TI Configurable Codec Enables Independent Converter Sampling
Texas Instruments Incorporated (TI) (NYSE: TXN) introduced a 24-bit audio codec that supports asynchronous operation, allowing the analog-to-digital converter (ADC) and digital-to-analog converter (DAC) to operate with independent clocks. In applications such as DVD/Blu-Ray/HD-DVD recorders, digital televisions, digital set-top boxes and car navigation systems, audio signals often need to be decoded and encoded at separate sampling rates, which drives the need for an asynchronous audio codec.
The PCM3060 also offers design flexibility and excellent audio performance. For example, the DAC outputs can be configured as either single-ended or differential for better noise immunity. The new codec enables designers to select the control method among modes of three-wire SPI, two-wire I2C or hardware control, depending on the application and system design requirements. Additionally, the codec can be internally set to synchronous mode where either the ADC or the DAC clock can be selected as the clocking source when only one clock is required.
The PCM3060 has low jitter sensitivity and a high signal-to-noise ratio of 105 dB to provide great audio performance, even in asynchronous mode and for applications or clocks sources with high jitter. Customers can complete their audio system by interfacing the PCM3060 to a DSP such as TI's TMS320C6x(TM) family of DSPs and to a stereo class-D audio power amplifier such as TI's TPA3120. The new device also complements other products from TI's broad audio product portfolio including line drivers, receivers, analog multiplexers, PurePath(TM) digital amplifiers and digital audio processors.
Availability and Packaging
The PCM3060 is available now in a 28-pin TSSOP lead-free package and is priced at $1.95 each in 1,000-piece quantities.
TI offers analog engineers a wide-ranging support infrastructure that includes training and seminars, design tools and utilities, technical documentation, evaluation modules, an online KnowledgeBase, a product information hotline and a comprehensive offering of samples. For more information on TI's complete analog design support, and to download the latest selection guides, visit TI's Analog eLab Design Center.
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