Part Number	LM1894 Datasheet
Manufacturer	National Semiconductor
Overview	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 w. n Non-complementary noise reduction, “single ended” n Low cost external components, no critical matching Typical Application DS007918-1 *R1 + R2 = 1 kΩ total. See Application Hints. Order Number LM1894M or LM1894N See NS Package Number M14A or N14A FIGURE 1. Component Hook-Up for Stereo DNR Syst.