NTE NTE7045 Datasheet
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:
Supply Voltage, V
Supply Current, I
Power Dissipation, P
CC
CC
D
(TA = +25°C unless otherwise specified)
Operating Ambient Temperature Range, T
Storage Temperature Range, T
Electrical Characteristics:
Parameter Symbol Test Conditions Min Typ Max Unit
Total Circuit Current I
Polarity Changeover Voltage V
Horizontal OSC Starting Voltage V
Horizontal OSC Frequency f
Horizontal OSC Enable
Frequency
stg
(TA = +25°C unless otherwise specified)
tot
2–7
osc–s (H)fHO
HO(1)
f
HO(2)
13.2V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1140mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
opr
–20° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–40° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VCC = 11V 30 45 60 mA
Positive Polarity Signal Input 0 – 0.4 V
Negative Polarity Signal Input 2.5 – 5.5 V
= 12kHz to 19kHz 7.5 – – V
VCC = 11V, C = 4400pf 15.0 15.75 16.5 kHz
VCC = 11V, C = 820pf, 5600pf 14 – 60 kHz
fHO Change with Supply Voltage ∆fHO/V
fHO Change with Ambient
Temperature
OSC Frequency Control
Sensitivity
∆fHO/TAfHO = 15.75kHz,
β ∆IO = ±25µA 16.0 17.6 19.3 Hz/µA
CCfHO
f
HO
f
HO
= 15.75kHz,
|9.9V – fHC| 12.1V
|–20°C – fHO| +60°C
– 40 130 Hz
– – 260 Hz
Electrical Characteristics (Cont’d): (TA = +25°C unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
DC Loop Gain f
Output Pulse Width τ
Output Enable Pulse Width τ
Output Pulse Width Supply
∆τHO/V
Voltage Change
Output Pulse Width Temperature
∆τHO/TAVCC = 11V, TA = –20° to +60°C – – 5 %
Change
OSC Output Saturation Voltage V
OSC Output Driving Current V
X–Ray Protection Circuit
Operation Starting Voltage
DC
HO(1)
µ x β – 700 – Hz/µs
VCC = 11V, R = 20kΩ,
C = 6800pf
HO(2)
VCC = 11V, R = 20kΩ,
C = 330pf, 18000pf
CCVCC
8–7
8–7
V
6–7
Pin Connection Diagram
= 9.9V to 12.1V – – 5 %
VCC = 11V, V
VCC = 11V, V
VCC = 11V 0.5 0.64 0.75 V
(Front View)
12
Ref Voltage for H–OSC Circuit
11
Sawtooth Wave Gen
10
Pulse Width Adjust
Trigger Input
9
H–Drive Output
8
7
GND
6
X–Ray Protect Input
5
V
CC
AFC Output
4
3
FBK Pulse Input
2
Polarity Switch
H–Sync Input
1
17.8 19.4 21.2 µs
2 – 40 µs
= 1V – – 2 V
10–7
= 1V 300 – – mA
10–7
1.157 (29.4)
112
.100 (2.54) Typ
1.100 (27.9)
.150 (3.81)
.311
(7.9)
.184
(4.7)
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