Parametric profile for BOM fit
The TLV320AIC34IZAS is a 24-bit audio codec from Texas Instruments, integrating four ADCs and four DACs on a single die — a channel count that suits multi-microphone arrays or multi-channel playback without external muxing. The ADC path delivers a 92 dB SNR (typ), while the DAC side reaches 102 dB SNR (typ), with dynamic range rated at 93 dB for the ADCs and 95 dB for the DACs — figures that place this codec in the mid-to-high fidelity range for voice and music-grade audio.
Housed in an 87-ball TFBGA (6x6 mm body, 0.50 mm pitch), the TLV320AIC34IZAS demands a multi-layer PCB with via-in-pad or microvia fan-out — the 87-NFBGA supplier device package is the same footprint, so the layout is identical regardless of the ball-count variant. Surface-mount assembly with a tray shipping medium; the 0.50 mm pitch requires a solder-paste stencil aperture matched to the BGA land diameter for consistent solder-joint volume.
Sigma-delta architecture and interface
Sigma-delta modulation is built in — the oversampling and noise-shaping push quantization noise out of the audio band, which is why the codec achieves its 92/102 dB SNR without an external anti-aliasing filter on the inputs. The PCM Audio Interface handles the serial digital stream to the host processor — I2S or similar left-justified format, depending on the configuration register setting.