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NTE1888 Integrated Circuit
Horizontal and Vertical Deflection Monitor
Features: D Direct Line Darlington Drive D Direct Frame Yoke Drive ( 1A) D Composite Video Signal Input Capability D Frame Output Protection Against Short Circuits D PLL Description: The NTE1888 is both a horizontal and a vertical deflection circuit in one 16-Lead DIP package. Absolute Maximum Ratings: Supply Voltage VCC1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V Flyback Generator Supply Voltage V2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V Frame Power Supply Voltage V7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60V Frame Output Current, I8 Non-Repetitive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0A Line Output Voltage (External), V14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60V Line Output Peak Current, IP14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8A Line Output Continuous Current, IC14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.4A Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +150C Maximum Operating Junction Temperature, Tj . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150C Maximum Thermal Resistance, Junction-to-Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15C/W Typical Thermal Resistance, Junction-to-Ambient, RthJA (soldered on a 35m thick 45cm2 PC board copper area) . . . . . . . . . . . . . . . . . . . . . . 45C/W Maximum Recommended Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +120C Electrical Characteristics: (TA = +25C unless otherwise specified)
Parameter Supply Current Supply Voltage Voltage Variation Starting Threshold for Line Output Pulses Symbol ICC1 VCC1 VCC1 LPS Test Conditions @ Pin16 ICC1 = 15mA ICC1 = 10mA20mA Min 10 9.0 -280 - Typ - 9.8 50 - Max 20 10.5 +280 5 Unit mA V mV V
Electrical Characteristics (Cont'd): (TA = +25C unless otherwise specified)
Parameter Reference Voltage Minimum Width of Frame Pulse (when synchronized with TTL signal) Low Threshold Voltage High Threshold Voltage Bias Current Discharge Impedance Free Running Line Period Symbol V15 MWF Test Conditions @ Pin15 I15 = -1A Min 1.4 50 Typ 1.75 - Max 2.0 - Unit V s
LT9 HT9 BI9 DR9 FLP1 FLP2
@ Pin9
2.8 6.4 - 1.0 R = 34.9k to Vcc1, C = 2.2nF to GND R = 13.7k, C = 2.2nF 62 - - -
3.2 6.6 100 1.4 64 27 4.6 2 1.1 22 2.4 5.8 450 1.0 - - 2.0 3.1 30 470 23.0 12.8
3.6 7.8 - 1.8 66 - - - 1.6 24 3.2 8.0 800 1.05 +2 7.1 2.3 3.6 - 700 25.0 -
V V nA k s s V Hz/C V s V k A
Oscilator Threshold for 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 Low Threshold Voltage High Threshold Voltage Bias Current Discharge Impedance Free Running Frame Period Minimum Frame Period
OT9 DF LV14 OPW V11 Z11 I10 RI10 LI10 CV10 LT1 HT1 BI1 DR1 FFP1 MFP @ Pin1 R = 845k to Vcc1, C = 180nF to GND I15 = -100A, R = 845k to Vcc1, C = 180nF to GND R = 408k, C = 220nF Note 1 Between Pin1 and Non-Inverting input of the Frame Amplifier @ Pin1 @ Pin7
w/Flyback
@ Pin14
I14 = 200mA Line Period = 64s
- 20 1.8 4.5
@ Pin11
@ Pin10 Positive/Negative
250 0.95 -2 2.6
A V V V nA W ms ms
@ Pin1
1.6 2.6 - 300 20.5 -
Free Running Frame Period Frame Period Ratio Frame Sawtooth Gain
FFP2 FPR FG
- 1.7 -
14.3 1.8 -0.4
- 1.9 -
ms
Vertical Frequency Drift w/Temperature Operating Voltage
DF V7
- Generator 10
4.1-3 -
- 58
Hz/C V
Note 1. Frame Period Ratio =
FFP MFP
Electrical Characteristics (Cont'd): (TA = +25C unless otherwise specified)
Parameter Supply Current Operating Voltage Saturation Voltage to GND Symbol I7 V2 LV8A LV8B Saturation Voltage to V7 Saturation Voltage to V7 in Flyback Mode Flyback Transistor ON (Output = High State) HV8A HV8B FV8A FV8B F2DA F2DB FSVA FSVB Flyback Transistor OFF (Output = V7 - V8) FCI @ Pin2 & Pin3 @ Pin2 & Pin3, V2 = 30V @ Pin7 @ Pin2 @ Pin8 V7 = 80V, I8 = 0.1A V7 = 80V, I8 = 1A V7 = 30V, I8 = -0.1A V7 = 30V, I8 = -1A V8 > V7, I8 = 0.1A V8 > V7, I8 = 1A V2/3 with I3 2 = 0.1A V2/3 with I3 2 = 1A V3/2 with I2 3 = 0.1A V3/2 with I2 3 = 0.1A V7 = V2 = 30V, Leakage Current Pin2 Test Conditions V7 = 30V Min - 10 - - - - - - - - - - - Typ - - 0.06 0.37 1.3 1.7 1.6 2.5 1.5 3.0 0.8 2.2 - Max 22 30 0.6 1.0 1.6 2.4 2.1 4.5 2.1 4.5 1.1 4.5 170 Unit mA V V V V V V V V V V V A
Note 1. Frame Period Ratio =
Application Notes: The NTE1888 performs all the video and power functions required to provide signals for the direct drive of the line darlington and frame yoke. It contains: D A shunt regulator D A synchronization separator D An integrated frame separator without external components D A saw-tooth generator for the frame D A power amplifier for direct drive of frame yoke (short circuit protected) D An open collector output for the line darlington drive D A line phase detector and a voltage control oscillator Synchronization Separator The slice level of sync separation is fixed by the value of external resistors controlled by an internally fixed voltage. Frame Separator The sync-pulse allows the discharge of the external capacitor by a 2 x I current. Capacitor discharge is held by VZ/2, and a frame sync pulse permits the complete discharge of the capcitor to provide current for the other parts of the circuit. Line Oscillator The oscillator thresholds are internally fixed by resistors. The discharge of the capacitor depends on a internal resistor. Phase Comparator The sync-pulse drives the current in the comparator. The line flyback integrated by the external network gives a sawtooth on Pin11. The comparator output provides a positive current for the part of the signal on Pin11 greater than VCC and a negative current for the other part. When the line flyback and the video signal are synchronized, the output of the comparator is an alternatively negative and positive current. The frame sync-pulse inhibits the comparator to prevent frequency drift of the line oscillator on the frame beginning.
FFP MFP
Application Notes (Cont'd): Line Output (Pin14) It is an open collector output which is able to drive a pulse current of 800mA for a rapid discharging of the darlington base. The output pulse time is 22s for a 64s period. Frame Oscillator The oscillator thresholds are internally fixed by resistors. The oscillator is synchronized during the last half free run period. The input current during the charge of the capacitor is less than 100nA. Frame Output Amplifier This amplifier is able to directly drive the frame yoke. Its output is short circuit and overload protected; it contains also thermal protection
Pin Connection Diagram Frame OSC 1 Flyback Generator Supply 2 Frame Flyback 3 GND 4 GND 5 INV Input 6 Frame Power Supply 7 Frame Output 8 16 VCC1 15 Video Input 14 Line Output 13 GND 12 GND 11 Line Flyback 10 Phase Detector 9 Line OSC
16
9
1
8
.870 (22.0) Max
.260 (6.6) Max .200 (5.08) Max
.100 (2.54) .700 (17.78)
.099 (2.5) Min

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