BA5970FP

Optical disc ICs 4-channel BTL driver for CD players and CD-ROMs BA5970FP The BA5970FP is a 4-channel BTL driver developed to drive CD player motors and actuators. The driver input stage contains an operational amplifier, supports a variety of input formats, and allows simple configuration of a filter. FApplications CD players, CD-ROM FFeatures 1) 4-channel BTL driver. 2) Wide dynamic range (4V when PREV CC = 8V, POWVCC = 5V, and RL = 8Ω). 3) Internal thermal shutdown circuit. 4) Driver gain is adjustable with externally connected resistor. 5) Independent power supplies PREVCC, POWVCC (for channels 1 and 2), and POWVCC (for channels 3 and 4), and low voltage operation for a highly efficient drive. 6) Independent mute pins for channels 1 and 2 and channels 3 and 4. 7) Perfect for compact applications with the use of the HSOP28-pin power package. FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) 653 Optical disc ICs FBlock diagram BA5970FP FPin descriptions 654 Optical disc ICs FInput / output circuits BA5970FP 655 Optical disc ICs FElectrical characteristics (unless otherwise noted, Ta = 25_C, PREVCC = 8V, POWVCC1 = 5V, FPOWVCC2 = 8V, BIAS = 2.5V, RL = 8Ω) BA5970FP 656 Optical disc ICs FMeasurement circuit BA5970FP 657 Optical disc ICs FMeasurement circuit switch table (1) Driver block (OPB ! 1, NF ! 1, OPRL ! 1) BA5970FP (2) Pre-stage operational amplifier block (VN1 = VM2 = 0V, RL ! OFF) 658 Optical disc ICs FApplicat...