HA12209F Datasheet | Hitachi Semiconductor

Description HA12209F is silicon monolithic bipolar IC providing Dolby noise reduction system- , music sensor system, REC equalizer system and each electronic control switch in one chip. Functions - Dolby B-NR - REC equalizer - Music sensor × 2 channel × 2 channel × 1 channel - Each electronic control switch to change REC equalizer, bias, etc. Features - REC equalizer is very small number of external parts and have 4 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, TYPE I/TYPE II and PB equalizer fully electronic control switching built-in. - Available to reduce substrate-area because of high integration and small external parts. - Dolby is a trademark of Dolby Laboratories Licensing Corporation. A license from Dolby Laboratories Licensing Corporation is required for the use of this IC. Ordering Information Standard Level Operating Voltage Product HA12209F Package FP-56 PB-OUT Level 580m Vrms REC-OUT Level Dolby Level 300m Vrms 300m Vrms Min 10V Max 15V Function Product HA12209F Dolby B-NR ❍ REC-EQ ❍ Music Sensor ❍ REC/PB Selection ❍ 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 responsible agent because the adjustment of built-in resistor is necessary. Rev.2, Jun. 1999, page 2 of 49 Pin Description , Equivalent...