Audio transceiver in 48-LQFP
The Texas Instruments PCM9211PTR is an audio transceiver in a 48-LQFP (7x7 mm) surface-mount package, supporting sample rates from 7 kHz to 216 kHz across two channels.
Digital interface and control
Control and data routing go through I²C, I²S, and SPI interfaces — the I²S port handles the audio stream while I²C or SPI manages register configuration, so a single PCM9211PTR can bridge a digital audio source to a codec or DSP in a mixed-signal chain. The two-channel architecture means it handles stereo audio paths; the 7 kHz to 216 kHz sample-rate window covers everything from voice-band telephony through high-resolution 192 kHz playback.
It is ROHS3 compliant, so no exemption-based restrictions apply to its use in EU-market or other regulated assemblies.