LM2889N ,LM2889 TV Video ModulatorLM2889TVVideoModulatorDecember1994LM2889TVVideoModulatorGeneralDescription
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LM2889N
LM2889 TV Video Modulator
TL/H/5079
LM2889
Video
Modulator
December 1994
LM2889 TV Video Modulator
General Description
The LM2889is designedto interface audioand videosig-
nalstothe antenna terminalsofaTV receiver.It consistsof sound subcarrier oscillator andFM modulator, video
clamp,andRF oscillatorsand modulatorsfortwo low-VHF
channels.
The LM2889 allows video information from VTRs,videodisk
systems, games, test equipment,or similar sourcestobe
displayedon blackand whiteor colorTV receivers.
FeaturesPinforpin compatible with LM1889RF section Low distortion FM sound modulator (less than 1%
THD) Video clampfor AC-coupled video Low sound oscillator harmonic levels 10Vto 16V supply operationDC channel switching Excellent oscillator stability Low intermodulation products
Block and Connection Diagrams (Dual-In-Line Package) Test Circuit
TL/H/5079–1
Order NumberLM2889N
SeeNS Package Number N14A
C1995National SemiconductorCorporation RRD-B30M115/PrintedinU.S.A.
