Le9531
Ringing Subscriber Line Interface Circuit
Product is discontinued and not allowed for new designs.
Overview
| The Le9531 Ringing SLIC device is a single-channel device optimized to provide battery feed, ringing, and supervision on voice loops found in short-loop VoIP applications. This device is functionally equivalent of Le9530 one channel. |
Features & Benefits
- Single Channel High Voltage Ringing SLIC
- Functionally Equivalent of Le9530 One Channel
- Pin-to-pin compatible to Le9530 channel 2 in 48-pin eTQFP package.
- Two Power Supplies
- Single user adjusted battery input
- 3.3 V for VCC
- High Voltage Design
- Meets Comcast ringing requirements without clipping distortion
- Robust solution with no damage during extended ringing cycles or switching the ringer on and off
- Allows use of 50 Ω protection resistors and lower cost, lower current rated protectors
- Two Grades
- Up to -145 V ringing battery Le9531D
- Up to -100 V ringing battery Le9531C
- Eight Operating States
- Scan state for minimal power dissipation
- Active Forward 25 mA DC Current Limit (Default Power Up Mode)
- Active Reverse 25 mA DC Current Limit
- Active Forward 40 mA DC Current Limit
- Active Reverse 40 mA DC Current Limit
- Tip Open Ground Start
- Ringing
- Disconnect
- Differential Ringing Inputs for Optimized Interface to BCM SoC Devices
- Allows to accept driving signals from voice outputs as well as from PWM outputs
- Ultra-Low On-Hook Power
- Loop Start, Ring Trip, and Ground Start Detections
- Loop closure detection with hysteresis to minimize dial pulse distortion
- Thermal Shutdown Protection with Hysteresis
- Test Load Switch
- Supports integrated test algorithms
