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CPC5750 Datasheet(PDF) 1 Page - IXYS Corporation |
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CPC5750 Datasheet(HTML) 1 Page - IXYS Corporation |
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1 / 37 page  PRELIMINARY INTEGRATED CIRCUITS DIVISION DS-CPC5750-Rev F PRELIMINARY 1 Features • -law and A-law ITU G.711 Companding Codec • Operates on +3.3V Power • Differential Analog Signal Paths • Programmable Transmit and Receive Gain, +/-12dB in 0.1dB increments • Transmit Path 60Hz Rejection Filter • Differential amplifier drives +3.2dBm into 600 • Stable Gain over temperature • PCM and IOM-2 GCI telecommunication interfaces • Short and Long Frame Syncs Supported • Independent Transmit and Receive Programmable Time Slots • Accepts PCLK from 512kHz to 8.192MHz • SPI Serial Interface for control in PCM Mode • Programmable Power Down Mode, I DD = 20A • Analog and Digital Loopback Modes for testing Description The CPC5750 is a voice-band CODEC with pin-selectable PCM or IOM-2 (GCI) digital interfaces. Clock frequencies for the PCM Mode range from 512kHz to 8.192MHz while the GCI interface allows clocking at 2.048MHz and 4.096MHz. While the GCI interface utilizes the integrated data link to read and write the control registers, a four-wire Serial Peripheral Interface (SPI) bus provides register access while in PCM Mode. The CODEC provides the necessary A/D and D/A functions with pin-selectable -law or A-law companding. A low-noise internal reference is used to keep signal gains well controlled over supply and temperature variations. Programmable gain of ±12dB for both transmit and receive allow the CPC5750 to accept differential input signals as large as +8dBm, and to source +3.2dBm differential signals into 600 while operating from a single 3.3V supply. Ordering Information CPC5750 Block Diagram Part Description CPC5750U SSOP-24 Package 50/Tube CPC5750UTR SSOP-24 Package 2000/Reel POR A IN+ A IN- ADC V REF BAND GAP BUF BUF A OUT+ A OUT- ALB DAC DLB FIR Filter Control Register SPI Interface SCLK SDI SDO µ-law/A-law Encoder PCM/IOM-2 Interface Logic FS D TX D RX PCLK SFSEL m-law/A-law Decoder + - + - FIR Filter 0.22 µF Noise Shaper RST V EE MUTE CS VDD V DD CPC5750 Single-Channel Voice Band CODEC |
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