The LE9530DETC Dual Ringing SLIC device is a dual-channel device optimized to provide battery feed, ringing, and supervision on voice loops found in short-loop VoIP applications. This device is optimized to interface to the Broadcom BCM3378/3380/3382 and BCM6816 devices, or a similar codec. The LE9530DETC device operates independently from a single, user-adjusted battery and a +3.3 V VCC per channel. Each channel provides forward and reverse battery feed, voice transmission, power ringing, an ultra low-power scan state, ground start (Tip open), and a disconnect state. A test load switch is also included to support integrated test algorithms.
Feature
- Dual Architecture
- Two fully independent integrated SLIC channel
- No impulse noise crosstalk in any operation states to the listening channel in forward or reverse active states
- Two Power Supplies
- Single user adjusted battery input per channel
- 3.3 V for VCC
- High Voltage Design
- Meets Comcast Ringing requirements without clippingdistortion
- 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 Le9530D
- Up to -100 V ringing battery Le9530C
- Channel Independent Eight Operating States
- Scan state for minimal power dissipation
- Active Forward Battery 25mA DC Current Limit
- Active Reverse Battery 25mA DC Current Limit
- Active Forward Battery 40mA DC Current Limit
- Active Reverse Battery 40mA DC Current Limit
- Tip Open Ground Start
- Ringing
- Disconnect (Default Power Up Mode)
- Per Channel Ringing Inputs for Optimized Interface to BCM SoC Devices
- Allows to accept driving signals from per channel 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
Applications
- Interface to Broadcom BCM3378/3380E Cable Modem and BCM6816 GPON
- VoCable Modem
- VoDSL (Voice-over-DSL)
- FTTH (Fiber-to-the-Home), GPON, BPON
- VoEthernet (Voice-over-Ethernet)
