09-21-2020, 01:19 PM
I'm familiar with only a few DAC chips or chip families that support what's called Oversampling Filter Bypass. There may be more.
Burr Brown PCM5XXX. When this chip is fed a 384kHz rate it's internal oversampling filter is automatically bypassed. Search for Table 8 in the data sheet.
https://www.ti.com/lit/ds/symlink/pcm512...52FPCM5122
ESS Sabre 9038Q2M. This chip supports an explicit setting to disable the internal oversampling FIR filter. The purpose of this setting is to allow an external oversampling filter to be used. The external filter must send 8X the source sample rate in order to maintain the correct bandwidth required by the IIR stage in the chip. For example with bypass enabled a 44.1 kHz source needs to resampled to 352.8 kHz. Enabling the bypass also disables internal volume control, master trim and soft mute...
Burr Brown PCM5XXX. When this chip is fed a 384kHz rate it's internal oversampling filter is automatically bypassed. Search for Table 8 in the data sheet.
https://www.ti.com/lit/ds/symlink/pcm512...52FPCM5122
ESS Sabre 9038Q2M. This chip supports an explicit setting to disable the internal oversampling FIR filter. The purpose of this setting is to allow an external oversampling filter to be used. The external filter must send 8X the source sample rate in order to maintain the correct bandwidth required by the IIR stage in the chip. For example with bypass enabled a 44.1 kHz source needs to resampled to 352.8 kHz. Enabling the bypass also disables internal volume control, master trim and soft mute...
