Band-pass filter for spectral analyzers
Audio ICs
Band-pass filter for spectral analyzers
BA3830S
The BA3830S is a 6)1 band band-pass filter for spectral analy...
Description
Audio ICs
Band-pass filter for spectral analyzers
BA3830S
The BA3830S is a 6)1 band band-pass filter for spectral analyzer displays with internal recording indicator output. All of the capacitors comprising the filter are internal capacitors, making it possible to significantly reduce the number of attached components. This enables configuration of compact sets with a high level of reliability. FApplications CD radio cassette players, mini-components, car stereos
FFeatures 1) Six internal band-pass filters for spectral analyzers 2) Internal input / output for recording indicators FAbsolute maximum ratings (Ta = 25_C)
3) Internal capacitors reduce the number of attachments.
FRecommended operating conditions (Ta = 25_C)
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Audio ICs
FBlock diagram
BA3830S
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Audio ICs
FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 5V, RL = 10MΩ, Rφ1 = 270kΩ, Rφ2 = 270kΩ)
BA3830S
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Audio ICs
FMeasurement circuit
BA3830S
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Audio ICs
FCircuit operation (1) LINE and REC input circuits The LINE and REC input circuits are configured as differential amplifiers, and the gain can be set to any desired value using an external resistor. The input impedance is determined by the external resistor.
BA3830S
(2) Bias circuit A bias voltage of VCC / 2 is applied to each of the circuits. Since the output stage uses a push-pull configuration, a stable bias source can be obtained.
(3) BPF circuit This is a circuit that selects the required frequency component from the...
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