HA12228F Datasheet | Hitachi Semiconductor

Description HA12228F/HA12229F are silicon monolithic bipolar IC providing Dolby noise reduction system- , music sensor, PB equalizer system in one chip. Notes: 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. 2. HA12229F is not built-in Dolby B-NR. Functions - PB equalizer - Music sensor - Dolby B-NR (Only HA12228F) - Line mute SW × 2 channel × 1 channel × 2 channel × 2 channel Features - Different type of PB equalizer characteristics selection (120 µs/70 µs) is available with fully electronic control switching built-in. - Easy interface with the PB head. (The PB-EQ resistance self-containing) - Changeable to Forward, Reverse-mode for PB head with fully electronic control switching built-in. - Available to change music sensing level by external resistor. - Available to change response of music sensor by external capacitor. - Music sensing level, built-in switch to change a band (MSGV). - NR ON/OFF fully electronic control switching built-in. (Only HA12228F) - Line mute control switching built-in. - Available to connect direct with MPU. - These ICs are strong for a cellular phone noise. HA12228F/HA12229F Ordering Information Operating Voltage Product HA12228F HA12229F Note: 1. These ICs are designed to operate on single supply. Min 6.5 Max 12 Unit V Standard Level Product HA12228F HA12229F Package FP-40B PB-OUT Level 300 m Vrms Function Product HA12228F HA12229F PB-EQ ❍ ❍ Music Sensor ❍ ❍ Mute ❍ ❍ Dolby B-NR ❍ × Rev.2, Dec. 2000, page 2 of 51 HA12228F/HA12229F Pin Description , Equivalent Circuit (VCC = 9 V single supply, Ta = 25°C, No Signal, The value in the table shows typical value.) Pin No. 13 Terminal Name MSI Note V = VCC/2 Equivalent Circuit Description MS input - 1 V 100 k VCC/2 4 27 23 - 2 TAI(L) TAI(R) DET(R) V = 2.5 V Tape input Time constant pin for NR...