TI PCM2912APJT

The PCM2912A is the single-chip, USB stereo audio codec with a USB, 2.0-compliant, full-speed protocol controller and an analog front-end (AFE) function for headset applications. The USB protocol controller works with no software code, but USB descriptors can be modified on request. The PCM2912A employs SpAct™ architecture, unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enables independent playback and record sampling rates with low clock jitters.

• On-Chip USB Interface:
• With Full-Speed Transceivers
• Fully Compliant With USB 2.0 Specification
• Certified By USB-IF
• Partially Programmable Descriptors
• Adaptive Isochronous Transfer for Playback
• Asynchronous-Isochronous Transfer for Record
• Bus Powered
• 16-Bit Delta-Sigma ADC and DAC
• Analog Performance at V_BUS = 5 V: THD + N: 0.01% – SNR: 92 dB Dynamic Range: 90 dB
• Decimation Digital Filter Passband Ripple: ±0.05 dB Stop-Band Attenuation: -65 dB
• Single-Ended Voltage Input
• Antialiasing Filter Included
• Digital HPF Included
• Microphone Bias, Microphone Amplifier, and Input PGA
• Stereo DAC With Headphone Output
• Analog Performance at V_BUS = 5.0 V: THD+N: 0.01% (R_L > 10 kΩ) THD+N: 0.02% (R_L = 32 Ω) SNR: 92 dB Dynamic Range: 90 dB PO: 13 mW (R_L = 32 Ω) PO: 25 mW (R_L = 16 Ω)
• Oversampling Digital Filter
• Passband Ripple: ±0.1 dB
• Stop-Band Attenuation: –43 dB
• Single-Ended Voltage Output
• Analog LPF Included
• Sidetone PGA, Output PGA, and HP Amplifier
• Multifunctions: – Suspend, Playback, and Record Status Flag – Microphone Amplifier, Mute, and Gain Control Pop/Click Noise-Free
• Single Power-Supply: 5 V Typical (VBUS)
• Package: 32-Pin TQFP

• USB Headset
• USB Headphone
• USB Speaker
• USB Featured Consumer Audio Product
• USB Audio Interface Box
• USB Monitor Video Conference System