PCM codec with programmable mic amp — what this chip is
The Texas Instruments TLV320AIC1110PBS is a PCM audio codec that integrates a sigma-delta ADC and DAC, each with 15-bit resolution, in a single 32-TQFP package. It's designed for voice-band and low-to-medium fidelity audio applications where a compact, single-supply codec is needed — think hands-free car kits, intercoms, VoIP terminals, and portable voice recorders. The part includes a programmable microphone amplifier, which the datasheet confirms as a key feature, letting you adjust gain without external op-amps.
Supply rails and temperature range — fit for industrial audio
Both analog and digital supply rails share a common range of 2.7 V to 3.3 V, so a single 3.3 V rail powers the whole codec — no separate 1.8 V or 5 V needed. That simplifies the power tree on a mixed-signal board, but watch the decoupling: the analog supply pin wants its own clean feed, not just a shared ferrite bead with the digital side.
It's ROHS3 compliant, which means no exemption expiry worries for EU-market builds. For a production BOM, this is a low-risk line item — no need to stockpile or qualify a second source right now.
Package and mounting — 32-TQFP with 5x5 mm body
The 32-TQFP (5x5 mm) is a fine-pitch surface-mount package — 0.8 mm pitch typical for this body size. It's hand-solderable with a fine tip and flux, but for reflow, MSL level is typically 3 for TQFPs (confirm on the reel label). The exposed pad on the bottom is the thermal and ground slug; make sure your PCB has a matching pad with vias to the ground plane, or the die temperature climbs faster than you'd expect in a 85°C ambient.