NTE NTE7045

NTE7045
Integrated Circuit
Horizontal Signal Processing Circuit
for CRT Displays
Features:
D Processing for both Negative and Positive Sync. Signal
D Wide Horizontal Oscillation Frequency Range: 14kHz to 60kHz
D Wide 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, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1140mW
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
Total Circuit Current
Polarity Changeover Voltage
Horizontal OSC Starting Voltage
Symbol
Itot
V2–7
Test Conditions
Min
Typ
Max
Unit
VCC = 11V
30
45
60
mA
Positive Polarity Signal Input
0
–
0.4
V
Negative Polarity Signal Input
2.5
–
5.5
V
7.5
–
–
V
Vosc–s (H) fHO = 12kHz to 19kHz
Horizontal OSC Frequency
fHO(1)
VCC = 11V, C = 4400pf
Horizontal OSC Enable
Frequency
fHO(2)
VCC = 11V, C = 820pf, 5600pf
fHO Change with Supply Voltage
∆fHO/VCC fHO = 15.75kHz,
fHO |9.9V – fHC| 12.1V
fHO Change with Ambient
Temperature
∆fHO/TA
OSC Frequency Control
Sensitivity
β
fHO = 15.75kHz,
fHO |–20°C – fHO| +60°C
∆IO = ±25µA
15.0 15.75 16.5
kHz
14
–
60
kHz
–
40
130
Hz
–
–
260
Hz
16.0
17.6
19.3 Hz/µA
Electrical Characteristics (Cont’d): (TA = +25°C unless otherwise specified)
Parameter
Symbol
DC Loop Gain
fDC
Test Conditions
µxβ
Min
Typ
Max
Unit
–
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
–
–
5
%
VCC = 11V, TA = –20° to +60°C
–
–
5
%
∆τHO/VCC VCC = 9.9V to 12.1V
Output Pulse Width Supply
Voltage Change
Output Pulse Width Temperature
Change
∆τHO/TA
OSC Output Saturation Voltage
V8–7
VCC = 11V, V10–7 = 1V
–
–
2
V
OSC Output Driving Current
V8–7
VCC = 11V, V10–7 = 1V
300
–
–
mA
X–Ray Protection Circuit
Operation Starting Voltage
V6–7
VCC = 11V
0.5
0.64
0.75
V
Pin Connection Diagram
(Front View)
12 Ref Voltage for H–OSC Circuit
11 Sawtooth Wave Gen
10 Pulse Width Adjust
9 Trigger Input
8 H–Drive Output
7 GND
6 X–Ray Protect Input
5 V
CC
4 AFC Output
3 FBK Pulse Input
2 Polarity Switch
1 H–Sync Input
.150 (3.81)
1.157 (29.4)
1
12
.311
(7.9)
.184
(4.7)
.100 (2.54) Typ
1.100 (27.9)