Summary of Analog Devices’ Audio Codecs Offer the Industry’s Best Audio Experience, Lowest Power Dissipation : – ADI’s ADAU1361 low-power stereo audio codec leads the industry in audio performance at lowest dissipated power, while the ADAU1761 adds support for ADI’s audio algorithm suite or licensed third party algorithms.
This article introduces the ADAU1361 and ADAU1761 audio codecs, highlighting their stereo ADCs and DACs supporting 8 kHz to 96 kHz sample rates. Key features include digital volume control, versatile analog inputs for microphones and line sources, and multiple analog outputs for headphones and earpieces. The devices support AC-coupled configurations and interface with Class-D power amplifiers via differential lines.
Parts used in the ADAU1361 and ADAU1761 Audio Codecs Project:
- Stereo audio ADCs
- DACs (digital-to-analog converters)
- Digital volume control circuit
- Stereo line input stage
- Stereo analog microphone interface
- Microphone bias voltage circuit
- High-performance low-noise digital microphones
- Differential output stage
- Single-ended output stage
- Class-D power amplifiers
SAN FRANCISCO (PRWEB) October 2, 2008
The ADAU1361 and ADAU1761 audio codecs include stereo audio ADCs (analog-to-digital converters) and DACs (digital-to-analog converters) that support sample rates from 8 kHz to 96 kHz, and a digital volume control. The analog input stage supports a stereo line input, a stereo analog microphone interface and a circuit to supply the microphone bias voltage. It also supports the new standard in high-performance low-noise, digital microphones.
The analog output stage includes two differential and three single-ended outputs, allowing for the direct connection of stereo headphones, an earpiece and other output transducers. AC-coupled or “capless” configurations are supported for the headphone interface. The differential line outputs can interface to a broad portfolio of ADI’s Class-D power amplifiers.
The serial control bus supports the I
- What sample rates do the ADAU1361 and ADAU1761 support?
They support sample rates from 8 kHz to 96 kHz. - Does the codec include digital volume control?
Yes, the device includes a digital volume control feature. - Can these codecs connect directly to Class-D power amplifiers?
Yes, the differential line outputs can interface to ADI's Class-D power amplifiers. - What types of microphone interfaces are supported?
The analog input stage supports a stereo analog microphone interface and high-performance low-noise digital microphones. - How many analog output stages does the codec have?
The analog output stage includes two differential and three single-ended outputs. - Are AC-coupled headphone configurations supported?
Yes, AC-coupled or capless configurations are supported for the headphone interface. - What is the function of the microphone bias voltage circuit?
It supplies the necessary bias voltage for the microphone interface. - Can the codec drive an earpiece directly?
Yes, the outputs allow for the direct connection of an earpiece.
