BA3834S Rohm Semiconductor, BA3834S Datasheet

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BA3834S

Manufacturer Part Number
BA3834S
Description
Manufacturer
Rohm Semiconductor
Datasheet

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BA3834S
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The BA3834S and BA3834F are 7-band, band-pass filter ICs that use microprocessor time division to produce serial
output for spectrum analyzer displays. To minimize the number of attached components required and enable compact
and reliable designs, all of the capacitors for the filters are on the chip.
FApplications
CD radio cassette players, mini-component stereo sys-
tems, car stereos
FFeatures
1) Seven band-pass filter elements for spectrum ana-
2) High-speed readout
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
Band-pass filter for spectrum analyzer
BA3834S / BA3834F
Audio ICs
lyzer displays.
(output response time: 5 sec. Typ.).
3) Discharge time constant circuit for each band is on
4) Differential input amplifier rejects common-mode
5) Single 5V power supply.
the chip.
noise.
591

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BA3834S Summary of contents

Page 1

... Band-pass filter for spectrum analyzer BA3834S / BA3834F The BA3834S and BA3834F are 7-band, band-pass filter ICs that use microprocessor time division to produce serial output for spectrum analyzer displays. To minimize the number of attached components required and enable compact and reliable designs, all of the capacitors for the filters are on the chip. ...

Page 2

... Audio ICs FBlock diagram 1 (BA3834S) 592 BA3834S / BA3834F ...

Page 3

... Audio ICs FBlock diagram 2 (BA3834F) BA3834S / BA3834F 593 ...

Page 4

... Audio ICs FElectrical characteristics (unless otherwise noted 25_C, V SEL = 1) 594 BA3834S / BA3834F = 5V 10M , V = *30dBV and CC L AIN ...

Page 5

... Audio ICs FMeasurement circuit (BA3834S) BA3834S / BA3834F 595 ...

Page 6

... Audio ICs FOutput select logic table FTiming chart 596 BA3834S / BA3834F ...

Page 7

... Audio ICs FApplication example (BA3834S) BA3834S / BA3834F 597 ...

Page 8

... ICs and external components. Note, also, that Rohm has not been able to conduct a sufficient study into patent rights. , the REF and R are 1.5V BA3834S / BA3834F for the IC will be 0.75V ...

Page 9

... Therefore, when setting the spectral analyzer light level, take into consideration the points given above and make sure that it does not light by mistake during quiescent periods. Use the chart below as a guide for this, and, if necessary, leave even a larger margin. FElectrical characteristics curves BA3834S / BA3834F 599 ...

Page 10

... Audio ICs FExternal dimensions (Units: mm) 600 BA3834S / BA3834F ...

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