ZHCSHK8B October 2017 – October 2018 TAS2770
Select the bulk capacitors at the VBAT inputs for proper voltage margin and adequate capacitance to support the power requirements. The TAS2770 has very good PSRR, so the capacitor is more about limiting the ripple and droop for the rest of system than preserving good audio performance. The amount of bulk decoupling can be reduced as long as the droop and ripple is acceptable. One capacitor should be placed near the VBAT pin. VBATY capacitors should be a low ESR type because they are being used in a high-speed switching application.