Product category: Analogue and Mixed Signal ICs
News Release from: AKM Semiconductor | Subject: AK4683
Edited by the Electronicstalk Editorial Team on 15 September 2005
Audio codec claims ideal performance
The AK4683 is a multifunction audio codec ideal for performance-driven applications such as digital televisions, home theatre systems, DVD receivers and automotive amplifiers
Related stories
Electronic compass shrinks to chip-size packaging
AKM has completed development of the world's smallest and thinnest three-axis electronic compass with chip-size packaging of 2.5 x 2.5 x 0.5mm
D/A convertor samples at 24bit
AKM Semiconductor (AKM) has brought out the AK4341, a low-cost stereo 24bit 192kHz audio D/A convertor with an integrated 2V rms output buffer
Available now from AKM Semiconductor, the AK4683 is a multifunction audio codec ideal for performance-driven applications such as digital televisions, home theatre systems, DVD receivers and automotive amplifiers. This versatile chip integrates a two-channel ADC, a four-channel DAC (192kHz sampling), a headphone amplifier and a 192kHz compatible S/PDIF transceiver.
Both ADC and DAC feature 24bit resolution, with dynamic range of 100dB for the ADC and 106dB for the DAC.
The analogue input stage has a pre-amp with a six-channel input selector.
The pre-amp input range can be easily configured with external resistors to tolerate input signals above a 5V power supply, such as 2V RMS (up to 4V RMS).
Further reading
Audio codec takes headphone amp onboard
A low power 20bit audio codec with an integrated capless headphone amplifier is ideal for mobile phones, smart phones, music players and personal media players
Stereo DAC is optimised for handset audio
The AK4368 is a low power stereo DAC with an integrated 3D audio enhancement circuit, high output headphone amplifier and PLL
The post-ADC digital volume controls allow for channel-independent level adjustments from +24 to -103dB.
The AK4683's DAC has four output channels and integrated digital volume controls for channel-independent adjustment of the level from +12 to -115dB.
Two of the four channels have both headphone and line outputs, and the headphone output features a mute circuit that eliminates the need for an external circuit to suppress pop noise generated when power is switched on/off.
The AK4683's digital audio interface conforms to AES3, IEC60958, S/PDIF and EIAJ CP1201.
The digital audio transceiver is compatible with 192kHz, 24bit data, and can be operated asynchronously from the codec.
The DIR has a four-channel input selector and interfaces with many digital AV devices, as it detects both PCM and non-PCM data, such as Dolby Digital.
The serial audio interface for a digital signal processor (DSP) has two ports and each ADC, DAC and DIR/DIT block can be operated asynchronously.
The audio format is compatible with TDM systems and prepacked and postpacked I2S, which simplifies the DSP interface.
The AK4683 is available in a 64-pin LQFP package.
Priced from $4.40 in 10,000-unit volumes, evaluation boards and samples are available now.
• AKM Semiconductor: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Related Business News
Taiwan Shares Climb 0.9 Percent
Taiwan shares rose on Thursday as investors were cheered by U.S. stock gains overnight. The Weighted Price Index of the Taiwan Stock Exchange rose 49.39 points, or 0.9 percent, to close at 8061.28.
Acxiom Agrees to Be Acquired by...
...Silver Lake and ValueAct Capital for $3.0 Billion. Acxiom Corporation announced today that it has entered into a definitive agreement to be acquired by Silver Lake, the leading investment firm focused on large-scale investments in technology-driven growth industries, and ValueAct
Opnext Reports Fourth Quarter and Full Year Operating Results
Opnext, Inc. , a global leader in the design and manufacturing of optical modules and components, today announced preliminary and unaudited financial results for the fourth quarter and full year ended March 31, 2007.
Vista Partners Updates Coverage on TXP...
...Corporation; Maintains $0.80 Price Target. Vista Partners announced today that it has update coverage on TXP Corporation . Vista Partners provides equity research to institutional and individual investors, with a focus on publicly traded small capitalization companies.
Ceasefire in Gaza Strip begins to...
...take hold ahead of Abbas visit. Gaza City, Gaza Strip (AP) - A tenuous ceasefire between rival Fatah and Hamas forces appeared to be holding Thursday, and shellshocked residents emerged from their homes to stock up on food and supplies after four days of intense fighting brought the ci
