Overview
The PCM2906CDBR, developed by Texas Instruments, is a USB stereo audio codec designed for use in portable, battery-powered devices. It integrates a USB-compliant full-speed protocol controller with audio processing capabilities, supporting stereo audio input and output at a 16-bit resolution. This codec is ideal for applications requiring reliable audio quality, such as audio playback, telephony, and general-purpose audio processing.
Key Specifications
| Specification | Details |
|---|---|
| Product Type | USB Audio CODEC |
| Manufacturer | Texas Instruments |
| Number of ADCs/DACs | 1 ADC, 1 DAC |
| Audio Interface | Stereo audio input and output |
| Resolution | 16-bit |
| Package Type | 28-pin SSOP (Shrink Small Outline Package) |
| USB Interface | USB 2.0 Full-Speed (12 Mbps), USB-compliant protocol controller |
| Power Supply | 3.3V or 5V |
| Power Consumption | Typical operating current: 67 mA |
| Sampling Rate | Up to 48 kHz |
| Signal-to-noise ratio (SNR) | 96 dB (typical) |
| Total Harmonic Distortion (THD) | 0.005% (typical) for DAC |
| Operating Temperature Range | -25°C to +85°C |
| Compliance | RoHS Compliant, CE certified, UL-recognized |
Key Features
- USB Interface: Fully compliant with USB 2.0 specification and certified by USB-IF. Supports USB adaptive mode for playback and USB asynchronous mode for recording.
- Audio Processing: 16-bit Delta-Sigma ADC and DAC. Supports multiple sampling rates (8 kHz to 48 kHz for ADC, 32 kHz, 44.1 kHz, and 48 kHz for DAC).
- S/PDIF I/O: Integrated S/PDIF input and output for digital audio connectivity.
- Digital Filters: Oversampling digital filters for DAC and decimation filter for ADC. Analog filters include antialiasing filter for ADC and low-pass filter (LPF) for DAC.
- Human Interface Device (HID) Functions: Volume control and mute functions.
- Power Management: Bus-powered operation with a typical 5V supply. Low-power suspend mode to reduce power consumption when not in active use.
Applications
- Portable audio devices
- Telephony
- USB audio applications
- Multimedia systems
- General-purpose audio processing
Q & A
- What is the PCM2906CDBR?
The PCM2906CDBR is a USB stereo audio codec developed by Texas Instruments, designed for use in portable, battery-powered devices.
- What is the resolution of the PCM2906CDBR?
The PCM2906CDBR supports 16-bit audio resolution.
- What type of USB interface does the PCM2906CDBR support?
The PCM2906CDBR supports a USB 2.0 Full-Speed interface.
- What are the typical operating currents for the PCM2906CDBR?
The typical operating current is 67 mA.
- What is the signal-to-noise ratio (SNR) of the PCM2906CDBR?
The SNR is 96 dB (typical).
- Does the PCM2906CDBR support S/PDIF I/O?
- What are the supported sampling rates for the PCM2906CDBR?
The ADC supports sampling rates of 8 kHz to 48 kHz, and the DAC supports 32 kHz, 44.1 kHz, and 48 kHz.
- Is the PCM2906CDBR RoHS compliant?
- What is the operating temperature range of the PCM2906CDBR?
The operating temperature range is -25°C to +85°C.
- Does the PCM2906CDBR have low-power modes?
