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GENERAL DESCRIPTION The ML7029 is a single channel ADPCM CODEC IC which performs mutual transcoding between the analog voice band signal and 32 kbps ADPCM serial data. FEATURES • Single 3 V Power Supply Operation (VDD: 2.7 to 3.6 V) • ADPCM Algorithm: ITU-T G.726 (32 kbps, 24 kbps, 16 kbps) • Full-Duplex Transmit/Receive Operation • Transmit/Receive Synchronous Mode Only • PCM Data Format: µ-law • Serial PCM/ADPCM Transmission Data Rate: 64 kbps to 2048 kbps (when SYNC = 8 kHz) • Low Power Consumption Operating Mode: 18 mW Typ. (VDD = 3.0 V, SYNC = 8 kHz) Power-Down Mode: 0.03 mW Typ. (VDD = 3.0 V, SYNC = 8 kHz) • Sampling Frequency: 6 kHz to 21 kHz selectable (However, there are limitations to 16 kHz or higher frequencies) • Master Clock Frequency: Sampling frequency × 1296 When SYNC = 8 kHz: 10.368 MHz • Transmit/Receive Mute, Transmit/Receive Programmable Gain Control • Side Tone Path with Programmable Attenuation (8-Step Level Adjustment) • Serial MCU Interface Control • Package: 30-pin plastic SSOP (SSOP30-P-56-0.65-K) (ML7029)
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