Winbond Electronics Corp. America (San Jose, CA) introduced two families of ringing subscriber line interface circuits (RSLICs), the W671300 Series and the W671500 Series, which are designed to work together with Winbond's existing A-Law/micron-Law CODEC portfolio of devices to terminate analog POTS lines.
Together the CODEC/RSLIC chipset provides a cost-effective solution supporting the complete BORSCHT feature requirements for short- and medium-loop-length systems. The chipset is suitable for emerging customer premises equipment applications such as VoIP gateways, VoIP-enabled DSL or cable modems, as well as analog telephone adapters.
The RSLIC family can operate in both 5 V (W671500 Series) and 3.3 V (W671300 Series) environments. Each family supports several product grades offering customers the flexibility to match performance to individual system requirements. Each device, for example, supports on-chip ringing, ranging from 100 V in the high-performance devices down to 75 V in the most cost-sensitive solutions.
The RSLICs are currently sampling, with volume production slated for next month. They are offered in PLCC and small-footprint QFN package options. The voice CODECs are already in production, with package options of PDIP, SOP, SSOP and TSSOP available. A low-cost CODEC/RSLIC chipset evaluation system is also available.
