TPA6132A2

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25-mW DirectPath™ Stereo Headphone Amplifier with Pop Suppression (TPA6132)

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Product details

Parameters

Output power (W) 0.025 Analog supply (Min) (V) 2.3 Analog supply (Max) (V) 5.5 PSRR (dB) 100 Rating Catalog Operating temperature range (C) -40 to 85 Headphone channels Stereo Volume control No Shutdown current (ISD) (uA) 0.7 Architecture Class-AB Iq per channel (Typ) (mA) 1.05 open-in-new Find other Headphone amps

Package | Pins | Size

WQFN (RTE) 16 9 mm² 3 x 3 open-in-new Find other Headphone amps

Features

  • Patented DirectPath™ Technology Eliminates Need for DC-Blocking Capacitors
    • Outputs Biased at 0 V
    • Excellent Low Frequency Fidelity
  • Active Click and Pop Suppression
  • 2.1 mA Typical Supply Current
  • Fully Differential or Single-Ended Inputs
    • Built-In Resistors Reduces Component Count
    • Improves System Noise Performance
  • Constant Maximum Output Power from 2.3 V to 5.5 V Supply
    • Simplifies Design to Prevent Acoustic Shock
  • Improved RF Noise Immunity
  • MicrosoftTM Windows VistaTM Compliant
  • High Power Supply Noise Rejection
    • 100 dB PSRR at 217 Hz
    • 90 dB PSRR at 10 kHz
  • Wide Power Supply Range: 2.3 V to 5.5 V
  • Gain Settings: –6 dB, 0 dB, 3 dB, and 6 dB
  • Short-Circuit and Thermal-Overload Protection
  • ±8 kV HBM ESD Protected Outputs
  • Small Package Available
    • 16-Pin, 3 mm × 3 mm Thin QFN

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Description

The TPA6132A2 (sometimes referred to as TPA6132) is a DirectPath™ stereo headphone amplifier that eliminates the need for external dc-blocking output capacitors. Differential stereo inputs and built-in resistors set the device gain, further reducing external component count. Gain is selectable at –6 dB, 0 dB, 3 dB or 6 dB. The amplifier drives 25 mW into 16 Ω speakers from a single 2.3 V supply. The TPA6132A2 (TPA6132) provides a constant maximum output power independent of the supply voltage, thus facilitating the design for prevention of acoustic shock.

The TPA6132A2 features fully differential inputs to reduce system noise pickup between the audio source and the headphone amplifier. The high power supply noise rejection performance and differential architecture provides increased RF noise immunity. For single-ended input signals, connect INL+ and INR+ to ground.

The device has built-in pop suppression circuitry to completely eliminate disturbing pop noise during turn-on and turn-off. The amplifier outputs have short-circuit and thermal-overload protection along with ±8 kV HBM ESD protection, simplifying end equipment compliance to the IEC 61000-4-2 ESD standard.

The TPA6132A2 operates from a single 2.3 V to 5.5 V supply with 2.1 mA of typical supply current. Shutdown mode reduces supply current to less than 1 µA.

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Technical documentation

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Type Title Date
* Datasheet TPA6132A2 25-mW DirectPath™ Stereo Headphone Amplifier With Pop Suppression datasheet (Rev. B) Jul. 14, 2017
Application notes Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug. 26, 2019
Application notes AN-1849 An Audio Amplifier Power Supply Design (Rev. C) Jun. 27, 2019
More literature Журнал по применению аналоговых компонентов 2кв. 2010 Aug. 08, 2011
Application notes 2Q 2010 Issue Analog Applications Journal May 06, 2010
Application notes Precautions for connecting APA outputs to other devices May 06, 2010
Application notes Ground Loop Break (GLB) Circuits Oct. 01, 2009

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The TPA6132A2EVM2 allows the engineer to evaluate the TPA6132A2, a stereo DirectPath™ (capacitor-free) headphone amplifier with 4 gain settings (-6dB, 0dB, +3dB and +6dB).

Features
  • DirectPath™ Ground-Referenced Outputs
  • Wide Power Supply Range: 2.3 V to 5.5 V
  • Microsoft™ Windows Vista™ Compliant
  • Excellent Low Frequency Fidelity
  • Fully Differential or Single-Ended Input
  • Active Click and Pop Suppression
  • High Power Supply Noise Rejection
  • Gain Settings: –6 dB, 0 dB, 3 dB, and 6 dB
  • (...)

Design tools & simulation

SIMULATION MODELS Download
SLOM177.ZIP (48 KB) - PSpice Model
SIMULATION MODELS Download
SLOM178.TSC (74 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLOM179.ZIP (20 KB) - TINA-TI Spice Model

CAD/CAE symbols

Package Pins Download
WQFN (RTE) 16 View options

Ordering & quality

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