The BL1302A57 S is an A-law monolithic PCM 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. Also included are auto-zero circuitry and a companding coder which samples the filtered signal and encodes it in the companded A-law PCM format. The decode portion consists of an expanding decoder, which reconstructs the By Shanghai Belling Co, Ltd
BL1302A57 's PackagesBL1302A57 's pdf datasheet

BL1302A57 Pinout, Pinouts
BL1302A57 pinout,Pin out
This is one package pinout of BL1302A57,If you need more pinouts please download BL1302A57's pdf datasheet.

BL1302A57 Application circuits
BL1302A57 circuits
This is one application circuit of BL1302A57,If you need more circuits,please download BL1302A57's pdf datasheet.

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