STEVAL-CCA009V1: HiFi Headphone Amp

The TS4601B is a stereo headphone driver dedicated to high audio performance and space-constrained applications. It is based on a low-power dissipation amplifier core technology. Special care was taken in the design of the amplification chain to achieve peerless PSRR (107 dB typ. at 217 Hz) and 101 dB of SNR.

The TS4601B can drive at minimum 0.9 Vrms output voltage into 16 Ohms and 1.6 Vrms into 10 kOhms regardless of the power supply voltage.

An I2C interface is used to control the volume through 64 steps ranging from -60 dB to +4 dB and to configure the device in multiple modes. The traditionally-used output-coupling capacitors can be removed and a dedicated common-mode sense pin suppresses parasitic noise from the jack.