NJM2519AM 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJM2519AM

RF Modulator for VHF Band

Japan Radio Corporation  

NJM2519A

„ DC ELECTRICAL CHARACTERISTICS (VCC=5V,TA=25°C, otherwise noted. All measurements performed in

the DC test circuit are shown in next page)

Parameter

Condition

(Note 2) Symbol Min. Typ. Max. Unit

Video Output Signal

Amplitude 1

Video Modulation Depth

Video Limiter Modulation

Depth

(Note 2)

Gvv1=Gvvh-Gvvl

Mp=((Gvv-Mw)/Gvv)x100

where Mw=Mwh-Mwl

Mpmax=((Gvv-Wc)/Gvv)x100

where Wc=Wch-Wcl

Gvv 48

Mp

66

Mpmax 85

-

108 mV

-

78

%

94

98

%

Picture-to-sound Ratio Ps=20log(Gvv/(Gva/2))

Ps

8

-

18

dB

(Note 2) Explanation of symbols

• Vv : VIDEO IN output voltage at Pin3

• Voso : OSC output voltage at Pin8

• Gvvh : RF OUT output voltage at Pin1

OSC(Pin8) input = Voso+0.3V

• Gvvl : RF OUT output voltage at Pin1

OSC(Pin8) input = Voso-0.3V

• Mwh : RF OUT output voltage at Pin1

OSC (Pin 8) input = Voso+0.3V,VIDEO IN(Pin3) input=Vv + 0.41V

• Mwl : RF OUT output voltage at Pin1

OSC (Pin 8) input = Voso-0.3V,VIDEO IN(Pin3) input=Vv + 0.41V

• Wch : RF OUT output voltage at Pin1

OSC (Pin 8) input = Voso+0.3V,VIDEO IN(Pin3) input=Vv + 0.75V

• Wcl : RF OUT output voltage at Pin1

OSC (Pin 8) input = Voso-0.3V,VIDEO IN(Pin3) input=Vv + 0.75V

• Gva : RF OUT output level at Pin1(4.5MHz Sine wave [peak to peak])

OSC(Pin8) input = Voso+0.6V

-3-

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