HA12215 Datasheet | Hitachi Semiconductor

Description HA12215F is silicon monolithic bipolar IC providing Dolby noise reduction system- , music sensor system, REC equalizer system and each electronic control switch in one chip. Note: 1. Dolby is a trademark of Dolby Laboratories Licensing Corporation. A license from Dolby Laboratories Licensing Corporation is required for the use of this IC. Functions - Dolby B-NR - Music sensor - Pass amp. × 2 channel × 1 channel × 2 channel - REC equalizer × 2 channel - Each electronic control switch to change REC equalizer, bias, etc. Features - REC equalizer is very small number of external parts and have 6 types of frequency characteristics built-in. - 2 types of input for PB, 1 type of input for REC. - 70µ - PB equalizer changing system built-in. - Dolby NR with dubbing double cassette decks. Unprocessed signal output available from recording out terminals during PB mode. - Provide stable music sensor system, available to design music sensing time and level. - Controllable from direct micro-puter output. - Bias oscillator control switch built-in. - NR ON / OFF and REC / PB fully electronic control switching built-in. - Normal-speed / high-speed, Normal / Crom / Metal and PB equalizer fully electronic control switching built-in. - Available to reduce substrate-area because of high integration and small external parts. HA12215F Ordering Information Operating Voltage Product HA12215F VCC (V) +6.0 to +7.5 VEE (V) - 7.5 to - 6.0 Note | VCC + VEE | < 1.0 V Standard Level Product HA12215F Package FP-56 PB-OUT Level 580 m Vrms REC-OUT Level 300 m Vrms Dolby Level 300 m Vrms Function Music Sensor ❍ REC / PB Selection ❍ Product HA12215F Dolby B-NR ❍ REC-EQ ❍ Pass Amp. ❍ ALC ❍ Note: Depending on the employed REC / PB head and test tape characteristics, there is a rare case that the REC-EQ characteristics of this LSI can not be matched to the required characteristics because of built-in resistors which determined the REC-EQ parameters in this case, please inquire the...