PCM2912APJTR Audio Power Amplifier IC Audio D/A Converter ICs 16B Audio CODEC w/ USB interface
digital audio amplifier ic
,audio preamplifier ic
PCM2912APJTR Audio Power Amplifier IC Audio D/A Converter ICs 16B Audio CODEC w/ USB interface
1 Features
- 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:
– With Single 6-MHz Clock Source
Mono ADC with Microphone Input
– Analog Performance at VBUS = 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 VBUS = 5.0 V:
• 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
2 Applications
USB Headset
USB Headphone
USB Speaker
USB Featured Consumer Audio Product
USB Audio Interface Box
USB Monitor
Video Conference System
– 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)
– 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
3 Description
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 SpActTM 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.
Device Information
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
PCM2912A | TQFP (32) | 7.00 mm × 7.00 mm |
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