2Vrms Ultra-Low-Power Amplifier

Class-H DirectConnect™ Headphone Amplifier

The TSDP11xx / TSDP10xx family are low-power 2Vrms Class-H architecture, Capless True Ground-Referenced Output Headphone amplifiers / Line Drivers with independent left/right volume control and a GPIO controlled shutdown pin.

The TSDP11xx also offers a two-wire I2C compatible serial control interface for controlling a wide variety of parameters for those looking to fine tune the amplifier’s performance vs. power efficiency.

Both devices provide exceptional audio fidelity with SNR / DNR of up to 106dB in addition to the highest continuous output power of up to 170mW (16Ω, <10% THD+N) per channel of *ANY* stereo combination HP amplifier / 2Vrms Line Driver or *ANY* stereo HP amplifier IC in its class.

The differential inputs allow for flexible input configuration that maximizes noise rejection for best-in-class CMRR, 21dB better than any other comparable high-power HP amplifier and/or 2Vrms Line Driver device on the market.

Furthermore, they both enable support for any load ranging from 16Ω up to 10KΩ, enabling a truly high-power 2Vrms HP Amplifier / Line-out Driver combination IC solution all without having to change a single passive component in the output filter stage or make any adjustments to any parameter.


  • Class-H TSDP11xx / TSDP10xx Capless DirectConnect Advantage
    • Low-power Class-H architecture reduces power consumption by as much as 45% at typical listening levels
    • Charge-pump design allows for true, ground-centered outputs without clicks and pops
    • Eliminates Large Output DC Blocking Capacitors
    • Reduces Board Area
    • Reduces Component Height and Cost
    • Full Bass Response Without Attenuation
    • No “Pop” on start-up or power-down
    • Reduced BOM Cost
    • Low Quiescent Current
  • Independent Left/Right Volume and Mute Control (Register Controlled – TSDP11xx only)
  • Power Supply Voltage Range: 2.5 V to 5.5 V
  • High Power Supply Rejection Ratio (>100dB PSRR)
  • Differential Inputs for Maximum Common Mode Rejection Ratio (90dB CMRR – 21dB better than the competition!)
  • High‐Impedance Outputs When Disabled (Register Controlled – TSDP11xx only)
  • GPIO Control for Hardware Shutdown
  • Advanced control of registers is possible using the I2C compatible two-wire serial interface (TSDP11xx only)
  • 20 Pin, 4 mm x 4 mm QFN RoHS Package
  • The TSDP10xx is both performance AND price competitive at ANY volume with the TI TPA6130A2
  • The TSDP11xx is both performance AND price competitive at ANY volume with the TI TPA6133A2 or TI DRV604PWPR or TI DRV604PWP

Target Applications

Product Specifications

Interface Max Continuous Power into 16 Ohms
(< 10% THD+N)
Min Analog Supply Voltage (V) Max Analog Supply Voltage (V) Max Voltage into 10K Ohm Amplifier Architecture Low Power Mode
Differential Analog Input, two-wire I2C-compatible Serial Control* (TSDP11xx*), Single-Ended Analog Output 170mW 2.5 5.5 2Vrms Stereo Class-H Yes


Title Type Format File Size Post Date File Date / Version
 TSDP11xx / TSDP10xx Reference Schematic Reference Schematic PDF 64kB 11-13-17 11-13-17, Rev A
TSDP11xx / TSDP10xx Product Brief Product Brief PDF 168kB 6-12-18 v1.4
TSDP11xx / TSDP10xx Data Sheet Data Sheet PDF 591kB 6-18-18 v1.5
TSDP11xx / TSDP10xx Evaluation Board Quick Guide Quick Guide PDF TBD TBD TBD