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MC14LC5480

5 V PCM Codec-Filter

TheMC14LC5480isageneralpurposeperchannelPCMCodec–FilterwithpinselectableMu–LaworA–Lawcompanding,andisofferedin20–pinDIP,SOG,andSSOPpackages.ThisdeviceperformsthevoicedigitizationandreconstructionaswellasthebandlimitingandsmoothingrequiredforPCMsystems.

MC14LC5480

5V PCM Codec-Filter; \n\t?Pin for Pin Replacement for the MC145480\n\t?Single 5 V Power Supply\n\t?Typical Power Dissipation of 15 mW, Power-Down of 0.01 mW\n\t?Fully-Differential Analog Circuit Design for Lowest Noise\n\t?Transmit Band-Pass and Receive Low-Pass Filters On-Chip\n\t?Active R-C Pre-Filtering and Post-Filtering\n\t?Mu-Law and A-Law Companding by Pin Selection\n\t?On-Chip Precision Reference Voltage (1.575 V)\n\t?Push-Pull 300 ohm Power Drivers with External Gain Adjust\n\n  \n \n  

Overview The MC14LC5480 is a general purpose per channel PCM Codec-Filter with pin selectable Mu-Law or A-Law companding, and is offered in 20-pin DIP, SOIC, SSOP, and TSSOP packages. This device performs the voice digitization and reconstruction as well as the band limiting and smoothing required for PCM systems. This device is designed to operate in both synchronous and asynchronous applications and contains an on-chip precision reference voltage.This device has an input operational amplifier whose output is the input to the encoder section. The encoder section immediately low-pass filters the analog signal with an active R-C filter to eliminate very high frequency noise from being modulated down to the passband by the switched capacitor filter. From the active R-C filter, the analog signal is converted to a differential signal. From this point, all analog signal processing is done differentially. This allows processing of an analog signal that is twice the amplitude allowed by a single-ended design, which reduces the significance of noise to both the inverted and non-inverted signal paths. Another advantage of this differential design is that noise injected via the power supplies is a common-mode signal that is cancelled when the inverted and non-inverted signals are recombined. This dramatically improves the power supply rejection ratio.After the differential converter, a differential switched capacitor filter band-passes the analog signal from 200 Hz to 3400 Hz before the signal is digitized by the differential compressing A/D converter.The decoder accepts PCM data and expands it using a differential D/A converter. The output of the D/A is low-pass filtered at 3400 Hz and sinX/X compensated by a differential switched capacitor filter. The signal is then filtered by an active R-C filter to eliminate the out-of-band energy of the switched capacitor filter.The MC14LC5480 PCM Codec-Filter accepts a variety of clock formats, including Short Frame Sync, Long Frame Sync, IDL, and GCI timing environments. This device also maintains compatibility with Our telecommunication products.The MC14LC5480 PCM Codec-Filter utilizes CMOS due to its reliable low-power performance and proven capability for complex analog/digital VLSI functions.   

MC14LC5480DW

5 V PCM Codec-Filter

TheMC14LC5480isageneralpurposeperchannelPCMCodec–FilterwithpinselectableMu–LaworA–Lawcompanding,andisofferedin20–pinDIP,SOG,andSSOPpackages.ThisdeviceperformsthevoicedigitizationandreconstructionaswellasthebandlimitingandsmoothingrequiredforPCMsystems.

MC14LC5480P

5 V PCM Codec-Filter

TheMC14LC5480isageneralpurposeperchannelPCMCodec–FilterwithpinselectableMu–LaworA–Lawcompanding,andisofferedin20–pinDIP,SOG,andSSOPpackages.ThisdeviceperformsthevoicedigitizationandreconstructionaswellasthebandlimitingandsmoothingrequiredforPCMsystems.

MC14LC5480SD

5 V PCM Codec-Filter

TheMC14LC5480isageneralpurposeperchannelPCMCodec–FilterwithpinselectableMu–LaworA–Lawcompanding,andisofferedin20–pinDIP,SOG,andSSOPpackages.ThisdeviceperformsthevoicedigitizationandreconstructionaswellasthebandlimitingandsmoothingrequiredforPCMsystems.

MC14LC5540

ADPCM Codec

ADPCMCodec ThistechnicalsummaryprovidesabriefdescriptionoftheMC14LC5540ADPCMCodec.AcompletedatabookfortheMC14LC5540isavailableandcanbeorderedfromyourlocalMotorolasalesoffice.ThedatabooknumberisMC145540/D. TheMC14LC5540ADPCMCodecisasinglechipimplementa

MC14LC5540

ADPCM Codec; \n\t? Single 2.7 to 5.25 V Power Supply\n\t? Typical 2.7 V Power Dissipation of 43 mW, Power Down of 0.15 mW\n\t? Differential Analog Circuit Design for Lowest Noise\n\t? Complete Mu-Law and A-Law Companding PCM Codec-Filter\n\t? ADPCM Transcoder for 64, 32, 24, and 16 kbps Data Rates\n\t? Universal Programmable Dual Tone Generator\n\t? Programmable Transmit Gain, Receive Gain, and Sidetone Gain\n\t? Low Noise, High Gain, Three Terminal Input Operational Amplifier for Microphone Interface\n\t? Push-Pull 300 Ohm Power Drivers with External Gain Adjust for Receiver Interface\n\t? Push-Pull 300 Ohm Auxiliary Output Drivers for Ringer Interface\n\t? Voltage Regulated Charge Pump to Power the Analog Circuitry in Low Voltage Applications\n\t? Receive Side Noise Burst Detect Algorithm\n;

Overview The MC14LC5540 is EOL. See PCN8987. Possible replacement: none.The MC14LC5540 ADPCM Codec is a single-chip implementation of a PCM Codec-Filter and an ADPCM encoder/decoder, and therefore provides an efficient solution for applications requiring the digitization and compression of voiceband signals. This device is designed to operate over a wide voltage range, 2.7 to 5.25 V, and as such is ideal for battery powered as well as ac powered applications. The MC14LC5540 ADPCM Codec also includes a serial control port and internal control and status registers that permit a microcontroller to exercise many built-in features. The ADPCM Codec is designed to meet the 32 kbps ADPCM conformance requirements of CCITT Recommendation G.721 and ANSI T1.301. It also meets ANSI T1.303 and CCITT Recommendation G.723 for 24 kbps ADPCM operation, and the 16 kbps ADPCM standard, CCITT Recommendation G.726. This device also meets the PCM conformance specification of the CCITT G.714 Recommendation.

MC14LC5540DW

ADPCM Codec

ADPCMCodec ThistechnicalsummaryprovidesabriefdescriptionoftheMC14LC5540ADPCMCodec.AcompletedatabookfortheMC14LC5540isavailableandcanbeorderedfromyourlocalMotorolasalesoffice.ThedatabooknumberisMC145540/D. TheMC14LC5540ADPCMCodecisasinglechipimplementa

MC14LC5540FU

ADPCM Codec

ADPCMCodec ThistechnicalsummaryprovidesabriefdescriptionoftheMC14LC5540ADPCMCodec.AcompletedatabookfortheMC14LC5540isavailableandcanbeorderedfromyourlocalMotorolasalesoffice.ThedatabooknumberisMC145540/D. TheMC14LC5540ADPCMCodecisasinglechipimplementa

MC14LC5540P

ADPCM Codec

ADPCMCodec ThistechnicalsummaryprovidesabriefdescriptionoftheMC14LC5540ADPCMCodec.AcompletedatabookfortheMC14LC5540isavailableandcanbeorderedfromyourlocalMotorolasalesoffice.ThedatabooknumberisMC145540/D. TheMC14LC5540ADPCMCodecisasinglechipimplementa