BA3888S

Audio ICs High-definition sound processor BA3888S The BA3888S is a sound processor IC that performs phase and harmonic compensation on audio signals to accurately reproduce the “rise” section of audio signals that determines the characteristics of the sound, and thus reproduce the original recording as naturally as possible. FApplications VCRs, tape recorders and video equipped television FFeatures 1) Corrects distortion in the rising section of audio signals that results from miss-matched speakers and amplifiers, and reproduces the original sound faithfully. 2) To allow application with all types of speakers and sources, the clarity can be adjusted using DC control. FAbsolute maximum ratings (Ta = 25_C) 3) DC control provided for selection of either processor mode or bypass mode. 4) Bass boost can be set in the range 0dB to 9dB (Typ.) using external components. 5) A noise gate circuit naturally cuts hiss at low volume. FRecommended operating conditions (Ta = 25_C) 437 Audio ICs FBlock diagram BA3888S FElectrical characteristics(unless otherwise noted, Ta = 25_C, VCC = 12V, fIN = 1kHz, VIN = 10dBV, Rg = 600Ω, F RL = 100kΩ and VCTL = 2.5V and Vref = 5V) 438 Audio ICs FMeasurement circuit BA3888S 439 Audio ICs FCircuit operation The BA3888S high-definition sound processor system IC treats the amplifier and speakers as a total audio system, and performs signal processing at the amplifier input stage to accurately reproduce the rise sections of audio signals that dete...