NJM2519A RF Modulator for VHF Band DESCRIPTION The NJM2519A is a RF modulator IC especially designed for VHF PACKAGE OUTLINE band RF modulator and consists of video clamp circuit, white clip circuit, video AM modulator and audio FM modulator, built into one chip. FEATURES NJM2519AM • Operating Voltage 5V • VHF Oscillator on chip • Regulator on chip • Bipolar Technology • Package Outline: DMP8 OSC REG OUT VCC AUDIO IN BLOCK DIAGRAM 8 7 6 5 RF OSC REGULATOR AUDIO FM MODULATOR MIXER CLAMP & 1 2 3 4 RF OUT GND VIDEO IN 4.5MHz TANK WHITE CLIP -1- NJM2519A ABSOLUTE MAXIMUM RATINGS Parameter Symbol Supply Voltage VCC Power Dissipation PD Input Voltage Operating Temperature Range Storage Temperature Range VI Topr Tstg Ratings 7 300 (TA=25°C) Unit V mW -0.3 to VCC -20 to +75 -40 to +125 RECOMMENDED OPERATING VOLTAGE RANGE Parameter Condition Operating Voltage Symbol VCC ELECTRICAL CHARACTERISTICS Parameter Condition Symbol Operating Current No video/audio input signal, ICC Video Output Level VO Video input signal(Pin1)=0.5VPP (Note 1) Video Modulation Depth mp Video input signal(Pin1)=0.5VPP (Note 1) Video Limiter Modulation Video input signal(Pin1)=1.0VPP mpmax Depth (Note 1) Video input signal(Pin1)=0.5VPP Differential Gain DG Staircase Video input signal(Pin1)=0.5VPP DP Differential Phase Staircase Picture-to-sound Ratio PS Video input signal(Pin1)=0.5VPP (Note 1) Sound FM Modulation Deviation of fs per 100mV βb Sensitivity Audio input signal(Pin7)=0.05VPP Audio Distortion THD 1kHz sine wave Audio Signal-to-noise Sound Modulation 60% ASN Ratio 1kHz sine wave Maximum Sound FM Audio input signal(Pin7)=1.0VPP msmax Modulation 1kHz sine wave V °C °C Min. 4.5 Typ. 5.0 Max. 5.5 (TA=25°C) Unit V (VCC=5V,TA=25°C) Max. Unit 19.1 mA Min. 11.5 Typ. 15.3 (83) 86 (89) dBu (70) 76 (82) % (88) 94 (98) % - ±3 - % - ±3 - deg (13) 16 (19) dB - 0.51 - KHz/mV - 0.3 - % - 60 - dB - 700 - % (Note 1) Because AC characteristics largely depends on application circuit, these parameters are specified by the DC characteristics as shown in next page. -2- 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 Gvv1=Gvvh-Gvvl Gvv 48 108 mV Amplitude 1 Mp=((Gvv-Mw)/Gvv)x100 Video Modulation Depth Mp 66 78 % where Mw=Mwh-Mwl Video Limiter Modulation Mpmax=((Gvv-Wc)/Gvv)x100 Mpmax 85 94 98 % Depth (Note 2) where Wc=Wch-Wcl Picture-to-sound Ratio Ps=20log(Gvv/(Gva/2)) Ps 8 18 dB (Note 2) Explanation of symbols • Vv • Voso : OSC output voltage at Pin8 • Gvvh : RF OUT output voltage at Pin1 OSC(Pin8) input = Voso+0.3V • Gvvl : • Mwh : • 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 • Gva : RF OUT output level at Pin1(4.5MHz Sine wave [peak to peak]) OSC(Pin8) input = Voso+0.6V : VIDEO IN output voltage at Pin3 RF OUT output voltage at Pin1 OSC(Pin8) input = Voso-0.3V RF OUT output voltage at Pin1 OSC (Pin 8) input = Voso+0.3V,VIDEO IN(Pin3) input=Vv + 0.41V : RF OUT output voltage at Pin1 OSC (Pin 8) input = Voso-0.3V,VIDEO IN(Pin3) input=Vv + 0.75V -3- NJM2519A VC AC TEST CIRCUIT AUDIO IN 10p 0.1u 0.1u 7 6 5 RF OUT GND VIDEO IN 4.5MHz TANK VCC REG OUT OSC 8 0.1u AUDIO IN 1n 1 2 3 4 + 1n 1n 0.1u 68p 75 RF OUT VIDEO IN VCC 6 5 GND VIDEO IN 4.5MHz TANK REG OUT 7 RF OUT OSC 8 0.1u 0.1u VCC 1n AUDIO IN DC TEST CIRCUIT 1 2 3 4 1n 1n 68p -4- NJM2519A TERMINAL CHARACTERISTICS Typ.DC No. Symbol Voltage (V) Equivalent Circuit Function 6 1 RF OUT 1 4 RF Signal Output 2 2 GND - GND 6 3 VIDEO IN 1.9 3 Video Signal Input 2 6 4 4.5MHz TANK 4.5MHz Tank Coil for Sound FM Modulation Circuit 4 2.9 2 6 5 AUDIO IN 0.035 Audio Signal Input 5 2 6 VCC - Power Supply -5- NJM2519A No. Symbol Typ.DC Voltage (V) Equivalent Circuit Function 6 7 REG OUT 7 4 Regulator Output 2 6 8 OSC 2.2 8 2 -6- RF Oscillator Pin NJM2519A TYPICAL CHARACTERISTICS TA=25°C VCC vs ICC VCC vs VIDEO OUTPUT LEVEL 30 90 89 88 87 20 Vo [ dBuV ] ICC [ mA ] 25 15 10 86 85 84 83 5 82 0 80 81 0.0 2.0 4.0 VCC [ V ] 6.0 4.5 8.0 5.5 6.0 6.5 7.0 USA3ch(61.25MHz) VCC [ V ] VCC vs VIDEO MODULATION DEPTH USA4ch(67.25MHz) VCC vs AUDIO FM SENSITIVITY 90 0.70 88 0.65 86 0.60 βb [ kHz/mV ] 84 mp [ % ] 5.0 82 80 78 76 0.55 0.50 0.45 0.40 74 0.35 72 0.30 70 4.5 5.0 5.5 VCC [ V ] 6.0 6.5 7.0 USA3ch(61.25MHz) 4.5 5.0 5.5 6.0 6.5 7.0 VCC [ V ] USA4ch(67.25MHz) -7- MEMO [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.