NTE7045
Integrated Circuit
Horizontal Signal Processing Circuit
for CRT Displays
Features:
DProcessing for both Negative and Positive Sync. Signal
DWide Horizontal Oscillation Frequency Range: 14kHz to 60kHz
DWide Output Pulse Width Selection: 2µs to 40µs
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC 13.2V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply Current, ICC 50mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation, PD1140mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Ambient Temperature Range, Topr –20° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, Tstg –40° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (TA = +25°C unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Total Circuit Current Itot VCC = 11V 30 45 60 mA
Polarity Changeover Voltage V2–7 Positive Polarity Signal Input 0 – 0.4 V
Negative Polarity Signal Input 2.5 – 5.5 V
Horizontal OSC Starting Voltage Vosc–s (H) fHO = 12kHz to 19kHz 7.5 – – V
Horizontal OSC Frequency fHO(1) VCC = 11V, C = 4400pf 15.0 15.75 16.5 kHz
Horizontal OSC Enable
Frequency fHO(2) VCC = 11V, C = 820pf, 5600pf 14 – 60 kHz
fHO Change with Supply Voltage ∆fHO/VCC fHO = 15.75kHz,
fHO |9.9V – fHC| 12.1V – 40 130 Hz
fHO Change with Ambient
Temperature ∆fHO/TAfHO = 15.75kHz,
fHO |–20°C – fHO| +60°C– – 260 Hz
OSC Frequency Control
Sensitivity β ∆IO = ±25µA 16.0 17.6 19.3 Hz/µA
Electrical Characteristics (Cont’d): (TA = +25°C unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
DC Loop Gain fDC µ x β–700 –Hz/µs
Output Pulse Width τHO(1) VCC = 11V, R = 20kΩ,
C = 6800pf 17.8 19.4 21.2 µs
Output Enable Pulse Width τHO(2) VCC = 11V, R = 20kΩ,
C = 330pf, 18000pf 2–40 µs
Output Pulse Width Supply
Voltage Change ∆τHO/VCC VCC = 9.9V to 12.1V – – 5 %
Output Pulse Width Temperature
Change ∆τHO/TAVCC = 11V, TA = –20° to +60°C– – 5 %
OSC Output Saturation Voltage V8–7VCC = 11V, V10–7 = 1V – – 2 V
OSC Output Driving Current V8–7VCC = 11V, V10–7 = 1V 300 – – mA
X–Ray Protection Circuit
Operation Starting Voltage V6–7VCC = 11V 0.5 0.64 0.75 V
VCC
Pin Connection Diagram
(Front View)
Pulse Width Adjust
Sawtooth Wave Gen
X–Ray Protect Input
Polarity Switch
H–Drive Output
Trigger Input
AFC Output
10
9
8
7
6
5
4
3
2H–Sync Input
1
12
11
FBK Pulse Input
GND
Ref Voltage for H–OSC Circuit
.311
(7.9)
1.157 (29.4) .150 (3.81)
112
.100 (2.54) Typ
.184
(4.7)
1.100 (27.9)
