NJM2519A RF Modulator for VHF Band DESCRIPTION PACKAGE OUTLINE The NJM2519A is a RF modulator IC especially designed for VHF 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 BLOCK DIAGRAM 8 7 6 5 RF OSC REGULATOR AUDIO FM MODULATOR MIXER CLAMP & WHITE CLIP 3 2 1 4 - 1 - RF OUT OSC GND REG OUT VIDEO IN VCC 4.5MHz AUDIO IN TANK NJM2519A ABSOLUTE MAXIMUM RATINGS (T =25C) A Parameter Symbol Ratings Unit Supply Voltage V 7 V CC Power Dissipation P 300 mW D Input Voltage V -0.3 to V V I CC Operating Temperature Range T -20 to +75 C opr Storage Temperature Range T -40 to +125 stg C RECOMMENDED OPERATING VOLTAGE RANGE (T =25C) A Parameter Condition Symbol Min. Typ. Max. Unit Operating Voltage V 4.5 5.0 5.5 V CC ELECTRICAL CHARACTERISTICS (V =5V,T =25C) CC A Parameter Condition Symbol Min. Typ. Max. Unit Operating Current No video/audio input signal, I 11.5 15.3 19.1 mA CC Video Output Level Video input signal(Pin1)=0.5V V (83) 86 (89) dBu PP O (Note 1) Video Modulation Depth Video input signal(Pin1)=0.5V mp (70) 76 (82) % PP (Note 1) Video Limiter Modulation Video input signal(Pin1)=1.0V PP mpmax (88) 94 (98) % Depth (Note 1) Video input signal(Pin1)=0.5V PP Differential Gain DG - 3 - % Staircase Video input signal(Pin1)=0.5V PP Differential Phase DP - 3 - deg Staircase Picture-to-sound Ratio Video input signal(Pin1)=0.5V PS (13) 16 (19) dB PP (Note 1) Sound FM Modulation Deviation of fs per 100mV b - 0.51 - KHz/mV Sensitivity Audio input signal(Pin7)=0.05V PP Audio Distortion THD - 0.3 - % 1kHz sine wave Audio Signal-to-noise Sound Modulation 60% ASN - 60 - dB Ratio 1kHz sine wave Maximum Sound FM Audio input signal(Pin7)=1.0V PP msmax - 700 - % Modulation 1kHz sine wave (Note 1) Because AC characteristics largely depends on application circuit, these parameters are specified by the DC characteristics as shown in next page. - 2 -