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ZXCD1000EQ16 Datasheet

  • ZXCD1000EQ16

  • HIGH FIDELITY CLASS D AUDIO AMPLIFIER SOLUTION

  • 16頁

  • ZETEX

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ZXCD1000
HIGH FIDELITY CLASS D AUDIO AMPLIFIER SOLUTION
DESCRIPTION
The ZXCD1000 provides complete control and
modulation functions at the heart of a high efficiency
high performance Class D switching audio amplifier
solution. In combination with Zetex HDMOS MOSFET
devices, the ZXCD1000 provides a high performance
audio amplifier with all the inherent benefits of Class D.
The ZXCD1000 solution uses proprietary circuit design
to realise the true benefits of Class D without the
traditional drawback of poor distortion performance.
The combination of circuit design, magnetic
component choice and layout are essential to realising
these benefits.
The ZXCD1000 reference designs give output powers
up to 100W rms with typical open loop (no feedback)
distortion of less than 0.2% THD + N over the entire
audio frequency range at 90% full output power. This
gives an extremely linear system. The addition of a
minimum amount of feedback (10dB) further reduces
distortion figures to give < 0.1 % THD + N typical at
1kHz.
From an acoustic point of view, even more important
than the figures above, is that the residual distortion is
almost totally free of any crossover artifacts. This
allows the ZXCD1000 to be used in true hi-fi
applications. This lack of crossover distortion, sets the
ZXCD1000 solutions quite apart from most other
presently available low cost solutions, which in general
suffer from severe crossover distortion problems.
FEATURES
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>90% efficiency
4 / 8
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drive capability
Noise Floor -115dB for solution
Flat response 20Hz - 20kHz
High gate drive capability ( 2200pF)
Very low THD + N 0.2% typical full 90% power, full
band ( for the solution)
Distortion v Power
8鈩?open loop at 1kHz.
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Complete absence of crossover artifacts
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OSC output available for sync in multi-channel
applications
THD + N (%)
10W
1W
5W
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Available in a 16 pin exposed pad QSOP package
Output Power
APPLICATIONS
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DVD Players
Automotive audio systems
Home Theatre
Multimedia
Wireless speakers
Portable audio
Sub woofer systems
Public Address system
The plot shows Distortion v Power into an 8鈩?load at
1kHz. This plot clearly demonstrates the unequalled
performance of the Zetex solution. Typical distortion of
0.05% at 1W can be seen with better than 0.15% at 10W.
Truly world class performance.
ISSUE 2 - APRIL 2002
1

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