HA12221F Overview
HA12216F/HA12221F series are silicon monolithic bipolar IC providing Dolby B type noise reduction, music sensor, PB equalizer system in one chip. Dolby is a trademark of Dolby Laboratories Licensing Corporation. A license from Dolby Laboratories Licensing Corporation is required for the use of this IC.
HA12221F Key Features
- 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 HA12216F series)
- Available to connect direct with MPU
- These ICs are strong for a cellular phone noise. (18 dB improvement from HA12163)
- Time constant pin for rectifier