Tone, Balance, Volume Control using Quad XDCP channel stereo circ

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Tone, Balance, Volume Control using Quad XDCP channel stereo circ

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Imagine possibilities being able integrate full audio tone, balance, volume control into your multimedia computer product, without having resort manual knobs. Naturally could that with bunch DACs running under microprocessor control, what happens audio amplifiers sound generators come alive before processor chance reload preset values into DACs. could blasted before initialization sequence complete. Fortunately, Xicor solved this problem with X9241 XDCPs. These devices store last position control automatically reload these values into registers upon power-up. Shown figure Xicor X9241U quad 50KW XDCP used control treble, bass, balance, volume parameters LM1035 stereo audio processor. Unlike conventional DAC, Xicor devices reload last value, preset value, into tone/balance volume registers upon power-up, predictable sound level conditions without danger over-driving power amplifier.
Tone, Balance, Volume Control using Quad XDCP
channel stereo circuit shown provides approximately ±15dB bass treble boost cut) along with 70dB balance volume control range with values shown (consult LM1035 data sheet full details other configurations). It's good idea X9241 from analog power supply order minimize noise picked-up from digital circuits. circuit shown uses current source from within LM1035 provide power X9241. would nice internal zener voltage regulator LM1035, rated typically 5.4V maximum supply voltage X9241 5.5V. external shunt regulator (VR1) used maintain supply voltage input X9241 nominal full functionality performance LM1035 impaired using XDCPs. audio processing possibilities using combo many varied; just remember good grounding shielding techniques minimize noise.
June, 2000
www.xicor.com
Figure X9241 Dual Tone/Balance/Volume Controller
June, 2000
www.xicor.com

Tone, Balance, Volume Control using Quad XDCP channel stereo circ

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