Product details

Output power (W) 0.025 Analog supply (min) (V) 3 Analog supply voltage (max) (V) 3.6 Load (min) (Ω) 32 PSRR (dB) 80 Rating Catalog Operating temperature range (°C) -40 to 150 Headphone channels Stereo Volume control No Shutdown current (ISD) (µA) 1 Architecture Class-AB Iq per channel (typ) (mA) 25
Output power (W) 0.025 Analog supply (min) (V) 3 Analog supply voltage (max) (V) 3.6 Load (min) (Ω) 32 PSRR (dB) 80 Rating Catalog Operating temperature range (°C) -40 to 150 Headphone channels Stereo Volume control No Shutdown current (ISD) (µA) 1 Architecture Class-AB Iq per channel (typ) (mA) 25
TSSOP (PW) 14 32 mm² 5 x 6.4 VQFN (RGT) 16 9 mm² 3 x 3
  • DirectPath™
    • Eliminates Pops and Clicks
    • Eliminates Output DC-Blocking Capacitors
    • 3-V to 3.6-V Supply Voltage
  • Low Noise and THD
    • SNR > 105 dB at –1x Gain
    • Typical Vn < 15 µVms 20 to 20 kHz at –1x
      Gain
    • THD+N < 0.003% at 10-kΩ Load and –1x Gain
  • 25 mW into 32-Ω Load
  • 2-Vrms Output Voltage into 600-Ω Load
  • Single-Ended Input and Output
  • Programmable Gain Select Reduces Component
    Count
    • 13x Gain Values
  • Active Mute With More Than 80-dB Attenuation
  • Short-Circuit and Thermal Protection
  • ±8-kV HBM ESD Protected Outputs
  • DirectPath™
    • Eliminates Pops and Clicks
    • Eliminates Output DC-Blocking Capacitors
    • 3-V to 3.6-V Supply Voltage
  • Low Noise and THD
    • SNR > 105 dB at –1x Gain
    • Typical Vn < 15 µVms 20 to 20 kHz at –1x
      Gain
    • THD+N < 0.003% at 10-kΩ Load and –1x Gain
  • 25 mW into 32-Ω Load
  • 2-Vrms Output Voltage into 600-Ω Load
  • Single-Ended Input and Output
  • Programmable Gain Select Reduces Component
    Count
    • 13x Gain Values
  • Active Mute With More Than 80-dB Attenuation
  • Short-Circuit and Thermal Protection
  • ±8-kV HBM ESD Protected Outputs

The TPA6139A2 is a 25-mW, pop-free stereo headphone driver designed to reduce component count, board space and cost. It is ideal for single-supply electronics where size and cost are critical design parameters.

The TPA6139A2 device does not require a power supply greater than 3.3 V to generate its 25 mW, nor does it require a split rail power supply.

The TPA6139A2 device was designed using TI’s patented DirectPath™ technology, which integrates a charge pump to generate a negative supply rail that provides a clean, pop-free ground biased output. The TPA6139A2 is capable of driving 25 mW into a 32-Ω load and 2 Vrms into a 600-Ω load. DirectPath also allows the removal of the costly output DC-blocking capacitors.

The device has fixed gain single-ended inputs with a gain select pin. Using a single resistor on this pin, the designer can choose from 13 internal programmable gain settings to match the line driver with the CODEC output level. It also reduces the component count and board space.

Headphone outputs have &plusm;8-kV HBM ESD protection enabling a simple ESD protection circuit. The TPA6139A2 has built-in active mute control with more that 80-dB attenuation for pop-free mute ON and OFF control.

The TPA6139A2 device is available in a 14-pin TSSOP and a 16-pin QFN. For a pin-compatible, 2-Vrms line driver see DRV612.

The TPA6139A2 is a 25-mW, pop-free stereo headphone driver designed to reduce component count, board space and cost. It is ideal for single-supply electronics where size and cost are critical design parameters.

The TPA6139A2 device does not require a power supply greater than 3.3 V to generate its 25 mW, nor does it require a split rail power supply.

The TPA6139A2 device was designed using TI’s patented DirectPath™ technology, which integrates a charge pump to generate a negative supply rail that provides a clean, pop-free ground biased output. The TPA6139A2 is capable of driving 25 mW into a 32-Ω load and 2 Vrms into a 600-Ω load. DirectPath also allows the removal of the costly output DC-blocking capacitors.

The device has fixed gain single-ended inputs with a gain select pin. Using a single resistor on this pin, the designer can choose from 13 internal programmable gain settings to match the line driver with the CODEC output level. It also reduces the component count and board space.

Headphone outputs have &plusm;8-kV HBM ESD protection enabling a simple ESD protection circuit. The TPA6139A2 has built-in active mute control with more that 80-dB attenuation for pop-free mute ON and OFF control.

The TPA6139A2 device is available in a 14-pin TSSOP and a 16-pin QFN. For a pin-compatible, 2-Vrms line driver see DRV612.

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Technical documentation

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Type Title Date
* Data sheet TPA6139A2 DirectPath™ 25-mW Headphone Amplifier With Programmable-Fixed Gain datasheet (Rev. C) PDF | HTML 27 Apr 2016
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 TPA6139A2 EVM User's Guide 10 Nov 2010

Design & development

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

Evaluation board

TPA6139A2EVM — TPA6139A2EVM Evaluation Module

The TPA6139A2EVM customer evaluation module (EVM) demonstrates the capabilities and operation of the TPA6139A2PW integrated circuit from Texas Instruments. The TPA6139A2PW is a 25mW Pop-Free stereo Head Phone driver designed to reduce component count, board space and cost. It is ideal for single (...)

User guide: PDF
Not available on TI.com
Simulation model

TPA6139A2 PSpice Transient Model

SLOM215.ZIP (26 KB) - PSpice Model
Simulation model

TPA6139A2 TINA-TI Transient Reference Design

SLOM217.TSC (26 KB) - TINA-TI Reference Design
Simulation model

TPA6139A2 TINA-TI Transient Spice Model

SLOM216.ZIP (20 KB) - TINA-TI Spice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Package Pins Download
TSSOP (PW) 14 View options
VQFN (RGT) 16 View options

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  • Assembly location

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