7115

NTE7115
Integrated Circuit
Color TV Horizontal Combination Circuit
Description:
The NTE7115 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 w/Double Slope Integrator
D Output Stage for Vertical Sync Pulse or Composite Sync Depending on the Load; Both are
Switched OFF at Muting
D ö1 Phase Control Between Horizontal Sync and Oscillator
D Coincidence Detector ö3 for Automatic Time Constant Switching; Overruled by the VCR Switch
D Time Constant Switch Between Two External Time Constants for Loop Gain; Both Controlled
by the Coincidence Detector ö3
D ö1 Gating Pulse Controlled by Coincidence Detector ö3
D Mute Circuit Depending on TV Transmitter Identification
D ö2 Phase Control Between Line Flyback and Oscillator; the Slicing Levels for ö2 Control and
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
Applications:
D Television Receivers
D Video Receivers
Rev. 8−10
Absolute Maximum Ratings:
Supply Voltage (Pin19), V15−5 = VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.2V
Voltages at:
(Pin1, Pin4, and Pin7), V1−5, V4−5, V7−5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
(Pin8, Pin13, and Pin18), V8−5, V13−5, V18−5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC
(Pin11 (Range)), V11−5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 to +6.0V
Currents at:
Pin1, I1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Pin2 (Peak Value), ±I2M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Pin4, I4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA
Pin6 (Peak Value), ±I6M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6mA
Pin7, I7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Pin8 (Range), I8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −5 to +1mA
Pin9 (Range), I9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −10 to +3mA
Pin18, ±I18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Total Power Dissipation, PTOT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800mW
Operating Ambient Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65° to +150°C
DC and AC Electrical Characteristics: (VCC = 12V, TA = +25°C unless otherwise specified)
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)
V11−5(P−P)
0.2
1.0
3.0
V
Sync Pulse Amplitude (Independent of
Video Content)
V11−5(P−P)
50
−
−
mV
Generator Resistance
RG
−
−
200
Ω
Input Current During
Video
I11
−
5
−
μA
Sync Pulse
−I11
−
40
−
μA
Black Level
−I11
−
25
−
μA
Composite Sync Generation, Pin10 (Horizontal Slicing Level at 50% of the Sync Pulse Amplitude)
Capacitor Current During
Video
Sync Pulse
I10
−
16
−
μA
−I10
−
170
−
μA
Vertical Sync Pulse Generation, Pin9 (Slicing Level at 30% (60% Between Black Level and Horizontal Slicing Level))
Output Voltage
V9−5
10
−
−
V
Pulse Duration
tp
−
190
−
μs
Delay With Respect to the Vertical Sync
Pulse (LeadinG Edge)
tD
−
45
−
μs
Pulse−Mode Control
Output Current for Vertical Sync
Pulse (Dual Integrated)
No Current Applied
at Pin9
Output Current for Horizontal and
Vertical Sync Pulse (Non−Integrated Separated Signal)
Current Applied Via a
15kΩ from VCC to Pin9
Horizontal Oscillator, Pin14 and Pin16
Free−Running Frequency
fOSC
−
15.625
−
kHz
Reference Voltage for fOSC
V14−5
−
6
−
V
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
ΔfOSC/ΔI14
−
31
−
Hz/μA
Adjustment Range of Circuit
ΔfOSC
−
±10
−
%
Spread of Frequency
ΔfOSC
−
−
5
%
−
±0.05
−
%
−
−
10
%
TC
−
−
±10−4
°C−1
−I16
−
1024
−
μA
I16
−
313
−
μA
tR
−
49
−
μs
tF
−
15
−
μs
−
−
0.5
V
Frequency Dependency (Excluding
Tolerance of External Components)
w/Supply Voltage
w/Supply
Voltage Drop of 5V
w/Temperature
Capacitor Current During:
Charging
Discharging
Sawtooth Voltage Timing (Pin14)
Rise Time
Fall Time
ΔfOSC/fOSC V = 12V
ΔV15−5/V15−5 CC
ΔfOSC
Horizontal Output Pulse, Pin4
Output Voltage, Low
V4−5
I4 = 30mA
Pulse Duration, High
tP
−
29 ±1.5
−
μs
Supply Voltage for Switching Off the
Output Pulse (Pin15)
VCC
−
4
−
V
Hysteresis for Switching On the Output
Pulse
ΔVP
−
250
−
mV
V17−5
3.55
−
8.3
V
−
−
1
μA
1.8
2.0
2.2
mA
−
8
−
mA
1.8
2.0
2.2
mA
Sϕ
6
−
−
kHz/μs
ΔfOSC
−
±680
−
Hz
−
±10
−
%
−
7.5
−
μs
9.5
−
2.0
V
2.0
−
9.5
V
−
−
3
mV
−
−
10
Ω
High
Impedance
−
−
Ω
Phase Compensation, ϕ1, Pin17
Control Voltage Range
Leakage Current
I17
Control Current:
for External Time Constant Switch
±I17
V17−5 = 3.55 to 8.3V
at V18−5 = V15−5 and V13−5 < 2V
or V13−5 > 9.5V
at V18−5 = V15−5 and V13−5 = 2 to 9.5V
Horizontal Oscillator Control
Control Sensitivity
Catching and Holding Range
Spread of Catching and Holding Range
Internal Keying Pulse
Time Constant Switch
Slow Time Constant
tP
V13−5
Fast Time Constant
Impedance Converter Offset Voltage
(Slow Time Constant)
Output Resistance
Slow Time Constant
Fast Time Constant
±V17−18
R18−5
V13−5 = 2.9 to 9.5V
DC and AC Electrical Characteristics (Cont’d): (VCC = 12V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
−
−
1
μA
−
−
1
V
Coincidence w/o Composite Video
Signal (Noise)
−
−
2
V
w/Coincidence w/Composite
−
6
−
V
I13
−
50
−
μA
−I13
−
300
−
μA
V13−5 = VCC−0.5V
−
−
100
μA
V13−5 = 0.5V (Average)
−
−
100
μA
tFP = 12μs, Note 2
−
2.6 ±0.7
−
μs
Phase Compensation, ϕ1, Pin17 (Cont’d)
Leakage Current
I18
Coincidence Detector, ϕ3, Pin13
Output Voltage
w/ Coincidence w/Composite Video
o
Signal
V13−5
w/
o
Signal
Video
Output Current
w/ Coincidence w/Composite Video
o
Signal
w/Coincidence w/Composite
Signal
Video
Switching Current
I13
I13(av)
Phase Comparison, ϕ2, Pin2 and Pin3 (Note 1)
Phase Relation Between Middle of the
Horizontal Sync Pulse and the Middle
of the Line Flyback Pulse
Δt
If Additional Adjustment is Required, it
can be Arranged by Applying a
Current at Pin3, such that for Applied
Current
ΔI/Δt
−
30
−
μA/μs
Switching Level for ϕ2 Comparison
V2−5
−
3
−
V
Switching Level for Horizontal Blanking
and Flyback Control
V2−5
−
0.3
−
V
Input Voltage Limiting
V2−5
−
−0.7
+4.5
−
V
0.01
1.0
−
mA
−
−
2.0
μA
−I2
−
−
500
μA
Control Current for ϕ2
±I3
−
1
−
mA
Control Range
Δtϕ2
−
19
−
μs
Δt/Δtd
−
−
0.2
%
I3
−
−
5
μA
Input for Line Flyback Pulse, Pin2
Switching Current
at Horizontal Flyback
I2
at Horizontal Scan
Maximum Negative Input Current
Phase Detector Output, Pin3
Static Control Error
Leakage Current
Note 1. Phase comparison between horizontal oscillator and the line flyback pulse. Generation of
a phase−modulated (ϕ2) horizontal output pulse with constant duration.
Note 2. tFP is the line flyback pulse duration.
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
V6−5
10
11
−
V
Pulse Duration
tp
3.7
4.0
4.3
μs
Phase Relation Between Middle of Sync
Pulse at the Input and the Leading
Edge of the Burst Gating Pulse
tϕ6
2.15
2.65
3.15
μs
Output Trailing Edge Current
I6
−
2
−
mA
V6−5
4.2
4.5
4.9
V
I6
−
2
−
mA
V6−5sat
−
−
0.5
V
2.15
2.5
3.0
V
V6−5 = 7V
Horizontal Blanking Pulse, Pin6 (Note 3)
Output Voltage
Output Trailing Edge Current
Saturation Voltage at Horizontal Scan
Clamping Circuit for Vertical Blanking Pulse, Pin6 (Note 3)
Output Voltage
V6−5
I6 = 2.8mA
Minimum Output Current
I6min
V6−5 > 2.15V
−
2.3
−
mA
Maximum Output Current
I6max
V6−5 < 3V
−
3.3
−
mA
−
−
1
V
7
−
−
V
TV Transmitter Identification, Pin12
Output Voltage
No TV Transmitter
V12−5
TV Transmitter Identified
Mute Output, Pin7
Output Voltage, No TV Transmitter
V7−5
I7 = 3mA
−
−
0.5
V
Output Resistance, No TV Transmitter
R7−5
I7 = 3mA
−
−
100
Ω
V12−5 > 3V
−
−
5
μA
−
6
−
V
−
8 ±0.8
−
V
−
4 ±0.4
−
V
V8−5 = 1 to 8.5V
−
60
−
μA
V8−5 > 8.5V
−
3
−
kΩ
−
10
−
μs
−
−
0.5
V
−
−
5
μA
Output Leakage Current,
TV Transmitter Identified
I7
Protection Circuit, Pin8 (Beam Current/EHT Voltage Protection)
No−Load Voltage (Operative Condition)
V8−5
Threshold
Positive−Going Voltage
V8−5
I8 = 0
Negative−Going Voltage
Current Limiting
±I8
Input Resistance
R8−5
Response Delay of Threshold Switch
td
Control Output of Line Flyback Pulse Condition, Pin1
Saturation Voltage at Standard Operation
V1−5sat
Output Leakage Current in Case of Break
in Transmission
I1
Note 3. Three−level sandcastle pulse.
I1 = 3mA
Pin Connection Diagram
18 Volt Fol Output
Control Out Line FB Pulse Control 1
FB Pulse Input 2
17 Phase Com
Phase Det 3
16 Horiz OSC
Horiz Output Pulse 4
15 VCC
GND 5
14 Horiz OSC
Burst Gating Pulse 6
13 Coin Det
12 TV Trans Ident
Mute Output 7
EHT Volt Protection 8
11 Comp Video In/Sync Sep
10 Comp Sync Gen
Vert Sync Pulse Gen 9
18
10
1
9
.870 (22.1) Max
.250
(6.35)
.150
(3.8)
.100 (2.54)
.800 (20.3)
.125 (3.17) Min