NTE7086
Integrated Circuit
Sync Deflection Circuit for CRT Display
Description:
The NTE7086 is a sync
deflection circuit IC in a 20Lead DIP type package dedicated to CRT display
use. This device can be connected to the NTE1773/NTE1797 (for vertical output use) to form a
sync
deflection circuit that meets every requirement for CRT display use.
So far, IC's for color TV use have been applied to the sync
deflection circuit for CRT display use and
generalpurpose IC's such as oneshot multivibrators, inverters, and a lot of transistors have been
used to form the peripherals such as the sync input interface and horizontal phase shifter.
The NTE7086 contains these peripherals on chip and adopts a stable circuit for horizontal oscillation
from 15kHz to 100kHz aiming at improving the characteristics required for CRT display use.
Features:
D
The Horizontal Oscillation Frequency can be Adjusted Stably from 15kHz to 100kHz.
D
The Horizontal Display can be Shifted Right/Left.
D
The Horizontal/Vertical Sync Input can be used intact Regardless of the Difference in Pulse
Polarity and Pulse Width.
D
The AFC Feedback Sawtooth Wave can be Obtained by Simply Applying a Flyback Pulse to
the IC as a Trigger Pulse.
D
Any Duty of the Horizontal Pulse Can be Set.
D
Good Linearity because DC Bias at Vertical Output Stage is Subjected to Sampling Control
within Retrace Time.
OnChip Functions:
Horizontal Block
D
AFC
D
Horizontal OSC
D
XRay Protector
D
Horizontal Phase Shifter
D
AFC Sawtooth Wave Generator
D
Horizontal Pulse Duty Setting
Vertical Block
D
Vertical OSC
D
Vertical Sawtooth Wave Generator
D
Sampling Type DC Voltage Control
Absolute Maximum Ratings: (T
A
= +25
C unless otherwise specified)
Maximum Supply Voltage, V
10
max, V
20
max
14V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Allowable Power Dissipation (T
A
+65
C), P
D
max
780mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
opr
20
to +85
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
55
to +125
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Operating Conditions: (T
A
= +25
C unless otherwise specified)
Operating Voltage Range, V
10
opr, V
20
opr
9.0V to 13.5V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Supply Voltage, V
10
, V
20
12V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (T
A
= +25
C, V
CC
10 = V
CC
20 = 12V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Current Dissipation
I
10
V
CC
10
12
30
mA
I
20
V
CC
20
5
12
mA
Vertical Frequency PullIn Range
V
pin
Vertical Sync 60Hz
10
12
Hz
Vertical FreeRunning Frequency
fv
f
V
center 55Hz
50
60
Hz
with Increased/Reduced Voltage
f
Vv
V
20
= 12V
1V
0.5
0.5
Hz
Characteristic of Vertical Frequency
MiddlePoint Voltage Control
55Hz at 12V
3.8
4.4
V
Threshold Level
Vertical OSC Start Voltage
4.0
V
Temperature Coefficient of Amplitude
T
A
= 10
to +60
C
0.028
0.028 Hz/
C
Frequency
12
18
dB
Vertical Driver Amplification Factor (V
GV
)
with Horizontal AFC Loop Current
I
AFC
1.0
1.9
mA
Horizontal FreeRunning Frequency
f
H
f
H
center 15.734kHz
750
750
Hz
Horizontal OSC Start Voltage
4
V
with Increased/Reduced Voltage
f
Hv
V
10
= 12V
1V
50
50
Hz
Characteristic od Horizontal Frequency
with Temperature Characteristic of
Horizontal Frequency
15.735kHz at 12V,
T
A
= 10
to +60
C
2.9
2.9
Hz/
C
Comparison Wave Generation Input
V
4
0.6
0.9
V
Operating Voltage
Holddown Operation Start Voltage
V
13
0.5
0.8
V
Horizontal Drive Current
I
12
6.0
12.0
mA
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