Audio DAC for I²S digital audio streams
The Texas Instruments PCM1780DBQR is a 24-bit audio DAC that accepts I²S serial audio data and converts it to an analog output. Sampling up to 200k samples per second, it targets consumer and pro-audio equipment where the digital source is an I²S bus — common on media SoCs, DSPs, and HDMI receiver chips. The single 5V supply rail simplifies power routing on mixed-signal boards; no additional negative rail is needed.
24-bit resolution and 200k sampling rate
24-bit resolution and 200k sampling rate. The 200k sampling rate covers standard audio rates with headroom.
Package and supply constraints
The 5V single-supply requirement means the analog rail must be clean — a 5V LDO post-switcher is the usual practice.