NTE1790 Integrated Circuit Video IF, Chroma Deflection Description: The NTE1790 combines all the functions required for an NTSC color TV system on a 64–Lead DIP shrink type plastic package. This device is designed to have wide application capability, from a fundamental CTV application to a high–end MPX CTV with quasi–parallel SIF system, with minimal external parts and adjustments. A quasi–parallel SIF system assures buzz free sound reproduction. Features: PIF Section D 3–Stage Variable Gain PIF Amplifier D High Speed Peak AGC with Dual Time Constants D Single End AFT Output with Defeat Function D A Delayed RF AGC Output (Reverse AGC) D Sync Positive Detected Video Output Polarity D Internal Black/White Noise Inverter Quasi–Parallel Inter Carrier Detector D 3–Stage Variable Gain Intercarrier IF Amplifier D Independent Peak AGC D Intercarrier Detector with 90 deg. Carrier Shifter SIF Section: D 3–Stage Limiter Amplifier D Differential Peak Detector D Separated Detector Output and Electronic Attenuater Input for Multiplex TV Sound Reception D Excellent Electronic Attenuater D Preamplifier with an NF Terminal Video Section: D 2nd Order Picture Sharpness (DC Control) D Contrast Control with Uni–Color Function D Brightness Control with Pedestal Clamping Circuit (Adjustable DC Restoration Ratio) D Internal Vertical Blanking Chroma Section: D ACC Circuit D Color Control Circuit D Uni–Color Control Circuit D Adjustment Free APC Circuit D Tint Control Circuit With Sync Pulse Output D Color Differential Outputs Deflection Section: D Excellent Sync Separator D Adjustment Free Count Down System D Stable Vertical Synchronization D Saw–Tooth Type AFC D Horizontal Pre–Driver D X–Ray Protector D Vertical Drive Amplifier Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V Input Signal Level, ein . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Vp–p RF AGC Voltage, VRFAGC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V Horizontal Section Supply Voltage, VCCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2660mW Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212mW/°C Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +65°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C Recommended Supply Voltage: Parameter Symbol Test Conditions Min Typ Max Unit PIF Section (Pin19) 8.5 9.0 9.5 V QIF, SIF Section (Pin37) 8.5 9.0 9.5 V Video, Chroma, Deflection Section (Pin16) 8.5 9.0 9.5 V Horizontal Section (Pin58) 6.3 6.8 7.3 V AC Characteristics: (TA = +25°C, VCC = 9V, 6.8V unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit PIF Section Input Sensitivity vin 70 120 200 µVrms IF AGC Gain Reduction GR 60 64 – dB Video Bandwidth BW 4.5 – – MHz – 0 ±1 dB Video Ripple Differential Phase DP – – 5 deg. Differential Gain DG – – 10 % Video White Peak V47 3.2 3.7 4.4 V Noise Inverter White Inverter VWTH 2.7 3.0 3.3 V White Clamp VWCL 4.6 5.0 5.4 V Black Inverter VBTH 6.4 6.8 7.2 V Black Clamp VBCL 4.8 5.2 5.6 V 40 – – dB I2nd 40 – – dB Input Impedance RiPIF 1.75 2.5 3.25 kΩ Input Capacitance CiPIF 2 4 8 pF 5.1 6.5 10.3 V – – ±3 V Carrier Suppression Harmonics Suppression AFT Center Voltage No Signal Offset AC Characteristics (Cont’d): (TA = +25°C, VCC = 9V, 6.8V unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit – 15 25 kHz/V PIF Section (Cont’d) AFT Sensitivity AFT Voltge Swing 920kHz Beat A 6 11 – V I920 32 – – dB vinQ 70 120 200 µVrms 1.0 1.5 2.0 VP–P QIF Section Input Sensitivity 4.5MHz Output Level AGC Gain Reduction GR Q 60 64 – dB Input Impedance RiQIF 1.75 2.5 3.25 kΩ Input Capacitance CiQIF 2 4 10 pF Limiting Sensitivity vLIM 115 140 180 µVrms Detected Output vOD 130 155 – mVrms AM Rejection AMR 20 – – dB SIF Bandwidth BW SIF 120 160 – kHz THD Bandwidth BD THD 100 140 – kHz SIF Section THD = 1.5% Attenuation AC Gain GVATT 4 6 8 dB Maximum Attenuation ATTmax 70 – – dB GVAF – 18 – dB Input Impedance, Pin52 zi52 1.8 2.5 3.2 kΩ Input Impedance, Pin53 zi53 14 19 24 kΩ Video Output Impedance zo13 15 30 100 Ω Brightness Control Voltage VBR 3.9 4.3 4.7 V Brightness Sensitivity GBR 3.0 3.4 3.8 Minimum Linear Video Input Vdi1 – 2.3 2.7 V Maximum Linear Video Input Vdi2 5.0 5.5 – V Video Input Dynamic Range Vdi 2.7 3.2 – VP–P AF Amp AC Gain Video Section Minimum Video Output Vdo1 0 0.3 1.1 V Maximum Video Output Vdo2 7.5 7.9 9.0 V 2nd Order Differential Input Dynamic Range VdiP 0.3 0.4 0.5 VP–P Video Gain GV 3.2 4.2 4.9 Frequency Response Gf –3.2 –1.0 –0.8 dB Contrast Control Voltage Range dVct 0.71 1.4 2.09 V Contrast Control Range dGct 11 12 13 dB Contrast Control Center Voltage Vcto 4.2 4.5 4.8 V Frequency Response Dependence dGf – 0 0.9 dB dGpsmin –10 –6 –3.4 dB dGpsmax 10 11 12 dB dGps0 –3.0 –1.7 0 dB dVps 0.68 1.2 1.43 V Frequency Response at Minimum Picture Control Maximum Control Center Control Picture Control Voltage Range AC Characteristics (Cont’d): (TA = +25°C, VCC = 9V, 6.8V unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit V Video Section (Cont’d) Vertical Blanking Pulse Output Level VV 8.0 8.9 9.0 Horizontal Blanking Pulse Detection Level VH 8.0 8.4 8.8 V Horizontal Blanking Input Current IH 1.5 2.5 4.0 mA ea 0.72 1.54 – VP–P A – 1.0 1.3 VP–P eR1 1.0 1.47 2.0 VP–P eG1 0.35 0.51 0.71 VP–P eB1 1.19 1.75 2.44 VP–P eKR – – 10 mV eKG – – 10 mV eKB – – 10 mV eCR – – 10 mV eCG – – 10 mV eCB – – 10 mV Color Control Voltage V3 4.1 4.6 5.1 V Color Control Range dV3 0.7 1.4 2.1 V Uni–Color Control Range eU 10.5 12.0 13.5 dB Uni–Color Control Voltage V8 4.1 4.6 5.1 V Uni–Color Control Range dV8 0.7 1.4 2.1 V Color Control Phase Change d0C – – 5 deg. Uni–Color Control Phase Change d0U – – 7 deg. Maximum Input of Bandpass Amplifier eM 0.48 0.6 – VP–P Tint Control Range d0 78 100 131 deg. Tint Control Range d01 35 55 – deg. d02 31 45 – deg. Tint Control Voltage V2 4.0 4.6 5.1 V Tint Control Voltage Range Chroma Section ACC Characteristics Demodulator Color Differential Output Color Killer Residual Color Control Residual dV2 0.25 0.5 0.75 V Sync Pulse Width St – 4.5 – µs Sync Pulse, High VS1 – 5.42 – V Sync Pulse, Low VS2 – 3.6 – V APC Frequency Control Sensitivity b – 7.0 – Hz/mV APC Pull–In Range fP – 1.3 – Hz fHld – 2.5 – Hz SEV1 – 4.0 – V SEV2 – 3.0 – V SEV 0.8 1.0 1.2 VP–P tE1 4 7 10 ms tE2 35 55 77 ms tE 39 62 87 ms eK 0.4 1.0 – mVP–P APC Hold Range Sweeper Amplitude Sweeper Period Killer Level AC Characteristics (Cont’d): (TA = +25°C, VCC = 9V, 6.8V unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit R.G.B 4.9 5.6 6.4 V Chroma Section (Cont’d) Demod Output DC Voltage Maximum Demod Output ER 3.9 4.6 5.9 VP–P EG 1.3 1.54 2.0 VP–P EB 3.9 4.6 5.9 VP–P R/B 0.71 0.84 0.97 G/B 0.23 0.29 0.35 R–B 102 109 116 deg. G–B 227 242 252 deg. ECR – – 300 mVP–P ECG – – 300 mVP–P ECB – – 300 mVP–P Pin57 Input Current IR57 – – 1 µA Sync Signal Delay Time tpdr 0 40 100 ns tpdf 0 60 100 ns Pin56 Terminal Voltage V56 5.2 5.7 6.2 V Pin56 Output Current IO56 2.0 3.0 4.9 µA Gate Pulse Width Tpw8 2.7 3.0 3.6 µs Gate Pulse Delay tpd8 0.2 0.4 0.6 µs Chroma Sweep Pulse Width Tcwt – 8H – Demod Relative Amplitude Demod Relative Phase Demod Output Residual Carrier Deflection Section Vertical Masking Pulse (Gate) 256.25H to 10.25H Vertical Masking Pulse (Horizontal AFC) 256.25H to 10.25H Vertical Sync Integrating Time Constants TVS 12 16 34 µs Vertical Retrace Pulse Width TVO55 10H / 11H Vertical Amp Gain GVA54 8.7 9.5 10.7 dB Vertical Amp Input Dynamic Range Vi55 1.1 1.6 – V Vertical Amp Output Dynamic Range VH55 5.1 6.2 7.3 V VL55 1.1 1.9 3.1 V IO54 11.2 16.8 25.0 mA Horizontal 32fH Oscillator Starting Voltage VCC581 1.7 2.0 2.5 V Horizontal Drive Output Starting Voltage VCC582 2.7 3.0 3.2 V Horizontal Drive Output Starting Current ICC58 4.0 5.4 6.8 mA fH 15654 15734 15814 Hz fH temperature Drift dfHT 40 70 100 Hz fH VCC Coefficient dfHV 0 –20 –40 Hz Horizontal Output Duty TO64 39 41 43 % Horizontal Output Saturation Voltage VOL64 0 0.2 0.3 V fH Pull–In Range dfpull ±550 ±750 ±880 Hz fH Hold Range dfhold ±550 ±750 ±880 Hz X’Ray Sense Voltage Vin1 1.1 1.3 1.5 V X’Ray Sense Current Iin1 0.05 0.4 1.0 µA Vertical Amp Maximum Output Current Horizontal Oscillator Frequency AC Characteristics (Cont’d): (TA = +25°C, VCC = 9V, 6.8V unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit V Deflection Section (Cont’d) X’Ray Protector Recovering Voltage VHold 1.0 1.4 1.7 Vertical Sync Pull–In Range fPV1 – 232.5H – fPV2 – 296.5H – Pin Connection Diagram X–Ray Protect Tint Control Color Control fSC VCO Killer Filter fSC VCO APC Filter Contrast Control R – Y Output G – Y Output B – Y Output GND –Y Output Pedestal Clamp Brightness 9V VCC V/C/D Bypass RF AGC Delay 9V VCC PIF PIF Input PIF Input PIF AGC Time Constant PIF AGC Time Constant GND QIF Input QIF Input QIF AGC Time Constant Preamp Output NFB Volume Control Audio Input FM Detector Tank 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 27 28 29 30 31 32 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 Horiz Driver Output 32fH VCO 32fH VCO 32fH VCO AFC Time Constant Flyback Pulse Input H VCC (6.8V) Sync Sep Input Sync Sep Time Constant Vertical NFB Vertical Output Video Input Differential Input Picture Sharpness GND Chroma Input ACC Filter Video Output RF AGC Output Video Detector Tank Video Detector Tank AFT Tank/Defeat AFT Output 4.5MHz Output GND I/C Detector I/C Detector 9V VCC Q–SIF SIF Input SIF Bias Detector Output FM Detector Tank 64 33 1 32 2.270 (57.65) Max .708 (18.0) Min .236 (6.0) Max .070 (1.78) .106 (2.7) Min .750 (19.0)