The PCM2912A is the Texas Instruments 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, TI’s 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.
Feature
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
Sampling Rate:
8, 11.025, 16, 22.05, 32, 44.1, or 48 kHz
On-Chip Clock Generator:
Mono ADC with Microphone Input
Passband Ripple: ±0.05 dB
Stop-Band Attenuation: –65 dB
THD+N: 0.01%
SNR: 92 dB
Dynamic Range: 90 dB
Analog Performance at VBUS = 5 V:
Decimation Digital Filter
Single-Ended Voltage Input
Antialiasing Filter Included
Digital HPF Included
Microphone Bias, Microphone Amplifier, and Input PGA
Stereo DAC With Headphone Output
Passband Ripple: ±0.1 dB
Stop-Band Attenuation: –43 dB
Single-Ended Voltage Output
Analog LPF Included
Sidetone PGA, Output PGA, and HP Amplifier
THD+N: 0.01% (RL > 10 kΩ)
THD+N: 0.02% (RL = 32 Ω)
SNR: 92 dB
Dynamic Range: 90 dB
PO: 13 mW (RL = 32 Ω)
PO: 25 mW (RL = 16 Ω)
Analog Performance at VBUS = 5.0 V:
Oversampling Digital Filter
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
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
