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ISD1000A Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers |
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ISD1000A Datasheet(HTML) 2 Page - List of Unclassifed Manufacturers |
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2 / 20 page  Product Data Sheets ISD1000A Series 1–2 -1 GENERAL DESCRIPTION Information Storage Devices’ ISD1000A Chip- Corder® Series provides high-quality, single-chip record/playback solutions for 16- and 20-second messaging applications. The CMOS devices include an on-chip oscillator, microphone pream- plifier, automatic gain control, antialiasing filter, smoothing filter, and speaker amplifier. In addi- tion, the ISD1000A Series is fully microprocessor- compatible, allowing complex messaging and addressing to be achieved. Recordings are stored in on-chip nonvolatile memory cells, providing zero-power message storage. This unique, single-chip solution is made possible through ISD's patented multilevel stor- age technology. Voice and audio signals are stored directly into memory in their natural form, providing high-quality, solid-state voice reproduc- tion. DETAILED DESCRIPTION The ISD1000A ChipCorder Series devices are designed to Record and Play back audio and voice information in a single chip with a minimum of circuit complexity. This compact, easy-to-use, nonvolatile, low-power solution has been made possible by ISD's multilevel storage technology — a breakthrough in storage technology in EEPROM. ISD’s multilevel storage technology results in stor- age density that is eight times greater than digital memory. The ISD1000A nonvolatile analog array consists of 128K cells — the equivalent of 1 Mbits of digital storage. The ISD1000A Series eliminates the need for dig- ital conversion, digital compression, and voice synthesis techniques which often compromise voice quality and are more complicated to use. The ISD1000A Series includes signal conditioning circuits and control functions which enable a com- plete, high-quality Recording and Playback sys- tem in a single device. The ISD1000A is available in two versions, which store voice in 16- or 20-sec- ond arrays. Additional devices may be cascaded ISD1000A SERIES BLOCK DIAGRAM Amp Timing Internal Clock Pre- Amp VCCA VCCD Power Conditioning A0 A2 A3 A4 A5 A7 A6 Address Buffers ANA IN ANA OUT MIC MIC REF AGC Analog Transceivers 128 K Cell Nonvolatile Multilevel Storage Array Amp Sampling Clock PD P/R CE EOM Device Control XCLK AUX IN SP+ SP– Mux VSSA VSSD A1 Automatic Gain Control (AGC) 5-Pole Active Antialiasing Filter 5-Pole Active Smoothing Filter R 06.DataBook_1000A Dsht Page 2 Friday, September 27, 1996 10:44 AM |
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