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NTE1846 Integrated Circuit NTSC System Single-Chip Color TV Signal Processor
Description: The NTE1846 is an integrated circuit in a 52-Lead DIP type package designed for use as a color TV signal processor. This device contains signal processing functions for video IF, sound IF, video, color, deflection signals, on a single chip. Combined with a tuner and a simple output stage of discreet transistors, the NTE1846 enables more rationalized designs for color TV sets. Features: D Large Integration Enables Rationalization and High Reliability of Equipment and Low Power Consumption. D A Direct Output Pin for Sound FM Detector is Provided, Applicable to Sound Multiplexing. D The Most Appropriate Constants can be Set by the Synchronization Separation Input Pins for Horizontal and Vertical Deflection. D No Horizontal Free Run Frequency Adjustments. D Capable of AFT Defeat, Sound Muting D DC Volume Controls Picture Quality, Contrast, Luminance, Color Saturation, Tint, and Volume. Application: NTSC System Color Television Set Absolute Maximum Ratings: (TA = +25C, unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4W Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +65C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +125C Recommended Operating Conditions: Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9V Horizontal Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14mA Operating Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.5V to 9.5V Operating Horizontal Supply Currents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12mA to 16mA
Pin Connection Diagram
Electronic Attenuator Control FM Demodulator Coil De-Emphasis, Sound Direct I/O Audio Driver Output Audio Negative Feedback, Bypass IF AGC Filter RF AGC Control GND VIF Input VIF Input VIF, SIF Power Supply Horizontal Power Supply AFC Filter AFC Flyback Pulse Inpu 32fH OSC C X-Ray Protector Signal Input Vertical Synchronizing Signal Vertical OSC Sawtooth Wave Generator Capacitor Rated Current Pull-In Vertical AC/DC Feedback Input Vertical Output VCD Power Supply Horizontal Pre-Drive Output Tint Control Video Output 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 RF AGC Output Video Detector Output AFT Output Brightness Control SIF Input AFT Coil Video Detector Coil Video Detector Coil Vertical Synchronization Separation Input Synchronizing Output Horizontal Synchronization Separation Input Pedestal Holding Video Input 1 Video Input 2 Contrast Control Video Tone Control Color Signal Input GND ACC Filter Killer Filter APC Filter 3.58MHz OSC Color Saturation Control G - Y Demodulated Output B - Y Demodulated Output R - Y Demodulated Output
52
27
1 1.813 (46.05) Max
26 .512 (13.0) .217 (5.5) Max
.070 (1.77) 1.750 (44.5)
.118 (3.0) Min
.600 (15.24)

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