5-band stereo equalizer with volume and balance control on the CXA1352AS chip. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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5-band stereo equalizer with volume and balance control on the CXA1352AS chip. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Tone, volume controls

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We consider an equalizer circuit with 5 bands of adjustment, as well as with adjustment of the signal level and balance on the CXA1352AS chip from Sony. Adjustments occur simultaneously on two channels, which makes this circuit convenient for embedding in some simple stereo amplifier.

The main parameters of the scheme are as follows:

Supply voltage, V. . . . . . . . . 4…10
Consumed current, mA. . . . . . . . . . eight
The number of equalizer bands. . . . . . 5
Adjustment range, dB. . . . . . . . 12…+14
Volume control range, dB. . . 94…0
Balance adjustment range, dB. . . . 66…0
Harmonic coefficient, % . . . . . . . . 0,25
Signal-to-noise ratio, dB. . . . . . . . 93

Diagram:

5-band stereo equalizer with volume and balance control on the CXA1352AS chip. Stereo equalizer circuit

Resistor R1 adjusts the signal level, R2 - balance, resistors R3-R7 amplify / attenuate the selected frequency.

Equipment

Designation in the diagram	Nominal
C1	4,7 uFx10V
C2	4,7 uFx10V
C3	2,2 uFx10V
C4	2,2 uFx10V
C5	100 uFx10V
C6	4,7 uFx10V
C7	4,7 uFx10V
C8	4,7 uFx10V
R1	100 kOhm (variable)
R2	100 kOhm (variable)
R3	100 kOhm (variable)
R4	100 kOhm (variable)
R5	100 kOhm (variable)
R6	100 kOhm (variable)
R7	100 kOhm (variable)
R8	160 kΩ
FROM 1	CXA1352AS

Publication: radiokot.ru

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