封装信息
| 封装 | 引脚 TQFP (PJT) | 32 |
| 工作温度范围 (°C) -25 to 85 |
| 包装数量 | 包装 1,000 | LARGE T&R |
PCM2912A 的特性
- 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
- Analog Performance at VBUS = 5 V:
- Stereo DAC With Headphone Output
- Analog Performance at VBUS = 5.0 V:
- 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
- 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
PCM2912A 的说明
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.