MC44BS373CAD datasheet(17/52 Pages) MOTOROLA

tên linh kiện	MC44BS373CAD

Giải thích chi tiết về linh kiện	PLL-Tuned UHF and VHF Audio/Video High-Integration Modulator

PDF	52 Pages

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nhà sản xuất	MOTOROLA [Motorola, Inc]

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MC44BS373CA Data Sheet

Characterization Measurement Conditions

Figure 5. Typical Audio Performance

14 Characterization Measurement Conditions

Table 23 shows the MC44BS373CA default configuration unless otherwise specified.

RF inputs/output into 75-

Ω load using a 75- to 50-Ω transformation. Video input 1 Vp-p. Audio

pre-emphasis circuit enabled.

Table 23. Device Default Configuration

Device Feature

Default Setting

Peak white clip

Enabled

UHF oscillator

Sound and video modulators

Sound subcarrier frequency

5.5 MHz

Sound oscillator

Sound PLL reference frequency

31.25 kHz

Logic output port

Low

Picture-to-sound carrier ratio

12 dB

System L

Disabled

Test pattern

Disabled

All test mode bits

Zero

Frequency

From channel 21 to 69

Table 24. Measurement Conditions

Device and Signal Set-Up

Measurement Set-Up

TVOUT Output Level

Video: 10-step grey scale

No audio

Measured picture carrier in dB

µV with the HP8596E spectrum analyzer

using a 75- to 50-

Ω transformation, all cable losses and transformation

pads having been calibrated.

Measurement used as a reference for other tests: TVout_Ref

FM Audio Weighted Signal to Noise

471

521

571

621

671

721

771

821

871

Frequency (Mhz)

Typical

Minimum specification

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