Le9500
General Purpose Ringing SLIC
Not allowed for new designs.
Use LE9541 instead.
Overview
| The VoiceEdge™ Le9500 offers high performance, voice over broadband SLIC devices with universal differential ringing and codec interfaces optimized for short-loop, power-sensitive applications. Capable of ringing voltages of up to 75 V (Le9500A), 85 V (Le9500B), 100 V (Le9500C), or 145 V (Le9500D) SLIC device provides complete functionality required for interfacing to a subscriber loop, and maintain ultra low power dissipation. |
Features & Benefits
- Differential ringing and codec interface
- Single-ended application also supported
- On-board ringing generation
- 15 to 70 Hz ring frequency supported
- Three ringing options:
- Sine wave input - sine wave output
- PWM input - sine wave output
- Square wave input - trapezoidal output
- Flexible power supply options:
- VBAT2for active talking
- VBAT1for ringing, scan, and so on
- 3.3 V for VCC
- Battery switch to minimize off-hook power
- Eight operating states:
- Scan
- Forward and reverse battery active
- Forward and reverse battery on-hook transmission
- Ground start
- Ring
- Disconnect
- Ultra-low on-hook power:
- 29 mW scan state
- 38 mW active state
- Loop start, ring trip, and ground start detection
- Fixed off hook threshold with hysteresis
- Fixed ground start threshold with hysteresis
- Fixed ring-trip threshold as a function of battery voltage
- Software-controllable dual-current limit option
- 25 mA or 40 mA via ground or open control input
- UL1950 Compatible
- When not in ringing, |VTIP| and |VRING| are clamped to be less than 56.5 V
- Thermal shutdown protection with hysteresis
- 28-pin PLCC package
- HV7 Technology
