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BL1302A57 - Monolithic serial interface compiler encoder / filter

Description

conversion and a serial PCM interface.

The device is fabricated using the advanced double-poly nwell CMOS process.

It is pin compatible with TP3057.

Features

  • Complete CODEC and filtering system (COMBO) including: --- Transmit high-pass and low-pass filtering --- Receive low-pass filter with sinx/x correction --- Active RC noise filters --- A-law compatible COder and DECoder --- Internal precision voltage reference --- Serial I/O interface --- Internal auto-zero circuitry.
  • 16 pin DIP or SOP.
  • Designed for ITU.

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Datasheet Details

Part number BL1302A57
Manufacturer SHANGHAI BELLING
File Size 734.39 KB
Description Monolithic serial interface compiler encoder / filter
Datasheet download datasheet BL1302A57 Datasheet

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Full PDF Text Transcription

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BL1302A57/S General Description The BL1302A57/S is an A-law monolithic PCM Pin Assignment CODEC/filter which has the A/D and D/A conversion and a serial PCM interface. The device is fabricated using the advanced double-poly nwell CMOS process. It is pin compatible with TP3057. The encode portion of each device consists of an input gain adjust amplifier, an active RC pre-filter which eliminates very high frequency noise prior to entering a switched-capacitor band-pass filter that rejects signals below 200 Hz and above 3400 Hz.
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