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W6810IWG Datasheet(PDF) 2 Page - Winbond |
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W6810IWG Datasheet(HTML) 2 Page - Winbond |
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2 / 37 page  W6810 - 2 - 1. GENERAL DESCRIPTION The W6810 is a general-purpose single channel PCM CODEC with pin-selectable μ-Law or A-Law companding. The device is compliant with the ITU G.712 specification. It operates off of a single +5V power supply and is available in 20-pin PDIP, SOG, SSOP, and TSSOP package options. Functions performed include digitization and reconstruction of voice signals, and band limiting and smoothing filters required for PCM systems. The filters are compliant with ITU G.712 specification. W6810 performance is specified over the industrial temperature range of –40 °C to +85°C. The W6810 includes an on-chip precision voltage reference and an additional power amplifier, capable of driving 300 Ω loads differentially up to a level of 6.3V peak-to-peak. The analog section is fully differential, reducing noise and improving the power supply rejection ratio. The data transfer protocol supports both long-frame and short-frame synchronous communications for PCM applications, and IDL and GCI communications for ISDN applications. W6810 accepts seven master clock rates between 256 kHz and 4.096 MHz, and an on-chip pre-scaler automatically determines the division ratio for the required internal clock. For fast evaluation and prototyping purposes, the W6810DK development kit is available. 2. FEATURES • Single +5V power supply • Typical power dissipation of 25 mW, power-down mode of 0.5 μW • Fully-differential analog circuit design • On-chip precision reference of 1.575 V for a 0 dBm TLP at 600 Ω (775mV RMS) • Push-pull power amplifiers with external gain adjustment with 300 Ω load capability • Seven master clock rates of 256 kHz to 4.096 MHz • Pin-selectable μ-Law and A-Law companding (compliant with ITU G.711) • CODEC A/D and D/A filtering compliant with ITU G.712 • Industrial temperature range (–40 °C to +85 °C) • Four packages: 20-pin PDIP, SOG, SSOP, and TSSOP • Pb-Free / RoHS package options available ApplIcations • Digital Telephone Systems • Central Office Equipment (Gateways, Switches, Routers) • PBX Systems (Gateways, Switches) • PABX/SOHO Systems • Local Loop card • SOHO Routers • VoIP Terminals • Enterprise Phones • ISDN Terminals • Analog line cards • Digital Voice Recorders |
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