TPA6130A2 - 138-mW DirectPath&#153 Stereo Headphone Amplifier with I2C Volume Control (TPA6130)

The TPA6130A2 is a stereo DirectPath™ headphone amplifier with I²C digital volume control. The TPA6130A2 has minimal quiescent current consumption, with a typical I_DD of 4 mA, making it optimal for portable applications. The I²C control allows maximum flexibility with a 64 step audio taper volume control, channel independent enables and mutes, and the ability to configure the outputs into stereo, dual mono, or a single receiver speaker BTL amplifier that drives 300 mW of power into 16 Ω loads.

The TPA6130A2 is a high fidelity amplifier with an SNR of 98 dB. A PSRR greater than 100 dB enables direct-to-battery connections without compromising the listening experience. The output noise of 9 µVrms (typical A-weighted) provides a minimal noise background during periods of silence. Configurable differential inputs and high CMRR allow for maximum noise rejection in the noisy environment of a mobile device.

TPA6130A2 packaging includes a 2 by 2 mm chip-scale package, and a 4 by 4 mm QFN package.

• DirectPath™ Ground-Referenced Outputs
  • Eliminates Output DC Blocking Capacitors
  • Reduces Board Area
  • Reduces Component Height and Cost
  • Full Bass Response Without Attenuation
• Power Supply Voltage Range: 2.5 V to 5.5 V
• 64 Step Audio Taper Volume Control
• High Power Supply Rejection Ratio
  (>100 dB PSRR)
• Differential Inputs for Maximum Noise Rejection
  (68 dB CMRR)
• High-Impedance Outputs When Disabled
• Advanced Pop and Click Suppression Circuitry
• Digital I²C Bus Control
  • Per Channel Mute and Enable
  • Software Shutdown
  • Multi-Mode Support: Stereo HP, Dual Mono
    HP, and Single-Channel BTL Operation
  • Amplifier Status
• Space Saving Packages
  • 20 Pin, 4 mm × 4 mm QFN
  • 16 ball, 2 mm × 2 mm DSBGA
• ESD Protection of 8 kV HBM and IEC Contact