32-bit, 192 kHz stereo ADC with I²S/TDM
The Texas Instruments PCM1820IRTER is a stereo-channel, 32-bit audio ADC from the Burr-Brown™ series, sampling from 8 kHz up to 192 kHz. The dual-supply architecture separates the analog rail (3V to 3.6V) from the digital I/O rail (1.65V to 1.95V), so it can interface directly with a 1.8V logic domain without an external level shifter.
Dual supply rails and 1.8V digital compatibility
The digital supply range of 1.65V to 1.95V means the PCM1820IRTER is compatible with a 1.8V digital supply — a common I/O voltage for modern SoCs and FPGAs. The analog supply runs from 3V to 3.6V, typically 3.3V. This split-rail design keeps the analog performance clean while matching the digital interface voltage of the host processor.
20-WFQFN with exposed pad — layout notes
The package is a 20-WFQFN with an exposed pad (3x3 mm body, supplier device package 20-WQFN). Surface-mount only. The small footprint suits space-constrained audio capture boards.