GENERAL DESCRIPTION

The W681310 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 from a single +3V power supply and is available in 20-pin 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. W681310 performance is specified over the industrial temperature range of –40°C to +85°C.

FEATURES

? Single +3V power supply (2.7V to 5.25V)

? Typical power dissipation of 10 mW, power-down mode of 0.5 μW

? Fully-differential analog circuit design

? On-chip precision reference of 0.886 V for a -5 dBm TLP at 600 Ω

? Push-pull power amplifiers with external gain adjustment with 300 Ωload capability

? Eight master clock rates of 256 kHz to 4.800 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)

? Packages: 20-pin SOG (SOP), SSOP and TSSOP

? Pb-Free package options available