KA8504 Description
If the line current is large, this pin dissipates excess power (current) AC signal reference voltage terminal. When the mute pin is “H” level, this pin bee active. When this pin is 'H’level, speech circuit is muted and the DTMF input is enabled.
KA8504 Key Features
- Low line current operation
- Mute function
- DTMF signal interface
- Easy gain control
- 40°C ~ + 85°C