Horizontal Vertical Deflection Monitor Features: Direct Line Darl

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Horizontal Vertical Deflection Monitor Features: Direct Line Darl

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NTE1888 Integrated Circuit
Horizontal Vertical Deflection Monitor
Features: Direct Line Darlington Drive Direct Frame Yoke Drive Composite Video Signal Input Capability Frame Output Protection Against Short Circuits Description: NTE1888 both horizontal vertical deflection circuit 16-Lead package. Absolute Maximum Ratings: Supply Voltage VCC1 Flyback Generator Supply Voltage Frame Power Supply Voltage Frame Output Current, Non-Repetitive ±1.5A Continuous ±1.0A Line Output Voltage (External), Line Output Peak Current, IP14 0.8A Line Output Continuous Current, IC14 0.4A Storage Temperature Range, Tstg -40° +150°C Maximum Operating Junction Temperature, +150°C Maximum Thermal Resistance, Junction-to-Case, RthJC 15°C/W Typical Thermal Resistance, Junction-to-Ambient, RthJA (soldered 35µm thick 45cm2 board copper area) 45°C/W Maximum Recommended Junction Temperature, +120°C Electrical Characteristics: +25°C unless otherwise specified)
Parameter Supply Current Supply Voltage Voltage Variation Starting Threshold Line Output Pulses Symbol ICC1 VCC1 VCC1 Test Conditions Pin16 ICC1 15mA ICC1 10mA20mA -280 10.5 +280 Unit
Electrical Characteristics (Cont'd): +25°C unless otherwise specified)
Parameter Reference Voltage Minimum Width Frame Pulse (when synchronized with signal) Threshold Voltage High Threshold Voltage Bias Current Discharge Impedance Free Running Line Period Symbol Test Conditions Pin15 -1µA 1.75 Unit
FLP1 FLP2
Pin9
34.9k Vcc1, 2.2nF 13.7k, 2.2nF
23.0 12.8
1.05 25.0
Hz/°C
Oscilator Threshold Line Output Pulse Triggering Horizontal Frequency Drift w/Temperature Saturation Voltage Output Pulse Width Bias Voltage Input Impedance Output Current During Synchro Pulse Current Ratio Leakage Current Control Range Voltage Threshold Voltage High Threshold Voltage Bias Current Discharge Impedance Free Running Frame Period Minimum Frame Period
LV14 RI10 LI10 CV10 FFP1 Pin1 845k Vcc1, 180nF -100µA, 845k Vcc1, 180nF 408k, 220nF Note Between Pin1 Non-Inverting input Frame Amplifier Pin1 Pin7
w/Flyback
Pin14
200mA Line Period 64µs
Pin11
Pin10 Positive/Negative
0.95
Pin1
20.5
Free Running Frame Period Frame Period Ratio Frame Sawtooth Gain
FFP2
14.3 -0.4
Vertical Frequency Drift w/Temperature Operating Voltage
Generator
4.1-3
Hz/°C
Note Frame Period Ratio
Electrical Characteristics (Cont'd): +25°C unless otherwise specified)
Parameter Supply Current Operating Voltage Saturation Voltage Symbol LV8A LV8B Saturation Voltage Saturation Voltage Flyback Mode Flyback Transistor (Output High State) HV8A HV8B FV8A FV8B F2DA F2DB FSVA FSVB Flyback Transistor (Output Pin2 Pin3 Pin2 Pin3, Pin7 Pin2 Pin8 80V, 0.1A 80V, 30V, -0.1A 30V, 0.1A V2/3 with 0.1A V2/3 with V3/2 with 0.1A V3/2 with 0.1A 30V, Leakage Current Pin2 Test Conditions 0.06 0.37 Unit
Note Frame Period Ratio
Application Notes: NTE1888 performs video power functions required provide signals direct drive line darlington frame yoke. contains: shunt regulator synchronization separator integrated frame separator without external components saw-tooth generator frame power amplifier direct drive frame yoke (short circuit protected) open collector output line darlington drive line phase detector voltage control oscillator Synchronization Separator slice level sync separation fixed value external resistors controlled internally fixed voltage. Frame Separator sync-pulse allows discharge external capacitor current. Capacitor discharge held VZ/2, frame sync pulse permits complete discharge capcitor provide current other parts circuit. Line Oscillator oscillator thresholds internally fixed resistors. discharge capacitor depends internal resistor. Phase Comparator sync-pulse drives current comparator. line flyback integrated external network gives sawtooth Pin11. comparator output provides positive current part signal Pin11 greater than negative current other part. When line flyback video signal synchronized, output comparator alternatively negative positive current. frame sync-pulse inhibits comparator prevent frequency drift line oscillator frame beginning.
Application Notes (Cont'd): Line Output (Pin14) open collector output which able drive pulse current 800mA rapid discharging darlington base. output pulse time 22µs 64µs period. Frame Oscillator oscillator thresholds internally fixed resistors. oscillator synchronized during last half free period. input current during charge capacitor less than 100nA. Frame Output Amplifier This amplifier able directly drive frame yoke. output short circuit overload protected; contains also thermal protection
Connection Diagram Frame Flyback Generator Supply Frame Flyback Input Frame Power Supply Frame Output VCC1 Video Input Line Output Line Flyback Phase Detector Line
.870 (22.0)
.260 (6.6) .200 (5.08)
.100 (2.54) .700 (17.78)
.099 (2.5)

Horizontal Vertical Deflection Monitor Features: Direct Line Darl

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