download
HVSSOP (DGQ) 10 View options

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