MC44C401LAC Datasheet, PDF (10/12 Pages) Freescale Semiconductor, Inc – MC44C401L MTS Stereo Encoder

Functional Description
Audio Precision SYS2
Audio Generator
Left In
Right In
Audio Spectrum
Analyzer
Input Left Channel only
1800Hz 400mVp-p
Stereo Encoder
Attenuator
Composite Video
CVBS In
Audio Analyzer
Adjust for optimal
separation with
only Left Channel
driven 1800Hz
4.5MHz
Notch Filter
Spectrum Analyzer
Modulator
No Audio
Pre-emphasis
Composite
Video
Precision Receiver
(TEK TV1350)
0db / 25kHz deviation =
1.4Vp-p @ 1kHz Mono
Precision MTS
(both channels driven)
Decoder
(Modulation
Sciences SRD1)
Wide Band
Output
25kHz deviation Check =
10396Hz @ 25kHz deviation
gives bessel null and Ref
NOTES:
Level on SRD-1
1. Input 1kHz both channels @ 1.45Vp-p.
2. Set attenuator for 25kHz deviation out of modulator.
3. Input 1.8kHz 0.4Vp-p on left channel only and
optimize stereo separation with attenuator.
Figure 7. MC44C401L Level Setup
MTS Stereo Encoder, Rev. 0.5
10
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Freescale Semiconductor