Details, datasheet, quote on part number: NJM2542
CategoryMultimedia => Video
DescriptionVif/sif Demodulator
CompanyNJR Corporation
DatasheetDownload NJM2542 datasheet
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Features, Applications

DESCRIPTION The is a VIF/SIF demodulator especially designed for TV and VCR based on the NTSC system. FM-PLL(Phase Locked Loop) detector reduces the number of pins and external parts, for efficient use of set space. FEATURES Operating Voltage 5V Alignment-free Automatic Frequency Tuning Alignment-free FM-PLL Demodulator Intercarrier type Bipolar Technology Package Outline: SSOP20 NJM2542V PACKAGE OUTLINE

ABSOLUTE MAXIMUM RATINGS Parameter Symbol Supply Voltage Vcc Power Dissipation PD Operating Temperature Range Topr Storage Temperature Range Tstg * Test IC soldered on PC board RECOMMENDED OPERATING VOLTAGE RANGE Parameter Condition Operating Voltage ELECTRICAL CHARACTERISTICS Standard Test Conditions: (TA =25C,Vcc=5V,IF=45.75MHz/90dBuV,IF IN has 1:1Transformer instead of SAW filter.) Parameter Condition Symbol Min. Typ. AFT-Defeat Supply Current Icc 51 IFGR-MAX(AGCFLT=GND) VIF Section No IF Signal Video Output Level (DC) VDC 3.6 FGR-MAX(AGCFLT=GND) Video Output Level Video 100% White,87.5% Mod 1.5 1.9 Video Bandwidth -3dB Point fvc 7 Video S/N VIDEO:100% White,87.5%Mod Video S/N 50 56 Intermodulation 34 40 Differential Gain DG 2 Differential Phase DP 2 Input Signal Voltage Sensitivity -3dB Point VINMIN 44 Maximum Input signal Voltage VS Ratio (>24%,<34%) VINMAX 105 IF Gain Control Range VINMAX-VINMIN 61 RF AGC Maximum Voltage IFGR-MAX(AGCFLT=GND) VRAH 4.9 RF AGC Minimum Voltage IFGR-MIN(AGCFLT= V+) VRAL 0 0.03 Picture Carrier Capture Range 1 CL-U 1.3 Picture Carrier Capture Range 2 CL-L 3.5 AFT Sensivity 20 30 AFT Maximum Voltage VAFH 4.2 4.9 AFT minimum Voltage VAFL 0 0.05 Sync Level VOSYNC 1.35 AFTOUT=2.5V VCO Frequency Range FVCOWB 250 Center=45.65MHz SIF Section(SIF=4.5MHz/90dBuV) Audio Output DC Voltage LIMIN=4.5MHz CW VDCA 1.8 2.2 Audio Output LIMIN=4.5MHz FM25kHz dev VAFO 390 540 Total Harmonic Distortion LIMIN=4.5MHz FM25kHz dev THDAF 0.2 Input Limiting Voltage Sensivity LIM 38 AM Rejection Ratio FM25kHzDEV :AM30% AMR 50 56 Audio S/N De-Emphasis: ON AF S/N 56 Max. Unit mA Symbol Vcc Min. 4.75 Typ. 5.0 (TA=25C) Max. Unit V (TA=25C) Unit mW C


Description Equalizer AMP Output APC Filter (PLL loop Filter) Equalizer AMP Input Power Supply VCO Coil 1 VCO Coil 2 Reference Voltage for Audio Video Demodulator Output AGC Filter 2 Limiter (sound intercarrier) Input Audio Output Audio High Pass Filter AGC Filter 1 RF AGC Output GND IF Differential Input 1 IF Differential Input 2 RF AGC Adjustment AFT Output Equalizer


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