NTE1673 Integrated Circuit Video Chroma Processor Description: The NTE1673 is a multifunctional integrated circuit in a 28–Lead DIP type package where an APC chroma circuit is formed so compactly as to use only 16 pins with the characteristic requirements remaining fulfilled and the rest of pins are used for video circuits. It contains a double doefferential circuit enabling soft video tone, a color temperature control circuit enabling reproduction of beautiful bright white color and true color, and a high level contrast circuit elinimating brightness drop at the time of contrast adjustment, thereby allowing a wider design margin for television set design engineers. Functions: D Band–Pass Amp D Voltage Controlled Oscillation D Peak Clip D Color Saturation Control D Double Differential D Killer D Contrast Amp D Color Temperature Control D Tint Control D DC Restoration D Automatic Saturation Control D Automatic Phase Control D Blanking D Chroma Demodulation D Bright Control Functions: D High level contrast system eliminating brightness drop at the time of contrast adjustment. D Double differential circuit enabling soft video tone. D Color temperature control function enabling reproduction of beautiful bright white color and true color D Capable of being connected to IC for VIR. D Only one adjustement: APC adjustment D Minimum number of external parts required. Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Maximum Supply Voltage, VCCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.5V Allowable Power Dissipation (TA ≤ +65°C), PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 875mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +125°C Electrical Characteristics: (TA = +25°C, VCC = 12V, 0dB input: burst 100mVp–p, chroma 200mVp–p unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit +6dB –7 0 ±3 dB –20dB – –3 +2 dB +6dB – 0 ±3 deg –20dB – ±3 ±7 deg Vi(K) –55 –47 –40 dB ΘOBM 4.5 5.5 – Vp–p Tint Change Range ∆T(Tmax–Tmin) – 120 – deg Static Phase Error φΘ ±1.5 ±5 – deg APC Pull–in Range fp ±350 ±500 – Hz V12, V13, V14 6.7 7.2 7.7 V V12 – V13 – 300 – mV Gp max 7.0 9.5 12.0 dB Gp min –5.0 –2.5 –1.0 dB Gv 10 12.5 15.0 dB Contrast Variable Range ∆GC 8 10 12 dB Frequency Characteristic ∆GV –3 – – dB Chroma Characteristics ACC Amplitude Characteristic GA φA ACC Phase Characteristic Killer Operating Point Maximum B–Y Demodulation Demodulation Output DC Voltage Demodulation Output DC ∆f = ±100Hz Video Characteristics Video Tone Control Video Gain f = 5MHz Pin Connection Diagram Video Input Color Control ACC Detector VCC Killer RC Network GND Tint Control X’tal Tint Network Demod Network APC Control R – Y Demodulation G – Y Matrix B – Y Demodulation 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 Video Tone Control Sharp Video Tone Network Sharp Video Tone Network Soft Video Tone Network Contrast Control High Level Contrast Control DC Restorer Network Brightness Control Horiz Sync Output Brightness Sample Horiz Blank Pulse Color Temp Control Horiz Sync Input Video Output Driver 14 1 15 28 1.469 (37.32) Max .540 (13.7) .250 (6.35) .100 (2.54) 1.300 (33.02) .122 (3.1) Min .600 (15.24)