High Definition Audio SoundMAX Codec

GENERAL DESCRIPTION The AD1987 audio codec and SoundMAX® software provides superior HD audio quality that exceeds Vista Premium performance. The AD1987 has eight DACs and four ADCs, three stereo headphone ports, C/LFE swapping, digital and analog PCBeep, and S/PDIF output, making the AD1987 the r

Three-Phase Brushless Motor Driver for VCR Capstan Motors

Overview The LB1987, LB1987D, LB1987M, and LB1987H are optimal capstan motor drivers for use in VCR sets. Functions • Three-phase full-wave current-linear drive • Torque ripple correction circuit (fixed correction ratio) • Current limiter circuit with control characteristics gain switching •

Three-Phase Brushless Motor Driver for VCR Capstan Motors

Overview The LB1987, LB1987D, LB1987M, and LB1987H are optimal capstan motor drivers for use in VCR sets. Functions • Three-phase full-wave current-linear drive • Torque ripple correction circuit (fixed correction ratio) • Current limiter circuit with control characteristics gain switching •

Three-Phase Brushless Motor Driver for VCR Capstan Motors

Overview The LB1987, LB1987D, LB1987M, and LB1987H are optimal capstan motor drivers for use in VCR sets. Functions • Three-phase full-wave current-linear drive • Torque ripple correction circuit (fixed correction ratio) • Current limiter circuit with control characteristics gain switching •

REMOTE CONTROL RECEIVER P MOS LSI

DESCRIPTION The UPD1987C is P MOS IC for decoding the signal from recevier of remote control system for TV etc.