MC44C401L datasheet(10/12 Pages) FREESCALE

10 / 12 page

MTS Stereo Encoder, Rev. 0.5

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

Freescale Semiconductor

Functional Description

Figure 7. MC44C401L Level Setup

Audio Generator

Audio Spectrum

Analyzer

Audio Analyzer

Audio Precision SYS2

Stereo Encoder

Adjust for optimal

separation with

only Left Channel

driven 1800Hz

Left In

Right In

Modulator

No Audio

Pre-emphasis

Attenuator

Spectrum Analyzer

Precision Receiver

(TEK TV1350)

Precision MTS

4.5MHz

Notch Filter

0db / 25kHz deviation =

1.4Vp-p @ 1kHz Mono

(both channels driven)

25kHz deviation Check =

10396Hz @ 25kHz deviation

gives bessel null and Ref

Level on SRD-1

Composite

Video

Wide Band

Output

Composite Video

CVBS In

Input Left Channel only

1800Hz 400mVp-p

Decoder

(Modulation

Sciences SRD1)

NOTES:

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.

MC44C401L Datasheet(PDF) 10 Page - Freescale Semiconductor, Inc

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