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NTE7115
Integrated Circuit
Color TV Horizontal Combination Circuit
Description:
The NTE71115 is a monolithic integrated circuit in a 18–Lead DIP type package designed for use in
color television receivers.
Features:
D Positive Video Input: Capacitively Coupled (Source Impedance < 200Ω)
D Adaptive Sync Separator: Slicing Level at 50% of Sync Amplitude
D Internal Vertical Pulse Separator
D Output Stage for Vertical Sync Pulse or Composite Sync Depending on the Load; Both are
Switched OFF at Muting
D ö
D Coincidence Detector ö
Phase Control Between Horizontal Sync and Oscillator
1
for Automatic Time Constant Switching; Overruled by the VCR Switch
3
D Time Constant Switch Between Two External Time Constants for Loop Gain; Both Controlled
by the Coincidence Detector ö
D ö
Gating Pulse Controlled by Coincidence Detector ö
1
D Mute Circuit Depending on TV Transmitter Identification
D ö
Phase Control Between Line Flyback and Oscillator; the Slicing Levels for ö2 Control and
2
Horizontal Blanking can be set Separately
D Burst Keying and Horizontal Blanking Pulse Generation, in Combination with Clamping of the
Vertical Blanking Pulse (Three–Level Sandcastle)
D Horizontal Drive Output with Constant Duty Cycle Inhibited by the Protection Circuit or the
Supply Voltage Sensor
D Detector for Too Low Supply Voltage
D Protection Circuit for Switching Off the Horizontal Drive Output Continuously if the Input Voltage
is Below 4V or Higher than 8V
D Line Flyback Control Causing the Horizontal Blanking Level at the Sandcastle Output Continuously
in Case of a Missing Flyback Pulse
D Spot Suppressor Controlled by the Line Flyback Control
w
/Double Slope Integrator
3
3
Applications:
D Television Receivers
D Video Receivers
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Absolute Maximum Ratings:
Supply Voltage (Pin19), V
15–5
= V
CC
Voltages at:
(Pin1, Pin4, and Pin7), V
(Pin8, Pin13, and Pin18), V
(Pin11 (Range)), V
11–5
1–5
, V
8–5
4–5
, V
, V
13–5
Currents at:
Pin1, I
Pin2 (Peak Value), ±I
Pin4, I
Pin6 (Peak Value), ±I
Pin7, I
Pin8 (Range), I
Pin9 (Range), I
Pin18, ±I
Total Power Dissipation, P
1
2M
4
6M
7
8
9
18
TOT
Operating Ambient Temperature Range, T
Storage Temperature Range, T
stg
A
7–5
, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18–5
13.2V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
CC
–0.5 to +6.0V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
100mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–5 to +1mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–10 to +3mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
800mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–0° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–65° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC and AC Electrical Characteristics:
Parameter Symbol Test Conditions Min Typ Max Unit
Composite Video Input and Sync Separator, Pin11 (Internal Black Level Determination)
Input Signal (Positive Video; Standard
Signal; Peak–to–Peak Value)
Sync Pulse Amplitude (Independent of
Video Content)
Generator Resistance R
Input Current During
Video
Sync Pulse –I
Black Level –I
Composite Sync Generation, Pin10 (Horizontal Slicing Level at 50% of the Sync Pulse Amplitude)
Capacitor Current During
Video
Sync Pulse –I
Vertical Sync Pulse Generation, Pin9 (Slicing Level at 30% (60% Between Black Level and Horizontal Slicing Level))
Output Voltage V
Pulse Duration t
Delay With Respect to the V ertical Sync
Pulse (LeadinG Edge)
Pulse–Mode Control
Output Current for Vertical Sync
Pulse (Dual Integrated)
(VCC = 12V, TA = +25°C unless otherwise specified)
V
11–5(P–P)
V
11–5(P–P)
I
11
I
10
10
9–5
p
t
D
G
11
11
0.2 1.0 3.0 V
50 – – mV
– – 200 Ω
– 5 – µA
– 40 – µA
– 25 – µA
– 16 – µA
– 170 – µA
10 – – V
– 190 – µs
– 45 – µs
No Current Applied
at Pin9
Output Current for Horizontal and
Vertical Sync Pulse (Non–Inte-
grated Separated Signal)
Horizontal Oscillator, Pin14 and Pin16
Free–Running Frequency f
Reference Voltage for f
OSC
V
OSC
14–5
Current Applied Via a
15kΩ from V
– 15.625 – kHz
– 6 – V
to Pin9
CC
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DC and AC Electrical Characteristics (Cont’d): (VCC = 12V, TA = +25°C unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Horizontal Oscillator, Pin14 and Pin16 (Cont’d)
Frequency Control Sensitivity ∆f
Adjustment Range of Circuit ∆f
Spread of Frequency ∆f
OSC
/∆I
OSC
OSC
14
– 31 – Hz/µA
– ±10 – %
– – 5 %
Frequency Dependency (Excluding
Tolerance of External Components)
w
/Supply Voltage
w
/Supply Voltage Drop of 5V ∆f
w
/Temperature TC – – ±10
∆f
OSC/fOSC
∆V
15–5/V15–5
OSC
VCC = 12V – ±0.05 – %
– – 10 %
Capacitor Current During:
Charging
Discharging I
–I
16
16
– 1024 – µA
– 313 – µA
Sawtooth Voltage Timing (Pin14)
Rise Time
Fall Time t
t
R
F
– 49 – µs
– 15 – µs
Horizontal Output Pulse, Pin4
Output Voltage, Low V
Pulse Duration, High t
Supply Voltage for Switching Off the
V
4–5
P
CC
I4 = 30mA – – 0.5 V
– 29 ±1.5 – µs
– 4 – V
Output Pulse (Pin15)
Hysteresis for Switching On the Output
∆V
P
– 250 – mV
Pulse
Phase Compensation, ϕ1, Pin17
–4
°C
–1
Control Voltage Range V
Leakage Current I
Control Current:
for External Time Constant Switch
at V
or V
at V
18–5
13–5
18–5
= V
15–5
> 9.5V
= V
15–5
and V
and V
< 2V
13–5
= 2 to 9.5V 1.8 2.0 2.2 mA
13–5
17–5
17
±I
17
V
= 3.55 to 8.3V – – 1 µA
17–5
3.55 – 8.3 V
1.8 2.0 2.2 mA
– 8 – mA
Horizontal Oscillator Control
Control Sensitivity
Catching and Holding Range ∆f
S
ϕ
OSC
6 – – kHz/µs
– ±680 – Hz
Spread of Catching and Holding Range – ±10 – %
Internal Keying Pulse t
P
V
= 2.9 to 9.5V – 7.5 – µs
13–5
Time Constant Switch
Slow Time Constant
V
13–5
9.5 – 2.0 V
Fast Time Constant 2.0 – 9.5 V
Impedance Converter Offset Voltage
±V
17–18
– – 3 mV
(Slow Time Constant)
Output Resistance
Slow Time Constant
Fast Time Constant
R
18–5
– – 10 Ω
High
Impedance
– – Ω
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DC and AC Electrical Characteristics (Cont’d): (VCC = 12V, TA = +25°C unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Phase Compensation, ϕ1, Pin17 (Cont’d)
Leakage Current I
Coincidence Detector, ϕ3, Pin13
Output Voltage
w
/o Coincidence w/Composite Video
V
13–5
Signal
w
/o Coincidence w/o Composite Video
Signal (Noise)
w
/Coincidence w/Composite Video
Signal
Output Current
w
/o Coincidence w/Composite Video
I
Signal
w
/Coincidence w/Composite Video
–I
Signal
Switching Current I
I
13(av)
Phase Comparison, ϕ2, Pin2 and Pin3 (Note 1)
Phase Relation Between Middle of the
∆t tFP = 12µs, Note 2 – 2.6 ±0.7 – µs
Horizontal Sync Pulse and the Middle
of the Line Flyback Pulse
If Additional Adjustment is Required, it
∆I/∆t – 30 – µA/µs
can be Arranged by Applying a
Current at Pin3, such that for Applied
Current
Input for Line Flyback Pulse, Pin2
18
13
13
13
– – 1 µA
– – 1 V
– – 2 V
– 6 – V
– 50 – µA
– 300 – µA
V
= VCC–0.5V – – 100 µA
13–5
V
= 0.5V (Average) – – 100 µA
13–5
Switching Level for ϕ2 Comparison V
Switching Level for Horizontal Blanking
2–5
V
2–5
– 3 – V
– 0.3 – V
and Flyback Control
Input Voltage Limiting V
2–5
– –0.7
– V
+4.5
Switching Current
at Horizontal Flyback
I
2
0.01 1.0 – mA
at Horizontal Scan – – 2.0 µA
Maximum Negative Input Current –I
2
– – 500 µA
Phase Detector Output, Pin3
Control Current for ϕ
2
Control Range ∆t
Static Control Error ∆t/∆t
Leakage Current I
±I
3
ϕ
2
d
3
– 1 – mA
– 19 – µs
– – 0.2 %
– – 5 µA
Note 1. Phase comparison between horizontal oscillator and the line flyback pulse. Generation of
) horizontal output pulse with constant duration.
2
Note 2. t
a phase–modulated (ϕ
is the line flyback pulse duration.
FP
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DC and AC Electrical Characteristics (Cont’d): (VCC = 12V, TA = +25°C unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Burst Gating Pulse, Pin6 (Note 3)
Output Voltage V
Pulse Duration t
Phase Relation Between Middle of Sync
t
6–5
p
ϕ
6
V
= 7V 2.15 2.65 3.15 µs
6–5
10 11 – V
3.7 4.0 4.3 µs
Pulse at the Input and the Leading
Edge of the Burst Gating Pulse
Output Trailing Edge Current I
6
– 2 – mA
Horizontal Blanking Pulse, Pin6 (Note 3)
Output Voltage V
Output Trailing Edge Current I
Saturation Voltage at Horizontal Scan V
6–5
6
6–5sat
4.2 4.5 4.9 V
– 2 – mA
– – 0.5 V
Clamping Circuit for Vertical Blanking Pulse, Pin6 (Note 3)
Output Voltage V
Minimum Output Current I
Maximum Output Current I
6–5
6min
6max
I6 = 2.8mA 2.15 2.5 3.0 V
V
> 2.15V – 2.3 – mA
6–5
V
< 3V – 3.3 – mA
6–5
TV Transmitter Identification, Pin12
Output Voltage
No TV Transmitter
V
12–5
– – 1 V
TV Transmitter Identified 7 – – V
Mute Output, Pin7
Output Voltage, No TV Transmitter V
Output Resistance, No TV Transmitter R
Output Leakage Current,
7–5
7–5
I
7
I7 = 3mA – – 0.5 V
I7 = 3mA – – 100 Ω
V
> 3V – – 5 µA
12–5
TV Transmitter Identified
Protection Circuit, Pin8 (Beam Current/EHT Voltage Protection)
No–Load Voltage (Operative Condition) V
Threshold
Positive–Going Voltage
8–5
V
8–5
I8 = 0 – 6 – V
– 8 ±0.8 – V
Negative–Going Voltage – 4 ±0.4 – V
Current Limiting ±I
Input Resistance R
Response Delay of Threshold Switch t
8
8–5
d
V
= 1 to 8.5V – 60 – µA
8–5
V
> 8.5V – 3 – kΩ
8–5
– 10 – µs
Control Output of Line Flyback Pulse Condition, Pin1
Saturation V oltage at Standard Operation V
Output Leaka g e Current in Case of Break
1–5sat
I
1
I1 = 3mA – – 0.5 V
– – 5 µA
in Transmission
Note 3. Three–level sandcastle pulse.
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Pin Connection Diagram
Control Out Line FB Pulse Control
FB Pulse Input
Phase Det
Horiz Output Pulse
Vert Sync Pulse Gen
1
2
3
4
5GND
6Burst Gating Pulse
7Mute Output
8EHT Volt Protection
9
18 10
18
Volt Fol Output
Phase Com
17
16
Horiz OSC
15
V
CC
14 Horiz OSC
13 Coin Det
TV Trans Ident
12
11
Comp Video In/Sync Sep
Comp Sync Gen
10
19
.870 (22.1) Max
.250
(6.35)
.150
(3.8)
.100 (2.54) .125 (3.17) Min
.800 (20.3)
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