Product category:
Analogue and Mixed Signal ICs
News Release from: Cirrus Logic | Subject: CS2XXX clocking ICs
Edited by the Electronicstalk Editorial
Team on 09 October 2007
Clocking ICs reduce component numbers
The CS2000 offers both a clock generator feature and clock cleanup in a single IC, reducing the number of components and board space required in audio systems.
Cirrus Logic has released the CS2XXX family of clocking IC market with the introduction of the products Focusing on audio applications such as A/V receivers, mixing consoles, multitrack recorders, digital recorders and set-top boxes, these new ICs, which include the CS2000, CS2100, CS2200 and CS2300, give manufacturers a solution for managing the complicated task of ensuring clean clocks within audio system designs
This article was originally published on Electronicstalk on 22 Sep 2005 at 8.00am (UK)
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Precise clocking solutions are essential in electronics applications because they are used to synchronise the components used in professional and consumer audio equipment and directly affect audio quality.
They are typically passive or active semiconductor components in an electrical circuit that provide a timing pulse for other components within that system.
Currently, many applications require multiple clocking components to manage a variety of incoming audio signals.
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The CS2000 offers both a clock generator feature and clock cleanup in a single IC.
This integration reduces the number of components and board space required in audio systems.
The ICs' ability to significantly reduce jitter (noise) compared to current industry solutions makes them ideal for the pro audio and high-end consumer market, as well as mainstream consumer audio/video applications.
A Delta-Sigma fractional-N analogue PLL frequency synthesizer is used to generate a low-jitter output clock relative to a reference clock.
A Digital PLL can then be used to generate the multiplication factor for the analogue PLL.
It offers an 8 to 75MHz reference frequency, a 6 to 75MHz output frequency, a 50Hz to 30MHz input synch clock and a single 3.3V supply.
The CS2000 features frequency synthesis and clock generation from a stable reference clock, as well as generation of a low-jitter clock relative to an external noisy synchronisation clock, at frequencies as low as 50Hz.
The CS2100 features clock multiplication and jitter reduction and is a subset of the CS2000.
The CS2200 offers a clock generation capability and is a subset of the CS2000.
The CS2300 uses an internal LCO instead of an external crystal or reference clock for performing clocking multiplication and jitter reduction.
Cirrus Logic also provides a software Configuration Wizard in conjunction with development hardware which is ideal for development and prototyping of all the solutions.
The development tools also provide a means of programming the OTP for customer prototyping.
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