BA3835F Rohm, BA3835F Datasheet

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BA3835F

Manufacturer Part Number
BA3835F
Description
Band-pass filter for spectrum analyzer
Manufacturer
Rohm
Datasheet

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Part Number:
BA3835FE2
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ROHM
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The BA3835S and BA3835F are 5-band, band-pass filter ICs that use microprocessor time division to produce serial
output for spectrum analyzer displays. To minimize the number of external 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) Five band-pass filter elements for spectrum analyzer
2) High-speed readout
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
Band-pass filter for spectrum analyzer
BA3835S / BA3835F
Audio ICs
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.
601

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BA3835F Summary of contents

Page 1

... Band-pass filter for spectrum analyzer BA3835S / BA3835F The BA3835S and BA3835F are 5-band, band-pass filter ICs that use microprocessor time division to produce serial output for spectrum analyzer displays. To minimize the number of external 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 (BA3835S) 602 BA3835S / BA3835F ...

Page 3

... Audio ICs FBlock diagram 2 (BA3835F) BA3835S / BA3835F 603 ...

Page 4

... Audio ICs FElectrical characteristics (unless otherwise noted 25_C, V SEL = 1) 604 BA3835S / BA3835F = *30dBV and = 5V 10M , AIN ...

Page 5

... Audio ICs FMeasurement circuit (BA3835S) BA3835S / BA3835F 605 ...

Page 6

... Audio ICs FOutput select logic table FTiming chart 606 BA3835S / BA3835F ...

Page 7

... Audio ICs FApplication example (BA3835S) BA3835S / BA3835F 607 ...

Page 8

... ICs and external components. Note, also, that Rohm has not been able to conduct a sufficient study into patent rights. is given the rep- ref are 1.5V, 20k , 2 BA3835S / BA3835F R < 30k for the IC will 2 V < 0.75V 2 ...

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 BA3835S / BA3835F 609 ...

Page 10

... Audio ICs FExternal dimensions (Units: mm) 610 BA3835S / BA3835F ...

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