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TPA6141A2

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32-mW, stereo, analog input headphone amplifier

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Data sheet

TPA6141A2

ACTIVE
Data sheet Order now

Product details

Output power (W) 0.025 Analog supply (min) (V) 2.5 Analog supply voltage (max) (V) 5.5 Load (min) (Ω) 16 PSRR (dB) 105 Rating Catalog Operating temperature range (°C) -40 to 85 Headphone channels Stereo Volume control No Shutdown current (ISD) (µA) 1 Architecture Class-G Iq per channel (typ) (mA) 0.6
Output power (W) 0.025 Analog supply (min) (V) 2.5 Analog supply voltage (max) (V) 5.5 Load (min) (Ω) 16 PSRR (dB) 105 Rating Catalog Operating temperature range (°C) -40 to 85 Headphone channels Stereo Volume control No Shutdown current (ISD) (µA) 1 Architecture Class-G Iq per channel (typ) (mA) 0.6
DSBGA (YFF) 16 3.24 mm² 1.8 x 1.8
  • TI Class-G Technology Significantly Prolongs Battery Life and Music Playback Time
    • 0.6 mA / Ch Quiescent Current
    • 50% to 80% Lower Quiescent Current Than Ground-Referenced Class-AB Headphone Amplifiers
  • DirectPathTM Technology Eliminates Large Output DC-Blocking Capacitors
    • Outputs Biased at 0 V
    • Improves Low Frequency Audio Fidelity
  • Active Click and Pop Suppression
  • Fully Differential Inputs Reduce System Noise
    • Also Configurable as Single-Ended Inputs
  • SGND Pin Eliminates Ground Loop Noise
  • Wide Power Supply Range: 2.5 V to 5.5 V
  • 100 dB Power Supply Noise Rejection
  • Built-in Input Low Pass Filter
  • Gain Settings: 0 dB and 6dB
  • Short-Circuit Current Limiter
  • Thermal-Overload Protection
  • ±8 kV HBM ESD Protected Outputs
  • 0,4 mm Pitch, 1,6 mm × 1,6 mm 16-Bump WCSP (YFF) Package
  • APPLICATIONS
    • Cellular Phones / Music Phones
    • Smart Phones
    • Portable Media / MP3 Players
    • Portable CD / DVD Players

All trademarks are the property of their respective owners.
  • TI Class-G Technology Significantly Prolongs Battery Life and Music Playback Time
    • 0.6 mA / Ch Quiescent Current
    • 50% to 80% Lower Quiescent Current Than Ground-Referenced Class-AB Headphone Amplifiers
  • DirectPathTM Technology Eliminates Large Output DC-Blocking Capacitors
    • Outputs Biased at 0 V
    • Improves Low Frequency Audio Fidelity
  • Active Click and Pop Suppression
  • Fully Differential Inputs Reduce System Noise
    • Also Configurable as Single-Ended Inputs
  • SGND Pin Eliminates Ground Loop Noise
  • Wide Power Supply Range: 2.5 V to 5.5 V
  • 100 dB Power Supply Noise Rejection
  • Built-in Input Low Pass Filter
  • Gain Settings: 0 dB and 6dB
  • Short-Circuit Current Limiter
  • Thermal-Overload Protection
  • ±8 kV HBM ESD Protected Outputs
  • 0,4 mm Pitch, 1,6 mm × 1,6 mm 16-Bump WCSP (YFF) Package
  • APPLICATIONS
    • Cellular Phones / Music Phones
    • Smart Phones
    • Portable Media / MP3 Players
    • Portable CD / DVD Players

All trademarks are the property of their respective owners.

The TPA6141A2 (also known as TPA6141) is a Class-G DirectPath stereo headphone amplifier with selectable gain. Class-G technology maximizes battery life by adjusting the voltage supplies of the headphone amplifier based on the audio signal level. At low level audio signals, the internal supply voltage is reduced to minimize power dissipation. DirectPathTM technology eliminates external DC-blocking capacitors.

The device features fully differential inputs with an integrated low pass filter to reduce system noise pickup between the audio source and the headphone amplifier and to reduce DAC out-of-band noise. 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 operates from a 2.5 V to 5.5 V supply voltage. Class-G operation keeps total supply current below 5.0 mA while delivering 500 µW per channel into 32 . Shutdown mode reduces the supply current to less than 3 µA and is activated through the EN pin.

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 TPA6141A2 (also known as TPA6141) is a Class-G DirectPath stereo headphone amplifier with selectable gain. Class-G technology maximizes battery life by adjusting the voltage supplies of the headphone amplifier based on the audio signal level. At low level audio signals, the internal supply voltage is reduced to minimize power dissipation. DirectPathTM technology eliminates external DC-blocking capacitors.

The device features fully differential inputs with an integrated low pass filter to reduce system noise pickup between the audio source and the headphone amplifier and to reduce DAC out-of-band noise. 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 operates from a 2.5 V to 5.5 V supply voltage. Class-G operation keeps total supply current below 5.0 mA while delivering 500 µW per channel into 32 . Shutdown mode reduces the supply current to less than 3 µA and is activated through the EN pin.

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.
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* Data sheet 25-mW Class-G DirectPath™ Stereo Headphone Amplifier with Gain Select datasheet (Rev. A) 18 Aug 2009
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) 26 Aug 2019
Application note AN-1849 An Audio Amplifier Power Supply Design (Rev. C) 27 Jun 2019
EVM User's guide TPA6141A2YFFEVM - User Guide 23 Jun 2009

Design & development

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Evaluation board

TPA6141A2YFFEVM — TPA6141A2YFF Evaluation Module

The TPA6141A2YFFEVM allows the engineer to evaluate the TPA6141A2, a stereo Class-G DirectPath™ (capacitor-free) headphone amplifier in a WCSP package. The TPA6141A2 has extremely low power consumption that enables much longer battery life in portable applications.

User guide: PDF
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