MC145503中文资料PCM Codec-Filter Mono-Circuit数据手册恩XP规格书

描述 Description

Overview The MC145503 has been discontinued. Suggested replacement: none.The MC145500, MC145501, MC145502, MC145503, and MC145505 are all per channel PCM Codec–Filter mono–circuits. These devices perform the voice digitization and reconstruction as well as the band limiting and smoothing required for PCM systems. The MC145503 is a general purpose device that is offered in a 16-pin package. It is designed to operate in both synchronous and asynchronous applications andcontains an on-chip precision reference voltage. These devices are pin–for–pin replacements for Motorola’s first generation of MC14400/01/02/03/05 PCM mono–circuits and are upwardly compatible with the MC14404/06/07 codecs and other industry standard codecs. They also maintain compatibility with Motorola’s family of MC33120 and MC3419 SLIC products. The MC145500 family of PCM Codec–Filter mono–circuits utilizes CMOS due to its reliable low–power performance and proven capability for complex analog/digital VLSI functions.   

特性 Features

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• 16–Pin Package
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• Transmit Bandpass and Receive Low–Pass Filter On–Chip
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• Pin Selectable Mu–Law/A–Law Companding with Corresponding Data Format
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• On–Chip Precision Reference Voltage (3.15 V)
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• Power Dissipation of 50 mW, Power–Down of 0.1 mW at ± 5 V
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• Automatic Prescaler Accepts 128 kHz, 1.536, 1.544, 2.048, and 2.56 MHz
for Internal Sequencing
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• Complete Access to the Three Terminal Transmit Input Operational Amplifiers