Audio DAC integrates stereo line drivers.September 28, 2010 -
Supplied as 14-pin SOIC, CS4354 uses on-chip charge pump to generate negative supply and outputs ground-centered, 2 Vrms filtered line level signal from 5 V supply. This optimizes low-frequency response and audio quality while eliminating need for DC blocking capacitors, mute and pop suppression circuits, and high-voltage power supply. Supporting 24-bit conversion and automatic detection of audio sampling rates to 192 kHz, DAC provides 101 dB dynamic range and -86 dB THD+N rating.
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Original Press release
Cirrus Logic, Inc.
4210 S. Industrial Dr.
Austin, TX, 78744
USA
Cirrus Logic Digital-to-Analog Converter Focuses on Lowering System Costs, Reducing Components in Consumer Home Audio Applications
CS4354 Features On-Chip 2 VRMS Line Driver from 5-Volt Power Supply and Improves Audio Quality
AUSTIN, Texas - Cirrus Logic Inc., (Nasdaq: CRUS) has introduced the CS4354, its lowest-cost 24-bit digital-to-analog converter (DAC) with integrated stereo line drivers. Targeting consumer home audio applications, such as video game consoles, Blu-ray® Disc and DVD systems, TVs, set-top boxes and digital media players, the CS4354 is Cirrus Logic's fourth-generation audio DAC with ground-centered 2VRMS line drivers. The CS4354 marks significant progress in simplifying the design of analog output circuitry by reducing the need for multiple system components, which saves system cost and board space.
The CS4354 utilizes an on-chip charge pump to generate a negative supply and outputs a ground-centered, 2VRMS filtered line level signal from a single 5 V supply. This architecture provides improved low-frequency response and audio quality and offers significant savings in external component costs by eliminating DC blocking capacitors, mute and pop suppression circuits and the need for an expensive high voltage power supply.
"The CS4354 has 40 percent fewer pins and requires six fewer external capacitors than our third generation DAC in this product category," said Carl Alberty, director of Marketing, Cirrus Logic's Mixed Signal Audio Division. "We are excited to be delivering smaller and more cost effective DAC solutions to our customers without sacrificing the performance they have come to expect from Cirrus audio products."
The CS4354 supports 24-bit conversion and automatic detection of audio sampling rates up to 192 kHz. Based on a fifth-order multibit Delta Sigma converter architecture with low latency digital filtering, the CS4354 provides 101 dB dynamic range and -86 dB THD+N with excellent out-of-band noise performance. The device is powered from a single, +5V supply, supports direct interface to logic levels from +1.5V to +5V and consumes only 50mW of power during operation. It also features a power-on-reset circuit to further simplify system design and combines with the ground centered outputs and on-chip mute to provide a high performance, affordable audio DAC solution to designers.
Pricing and Availability
The CS4354 is currently available in a 14-pin SOIC package, priced at $0.81 in quantities of 10,000.
Cirrus Logic Inc.
Cirrus Logic develops high-precision, analog, digital and mixed-signal integrated circuits for a broad range of innovative customers. Building on its diverse analog, digital and signal-processing patent portfolio, Cirrus Logic delivers highly optimized products for a variety of audio and energy-related applications. The company operates from headquarters in Austin, Texas, with offices in Tucson, Ariz., Europe, Japan and Asia.
Cirrus Logic and Cirrus are trademarks of Cirrus Logic Inc. All other product names noted herein may be trademarks of their respective holders.
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