Product category:
Analogue and Mixed Signal ICs
News Release from: Renesas Technology Europe | Subject: M61538FP, M61539FP and M61540FP
Edited by the Electronicstalk Editorial
Team on 30 April 2004
Volume controller keeps quiet about
noise
The M61538FP is a novel single-function six-channel electronic volume IC that offers the industry's lowest output noise voltage of 0.85uV RMS.
The M61538FP is a novel single-function six-channel electronic volume IC that offers the industry's lowest output noise voltage of 0.85uV RMS It also offers a very low total harmonic distortion factor of just 0.0012%
This article was originally published on Electronicstalk on 15 Apr 2004 at 8.00am (UK)
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The device is suitable for use in audio products such as home theatre AV amplifiers, DVD players, and mini audio systems.
Also new are the M61539FP, which incorporates a high audio-frequency/low audio-frequency two-band tone control function, and the M61540FP, which incorporates a two-band tone control function and a five-input selector function.
Electronic volume ICs are chips that perform digital control of volume.
Noise voltage is a major factor in determining sound quality.
The new ICs employ a new circuit layout configuration that reduces transistor-level thermal noise, the cause of noise voltage, enabling high-quality sound thanks to a low output noise voltage and low distortion.
The new models also provide the same functions as current products.
The three new models support a single power-supply operating voltage for the first time as well as dual power supplies, achieving a maximum output amplitude of 4.5V RMS.
This enables optimal power supply system design for different systems.
For example, dual power supplies are needed for an AV amplifier handling large amplitude signals, whereas a single power-supply is needed for products such as mini audio systems that do not handle large-amplitude signals.
The devices offer smaller package sizes compared with current Renesas Technology models through the use of fewer pins.
The 24-pin SSOP package used for the M61538FP offers an approximately 64% reduction in mounting area, and the 40-pin QFP package used for the M61539FP and M61540FP offers an approximately 66% reduction.
Samples of the M61538FP and the M61539FP are available now, with mass production scheduled for July and September 2004 respectively.
Samples of the M61540FP will be available from June.
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