Band-pass filter for spectrum analyzer
Audio ICs
Band-pass filter for spectrum analyzer
BA3835S / BA3835F
The BA3835S and BA3835F are 5-band, band-pass filter...
Description
Audio ICs
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. FApplications CD radio cassette players, mini-component stereo systems, car stereos FFeatures 1) Five band-pass filter elements for spectrum analyzer displays. 2) High-speed readout (output response time : 5µsec. Typ.).
3) Discharge time constant circuit for each band is on the chip. 4) Differential input amplifier rejects common-mode noise. 5) Single 5V power supply.
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
601
Audio ICs
FBlock diagram 1 (BA3835S)
BA3835S / BA3835F
602
Audio ICs
FBlock diagram 2 (BA3835F)
BA3835S / BA3835F
603
Audio ICs
BA3835S / BA3835F
FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 5V, RL = 10MΩ, VAIN = *30dBV and SEL = 1)
604
Audio ICs
FMeasurement circuit (BA3835S)
BA3835S / BA3835F
605
Audio ICs
FOutput select logic table
BA3835S / BA3835F
FTiming chart
606
Audio ICs
FApplication example (BA3835S)
BA3835S / BA3835F
607
Audio ICs
FOperation notes (1) Frequency characteristics The frequency characteristics of this IC are determined by the resistor connected between the RREF terminal and GND. For the sp...
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