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Deflection Circuit. NTE7084 Datasheet

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Deflection Circuit. NTE7084 Datasheet
















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Part

NTE7084

Description

Integrated Circuit Color TV Sync Deflection Circuit



Feature


NTE7084 Integrated Circuit Color TV Sync Deflection Circuit Description: The NT E7084 is an IC containing not only the main functions required to achieve sync hronization and deflection in color tel evision receivers but also a generator of horizontal, vertical blanking pulses , and a generator of burst gate pulses (sandcastle type) in an 18–Lead DIP t ype package. This is.
Manufacture

NTE Electronics

Datasheet
Download NTE7084 Datasheet


NTE Electronics NTE7084

NTE7084; a multifunctional device ideally suited for use in color television receivers aiming at high–quality picture reprod uction. Functions: D Synchronizing Sepa ration D Vertical Oscillation D Vertica l Drive D Horizontal AFC D X–Ray Prot ection D Horizontal Oscillation D Sandc astle Pulse (Burst Gate Pulse + Horizon tal Blanking Pulse) D Composite Blankin g Pulse (Vertical + Ho.


NTE Electronics NTE7084

rizontal Blanking Pulse) Features: D Hor izontal and Vertical Oscillations are S table Against Variations in Ambient Tem perature and Supply Voltage due to Smal l Warm–Up Drift. D Small Variation in Horizontal Oscillation Frequency D Goo d Linearity and Interlace because DC Bi as at Vertical Output Stage is Subjecte d to Sampling Control Within Retrace Ti me. D Vertical Blank.


NTE Electronics NTE7084

ing Pulse Width can be set freely by Per ipheral Parts. D Minimized Picture Dist ortion because AFC Circuit is Defeated During Vertical Trigger Pulse Input Per iod. D Multifunctional and Compact Abso lute Maximum Ratings: (TA = +25°C unle ss otherwise specified) Maximum Supply Voltage, VCC14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .





Part

NTE7084

Description

Integrated Circuit Color TV Sync Deflection Circuit



Feature


NTE7084 Integrated Circuit Color TV Sync Deflection Circuit Description: The NT E7084 is an IC containing not only the main functions required to achieve sync hronization and deflection in color tel evision receivers but also a generator of horizontal, vertical blanking pulses , and a generator of burst gate pulses (sandcastle type) in an 18–Lead DIP t ype package. This is.
Manufacture

NTE Electronics

Datasheet
Download NTE7084 Datasheet




 NTE7084
NTE7084
Integrated Circuit
Color TV Sync Deflection Circuit
Description:
The NTE7084 is an IC containing not only the main functions required to achieve synchronization and
deflection in color television receivers but also a generator of horizontal, vertical blanking pulses, and
a generator of burst gate pulses (sandcastle type) in an 18–Lead DIP type package. This is a multi-
functional device ideally suited for use in color television receivers aiming at high–quality picture re-
production.
Functions:
D Synchronizing Separation
D Vertical Oscillation
D Vertical Drive
D Horizontal AFC
D X–Ray Protection
D Horizontal Oscillation
D Sandcastle Pulse (Burst Gate Pulse + Horizontal Blanking Pulse)
D Composite Blanking Pulse (Vertical + Horizontal Blanking Pulse)
Features:
D Horizontal and Vertical Oscillations are Stable Against Variations in Ambient Temperature and
Supply Voltage due to Small Warm–Up Drift.
D Small Variation in Horizontal Oscillation Frequency
D Good Linearity and Interlace because DC Bias at Vertical Output Stage is Subjected to Sampling
Control Within Retrace Time.
D Vertical Blanking Pulse Width can be set freely by Peripheral Parts.
D Minimized Picture Distortion because AFC Circuit is Defeated During Vertical Trigger Pulse Input
Period.
D Multifunctional and Compact
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Maximum Supply Voltage, VCC14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V
Maximum Current Dissipation, ICC18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16mA
Maximum Applied Voltage, V11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –6V
Allowable Power Dissipation (TA +65°C), PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 570mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +85°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C
Recommended Operating Conditions: (TA = +25°C unless otherwise specified)
Recommended Supply Voltage, VCC14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V




 NTE7084
Electrical Characteristics: (TA = +25°C, VCC14 = 12V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
VCC14 Current Dissipation
VCC18 Supply Voltage
Zener Bias Minimum Current
ICC14
VCC18
13.5 29.0 mA
11.8 13.2 V
– – 13 mA
Sync Separator Input DC Level
9.0 9.6 V
Sync Signal Peak Value
9.5 11.5 V
Burst Gate Pulse Peak Value (SCP)
9.5 11.5 V
Burst Gate Pulse Delay Time 1 (SCP)
Burst Gate Pulse Delay Time 2 (SCP)
Horizontal Blanking Pulse Peak Value (SCP)
TBR
TBF
– – 0.5 µs
3.6 4.2 µs
2.7 3.3 V
Horizontal Blanking Pulse Peak Value (CBP)
I = 1mA
12.7 13.5 V
Vertical Blanking Pulse Peak Value (CBP)
Load Resistance R = 33k
7.2 8.2 V
Vertical Frequency PullIn Range
Vertical Sync 60Hz
9.0 11.0 Hz
Vertical FreeRunning Frequency
Supply Voltage Dependence of Vertical
Frequency
fv VR1 = fv center 55Hz
V14 = 12V ±1V, 55Hz at 12V
50 60 Hz
0.5 0.5 Hz
Middle Point Control Threshold Level
3.8 4.4 V
Vertical Blanking Threshold Level
5.0 5.7 V
Vertical Oscillation Start Voltage
– –4 V
Temperature Characteristic of Vertical
Frequency
TA = 10° to +60°C
0.028 0.028 Hz/°C
Vertical Driver Amplification Factor
12 17 dB
Horizontal AFCD.C Loop Gain
Horizontal FreeRunning Frequency
Horizontal Oscillation Start Voltage
+sign at V1 = 5V,
sign at V1 = 1V
fH fH center 15.73kHz
±0.6 ±1.5 mA
750 750 Hz
– –4 V
Supply Voltage Dependence of Horizontal
Frequency
VZ VZ x 90%
50 50 Hz
Pin Connection Diagram
AFC Comparison
Sawtooth Wave Input
1
AFC Output 2
Time Constant Circuit 3
Horizontal Output 4
18 +VCC18 (Horizontal)
17
Composite Blanking
Pulse Output
16 Video Signal Input
(Positive)
15 Time Constant Circuit
Holddown Input 5
GND 6
Vertical Drive Output
Vertical Drive
Sawtooth Wave Input
Vertical Output
Middle Point Voltage
7
8
9
14 +VCC14 (Vertical)
13
Sandcastle Pulse
Output
12
Horiz, Vert Sync
Signal Output
11 Vertical Trigger Input
10 Time Constant Circuit




 NTE7084
18 10
1
.870 (22.1) Max
9
.250 (6.35)
.150
(3.8)
.100 (2.54)
.800 (20.3)
.125 (3.17) Min




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