BA3826 Rohm, BA3826 Datasheet
BA3826
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BA3826 Summary of contents
Page 1
... Band-pass filter for spectrum analyzer BA3826S The BA3826S is a 7-band ( 2), band-pass filter that uses microprocessor time division to output in serial to left and right stereo channels. 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. ...
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... Audio ICs FBlock diagram FElectrical characteristics (unless otherwise noted 25_C 5V, Vee = *5V 10k , and R = 120k ) CC L BA3826S 577 ...
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... Audio ICs FMeasurement circuit FCircuit operation (1) Input switch circuit The BA3826S alternately switches between the left and right stereo channel signals using time division to serial- ize and process the signals. 578 BA3826S ...
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... Accordingly, set the read timing for the DET signal after the longer of the delay times in (a) and (b). (a) For the band-pass filter, a sampling time of at least 5 cycles is required due to the transition rise characteris- tic. BA3826S 579 ...
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... DET. Switching occurs when the control signal reaches 1.4V, and when A, B, and C are all high, output is disabled (GND level). Refer to the table below regarding the out- put switching logic. The recommended output load resistance is 10k . BA3826S ...
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... If you change the circuit constants, check both the static Output switching logic and transient characteristics of the circuit, and allow suffi- cient margin to accommodate variations between both ICs and external components. Note, also, that Rohm has not been able to conduct a sufficient study into patent rights. BA3826S 581 ...
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... If the load resistance is too low, the gain and control range vary slightly. Be aware of this when con- necting the next stage. (5) Coupling capacitors Set the polarity of the input electrolytic coupling capaci- tors after establishing the electrical potential relationship with the connected input. BA3826S ...