NTE7001 Integrated Circuit Horizontal Combination Circuit for Color TV & Computer Monitors

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Amberlynn Lester
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1 NTE7001 Integrated Circuit Horizontal Combination Circuit for Color TV & Computer Monitors Description: The NTE7001 is a monolithic integrated circuit in a 16 Lead DIP type package intended for use in color television receivers. Features: Horizontal Oscillation Based on the Threshold Switching Principle Phase Comparasion Between Sync Pulse and Oscillator Voltage (ϕ 1 ) Internal Key Pulse for Phase Detector (ϕ 1 ) (Additional Noise Limiting) Phase Comparison Between Line Flyback Pulse and Oscillator Volatge (ϕ 2 ) Larger Catching Range Obtained by Coincidence Detector (ϕ 3 ; Between Sync and Key Pulse) Switch for Changing the Filter Characteristic and the Gtae Circuit (VCR Operation) Sync Separator Noise Separator Vertical Sync Separator and Output Stage Color Burst Keying and Line Flyback Blanking Pulse Generator Phase Shifter for the Output Pulse Output Pulse Duration Switching Output Stage with Separate Supply Voltage for Direct Drive of Thyristor Deflection Circuits Low Supply Voltage Protection Applications: Video Monitors TV Receivers Absolute Maximum Ratings: Supply Voltage at Pin1 (Voltage Source), V V at Pin2, V V Voltages Pin4, V V Pin9, ±V V Pin10, ±V V Pin11, V V

2 Absolute Maximum Ratings (Cont d): Currents Pin2 and Pin3 (Thyristor Driving, Peak Value), I 2M, I 3M mA Pin2 and Pin3 (Transistor Driving, Peak Value), I 2M, I 3M mA Pin4, I mA Pin6, ±I mA Pin7, I mA Pin11, I mA Total Power Dissipation, P TOT mW Operating Ambient Temperature Range, T A to +70 C Storage Temperature Range, T stg C to +125 C DC and AC Electrical Characteristics: (V CC = 12V, T A = +25 C unless otherwise specified) Sync Separator Input Switch Voltage V V Input Keying Current I µa Input Leakage Current I 9 V 9 16 = 5V 1 µa Input Switching Current I 9 5 µa Switch OFF Current I µa Input Signal (Peak to Peak Value) V 9 16(P P) Note V Noise Separator Input Switching Voltage V V Input Keying Current I µa Input Switching Current I µa Input Leakage Current I 10 V = 5V 1 µa Input Signal (Peak to Peak Value) V 10 16(P P) Note V Permissible Superimposed Noise Signal (Peak to Peak Value) Line Flyback Pulse V 10 16(P P) 7 V Input Current I ma Input Switching Voltage V V Input Limiting Voltage V V Switching on VCR Input Voltage V to 2.5 V 9 to V 1 16 V Input Current I µa Pulse Duration Switch [t = 7µs (Thyristor Driving)] I 11 2 ma Input Voltage V to V 1 16 V Input Current I µa Pulse Duration Switch [t = 14µs + t D (Transistor Driving)] Input Voltage V V Input Current I µa Note 1. Permissible Range 1V to 7V.

3 Pulse Duration Switch (t = 0, V 3 16 = 0 or Input Pin4 Open) Input Voltage V V Input Current I µa Vertical Sync Pulse (Positive Going) Output Voltage (Peak to Peak Value) V 8 16(P P) V Output Resistance R 8 2 kω Delay Between Leading Edge of Input t ON 15 µs and Output Signal Delay Between Trailing Edge of Input and Output Signal t OFF t ON µs Burst Gating Pulse (Positive Going) Output Voltage (Peak to Peak Value) V 7 16(P P) V Output Resistance R 7 70 Ω Pulse Duration t p V 7 16 = 7V 3.7 Phase Relation Between Middle of Sync Pulse at the Input and the Leading Edge of the Burst Gating Pulse t V 7 16 = 7V µs Output Trailing Edge Current I 7 2 ma Line Flyback Blanking Pulse (Positive Going) Output Voltage (Peak to Peak Value) V 7 16(P P) 4 5 V Output Resistance R 7 70 Ω Output Trailing Edge Current I 7 2 ma Line Drive Pulse (Positive Going) Output Voltage (Peak to Peak Value) V 3 16(P P) 10.5 V Output Resistance for Leading Edge of R Ω Line Pulse Output Resistance for Trailing Edge of R 3 20 Ω Line Pulse Pulse Duration (Thyristor Driving) t p V 4 16 = 9.4 to V 1 16 V µs Pulse Duration (Transistor Driving) t p V 4 16 = 0 to 4V, t FP = 12µs, 14 + t D µs Note 2 Supply Voltage for Switching OFF the Output Pulse V V Overall Phase Relation Phase Relation Between Middle of Sync Pulse and the Middle of the Flyback Pulse t Note µs Tolerance of Phase Relation t 0.7 µs The Adjustment of the Overall Phase Relation and Consequently the Leading Edge of the Line Drive Occurs Automatically by Phase Control ϕ 2. If Additional Adjustment is Applied it can be Arranged by Current Supply at Pin5. I 5 / t 30 µa/µs Note 2. t D = Switch OFF Delay of Line Output Stage. Note 3. Line Flyback Pulse Duration t FP = 12µs. µs µs

4 Oscillator Threshold Voltage Low Level V V Threshold Voltage High Level V V Discharge Current ±I ma Frequency; Free Running f O C OSC = 4.7nF, R OSC = 12kΩ khz Spread of Frequency f O /f O Note 4 < ±5 % Frequency Control Sensitivity f O / I Hz/µA Adjustment Range of Network in Circuit f O /f O ±10 % Influence of Supply Voltage on Frequency Change of Frequency when V 1 16 Drops to 5V Temperature Coefficient of Oscillator Frequency f O /f O Note 4 < ±0.05 % V/V NOM f O Note 4 < ±10 % Note 4 < ±10 4 Hz/ C Phase Comparison ϕ 1 Control Voltage Range V V Control Current (Peak Value) ±I 13M ma Output Leakage Current I 13 V = 4 to 8V 1 µa Output Resistance R 13 V = 4 to 8V, Note 5 High Ohmic V < 3.8V or > 8.2V, Note 6 Low Ohmic Control Sensitivity 2 khz/µs Catching and Holding Range f 82kΩ Between Pins 13 and 15 ±780 Hz Spread of Catching and Holding Range ( f) Note 4 ±10 % Phase Comparison ϕ 2 and Phase Shifter Control Voltage range V V Control Current (Peak Value) ±I 5M 1 ma Output Resistance R 5 V 5 16 = 5.4 to 7.6V, Note 7 High Ohmic V 5 16 < 5.4 or > 7.6V 8 kω Input Leakage Current I 5 V 5 16 = 5.4 to 7.6V 5 µa Permissible Delay Between Leading Edge of Output Pulse and Leading Edge of Flyback Pulse t D t FP = 12µs 15 µs Static Control Error t/ t D 0.2 % Coincidence Detector ϕ 3 Output Voltage V V Output Current (Peak Value) I 11M Without Coincidence 0.1 ma Time Constant Switch I 11M With Coincidence 0.5 ma Output Voltage V V Output Current (Limited) ±I 12 1 ma Output Resistance R 12 V = 2.5 to 7V 0.1 kω V < 1.5V or > 9V 60 kω

5 Internal Gating Pulse Pulse Duration t p 7.5 µs Note 4. Excluding External Component Tolerances. Note 5. Current Source. Note 6. Emitter Follower. Note 7. Current Source. Pin Connection Diagram V CC 1 16 GND Trigger Pulse Input 2 15 OSC Frequency Adjust Line Pulse Output 3 14 OSC Cap Input Pulse Duration Switch Phase Shifter FB Pulse Input Blank Pulse Output Phase Detector 1 12 Time Constant Switch 11 VCR Switch/ Coincidence Detector 10 Noise Separator Vertical Sync Pulse Output 8 9 Video Input (6.6) Max (19.9) Max.300 (7.62).200 (5.08) Max.245 (6.22) Min.100 (2.54).700 (17.7)

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