Datasheet4U Logo Datasheet4U.com

LM1894 - Dynamic Noise Reduction System DNR

Description

The LM1894 is a stereo noise reduction circuit for use with audio playback systems.

The DNR system is non-complementary, meaning it does not require encoded source material.

The system is compatible with virtually all prerecorded tapes and FM broadcasts.

Features

  • 1.
  • 2 Non-Complementary Noise Reduction, “Single Ended”.
  • Low Cost External Components, No Critical Matching.
  • Compatible with All Prerecorded Tapes and FM.
  • 10 dB Effective Tape Noise Reduction CCIR/ARM Weighted.
  • Wide Supply Range, 4.5V to 18V.
  • 1 Vrms Input Overload.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
LM1894 Dynamic Noise Reduction System DNR National Semiconductor
LM1893 LM1893/LM2893 Carrier-Current Transceiver National Semiconductor
LM1895 AUDIO POWE RAMPLIFIER National Semiconductor
LM1896 LM1896/LM2896 Dual Audio Power Amplifier National Semiconductor
LM1897 Low Noise Preamplifier National Semiconductor

Other Datasheets by Texas Instruments

Part Number Description
LM1815 Adaptive Variable Reluctance Sensor Amplifier
LM185-1.2-N Micropower Voltage Reference Diode
LM185-1.2QML Micropower Voltage Reference Diode
LM185-2.5-N Micropower Voltage Reference Diode
LM185-2.5QML Micropower Voltage Reference Diode

Full PDF Text Transcription

Click to expand full text
LM1894 www.ti.com SNAS551C – DECEMBER 1994 – REVISED APRIL 2013 LM1894 Dynamic Noise Reduction System DNR Check for Samples: LM1894 FEATURES 1 •2 Non-Complementary Noise Reduction, “Single Ended” • Low Cost External Components, No Critical Matching • Compatible with All Prerecorded Tapes and FM • 10 dB Effective Tape Noise Reduction CCIR/ARM Weighted • Wide Supply Range, 4.5V to 18V • 1 Vrms Input Overload DESCRIPTION The LM1894 is a stereo noise reduction circuit for use with audio playback systems. The DNR system is non-complementary, meaning it does not require encoded source material. The system is compatible with virtually all prerecorded tapes and FM broadcasts. Psychoacoustic masking, and an adaptive bandwidth scheme allow the DNR to achieve 10 dB of noise reduction.
Published: |