NTE1845 Integrated Circuit TV Video Processor Description: The NTE1845 is a small–sized multifunctional IC containing the “video, chroma, deflection” circuit of NTSC color TV in a shrink type 30–Lead DIP package. Besides being small–sized, it has such features as greately reduced number of parts and fewer adjustments required. The device contains a peak clip circuit and is well suited for use in small–sized sets. Features: D Small–Sized Package D Minimum Number of Parts Required D Fewer Adjustments Required D Chroma VCO (APC) D Horizontal OSC (H–Hold) D Vertical OSC (V–Hold) D Multifunction Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Maximum Supply Voltage, V16(max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V Maximum Supply Current, I22(max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.0mA Allowable Power Dissipation (TA ≤ +65°C), PD(max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1100mW Operating Temperature Range, Topg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +85°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C Recommended Operating Conditions: (TA = +25°C unless otherwise specified) Recommended Supply Voltage, V16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V Recommended Supply Current, I22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA Operating Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 to 14V Operating Current Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 to 15.0mA Electrical Characteristics: (TA = +25°C, V16 = 12V, I22 = 10mA unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit ACC1 –3 0 +3 dB ACC2 –7 0 +2 dB ACC∅1 – 0 ±3 deg ACC∅2 – 0 ±7 deg B–Y max 5.0 – – VP–P ∆GU – 17 – dB Tint Change Range ∆T – 110 – deg APC Pull–In Range fAPC ±300 – – Color Difference Output DC Voltage ERGB 6.7 7.2 7.7 V Color Difference DC Difference Voltage E∆RGB – – ±300 mV R–Y Relative Demodulation Angle ∠R–Y/B–Y – 104 – deg G–Y Relative Demodulation Angle ∠G–Y/B–Y – –122 – deg R–Y Demodulation Ratio R–Y/B–Y – 0.9 – G–Y Demodulation Ratio G–Y/B–Y – 0.3 – Gpmin –5 –3 –1 dB Gpmax 12 15 18 dB VG 12 15 18 dB Contrast Variable Range ∆GC – 18 – B Frequency Response ∆GV –5 – – dB VS.S – 9.3 – V fV – fH/296.5 – Hz Vertical Blanking Pulse Width TBL – 19H – Vertical Drive Stage Voltage Gain VG – 16 – dB Horizontal Free–Running Frequency fH – 15.734 – kHz Horizontal Drive Output Pulse Width TH – 24.5 – µs fPULL ±400 – – Hz Chroma ACC Amplitude Characteristics ACC Phase Characteristics Maximum B–Y Demodulation Output Unicolor Amplitude Characteristics Video Video Tone Control Characteristics Video Voltage Gain f = 5MHz Synchronization, Deflection Sync Separation Input DC Level Vertical Free–Running Frequency Horizontal Sync Pull–In Range Pin Connection Diagram 2nd BPA Sharp Video Soft Video Contrast Contrast VR Pedestal Clamp Brightness Control Brightness VR R–Y G–Y B–Y Color Killer Tint Control VCO APC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 30 16 1 15 1st BPA ACC GND Sync Separator Burst Gate Pulse Vert Sync Separator Ramp Generator Vert Driver (+) BH (110V) AFC (+) BH Horiz OSC X–Ray Protect Horiz Pre–Driver Output VCC .388 (8.6) 1.066 (27.0) .200 (5.08) Max .070 (1.78) .125 (3.17) .400 (10.16)