HA12155NT Overview
HA12155NT/HA12157NT is silicon monolithic bipolar IC providing Dolby noise reduction system , electrical volume system, REC equalizer system and level meter system in one chip. Functions REC equalizer Dolby B/C NR Electronic volume Level Meter × 2 channel × 2 channel × 2 channel × 2 channel.
HA12155NT Key Features
- Inductor less REC equalizer is adjustable of its characteristics by external resistor
- 3 type of input selection is available (one is by way of electrical volume)
- Separate input selection SW and REC/PB SW
- Dolby noise reduction with dubbing cassette decks (Unprocessed signal output available from recording out terminals duri
- Log-pressed level meter output is range from 0 V to 5 V (Usable as music search switchable gain of 0 dB and 20 dB respec
- NR-ON/OFF, Dolby B/C, MPX ON/OFF fully electronic control switching built-in (Controllable from micro-controller directl
- Reduction of number of pin by transfered serial data to electronic volume control switching and another control switchin
- Low external parts count
- Dolby is a trademark of Dolby Laboratories Licensing Corporation. A license from Dolby Laboratories Licensing Corporatio
- REC EQ