HV461 Description
The HV461FG is a highly integrated ring generator controller IC, designed to work with a patented four-quadrant inverter topology, with synchronous rectifiers on the secondary side to achieve higher efficiencies. The inverter delivers the desired ring voltage from a standard -48V Tele power supply. The HV461 consists of a sine wave synthesizer that can provide eight different ring frequencies for universal...
HV461 Key Features
- 3.3V operation, logic inputs 3.3V & 5.0V patible
- Digital control of ring frequency, amplitude, and offset
- Control via 8-bit bus or via individual inputs
- External ring frequency input
- Low distortion sine wave synthesizer
- AC-only, AC+DC, or DC-only ringer output
- Adjustable over-current protection
- Internal precision voltage references
- Power-on reset and undervoltage lockout for hotswap capability
- Sync output with adjustable lead time for synchronizing ringing relays