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| NTE7168 Integrated Circuit NTSC Single Chip Color TV Description: The NTE7168 combines all the functions required for an NTSC color TV system in a 56 - Lead DIP type package. This device includes PIF/SIF circuits, video/chroma/deflection circuits, chroma band pass filters, red and green OSD interfaces, and 1ch Audio Video switches. Features: PIF Stage D 3 - Stage Variable - Gain PIF Amplification Stage D High - Speed Response AGC with Dual Time Constants (Peak AGC) D Single End AFT Output with Defeat Function D RF Delay AGC Output (Reverse AGC) D Sync. Negative Detected Video Output Polarity D Internal Black/White Noise Inverter D Minimum Externally Mounted Parts and Adjusting Spots SIF Stage D 3 - Stage limiter Amplification Stage D Quadrature FM Detector Circuit with Sound Mute Function D 1 Channel External Audio Input D High - Performance Electronic Attenuator Circuit D Preamplifier Circuit Video Stage D 2nd Order - Differential - Type Picture Sharpness Circuit (DC Control) D Contrast Control with Unicolor Function D Brightness Control with Pedestal Clamping Circuit (Variable DC Restoration Ratio) D External Video Input Chroma Stage D Internal 1/2fSC Trap D Internal band Pass Filter D ACC Circuit D Color Control Circuit D Unicolor Control Circuit D Color Differential Output D Tint Control Circuit D Adjustment - Free APC Circuit Features (Cont'd): Deflection Stage D High - Performance Sync Separation Circuit D Adjustment - Free Horizontal Oscillation Circuit D Stable Vertical Synchronization D Sawtooth - Type AFC (Internal sawtooth Wave Generator) D Horizontal Predrive Output D X - Ray Protection Circuit D Vertical NFB Amplification Circuit OSD Interface Stage D Fast Blanking SW Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Power Supply Voltyage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13V Input Terminal Voltage, Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VCC+0.3V Input Signal Amplitude, ein . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4VP - P Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.92W Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 20 to +65C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55 to +150C Note 1. When using the device at above TA = +25C, decrease the power dissipation by 15.3mW for each increase of +1C. Recommended Power Supply Voltage: Parameter Power Supply Voltage Symbol VCC H. VCC Pin26 Test Conditions Pin14, Pin48 Min 8.5 8.5 Typ 9.0 9.0 Max 9.5 9.5 Unit V V OSD Logic Table: Input Mode TV Black Red Blue Green Yellow Magenta Cyan White YS (Pin29) L H (*) (*) (*) (*) (*) (*) (*) R (Pin19) L L H L L H H L H G (Pin20) L L L L H H L H H B (Pin28 L L L H L L H H H R-Y (Pin15) TV L H L L H H L H Output B-Y (Piin17) TV L L H L L H H H G-Y (Pin18) TV L L L H H L H H (*): Don't Care. Pin Connection Diagram Audio Output 1 RF AGC Output 2 RF AGC Delay 3 SIF Tank 4 1st AGC 5 External Audio Input 6 2nd AGC 7 PIF/SIF GND 8 PIF Input (1) 9 PIF Input (2) 10 fc Adjustment 11 APC Filter 12 3.58 X'tal 13 V/C/D VCC 14 R - Y Output 15 - Y Output 16 G - Y Output 17 B - Y Output 18 R OSD Input 19 G OSD Input 20 FBP Input 21 X - Ray 22 Horizontal Output 23 Horizontal AFC 24 32fH VCO 25 H. VCC 26 Vertical Output 27 B OSD Input 28 56 Audio Control 55 Audio TV Input 54 De - Emphasis 53 SIF Input 52 AFT Output 51 AFT Tank 50 PIF Tank (2) 49 PIF Tank (1) 48 PIF/SIF VCC 47 TV Detection Output 46 Tint Control 45 TV Input 44 Color Control 43 Contrast Control 42 External Video Input 41 V/C/D GND 40 Video OUT (1) 39 Vert Sync Sep Filter 38 Brightness Control 37 Video IN 36 Sharpness Control 35 OSD Bright Control 34 Video Out (2) 33 Chroma Input 32 Killer Filter 31 Vertical Ramp 30 Vertical NFB 29 YS OSD Input 56 29 1 28 2.000 (50.9) Max .165 (4.2) .551 (14.0) .070 (1.78) .118 (3.0) .600 (15.24) |
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