NTE NTE1297

NTE1297
Integrated Circuit
TV Color Signal Processor/Demodulator
Description:
The NTE1297 is an integrated circuit consisting of an NTSC color signal processor and demodulator
circuit. APC color synchronization and DC color−phase control is employed to ensure stability.
Features:
D Peak−type ACC Detector
D Internal Setting of ACC and Color Killer Levels
D APC System uses Sample and Hold for Color Synchronization
D Detector Circuit has Output Temperature Characteristics
Absolute Maximum Ratings: (TA = +25°C, unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V
Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4W
Derating (TA ≥ 25°C), Kθ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14mW/°C
Operating Temperature Range, Topg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +125°C
Electrical Characteristics: (TA = +25°C, VCC = 12V unless otherwise specified)
Test Conditions
Parameter
Symbol
Color
Signal
Input (dB)
Pin 2
Voltage
(V)
Pin 8
Voltage
(V)
Min
Typ
Max
Unit
Circuit Current
ICC
Off
6
6
27
38
49
mA
Color Signal Max. Gain
Gc
−22
8
6
36
42
47
dB
Color Signal Max. Output
Vcmax
0
8
6
0.9
1.25
1.6
Vp−p
ACC Control Range (Note 1)
RACC
−
6
6
−18
−
−
dB
Electrical Characteristics (Cont’d): (TA = +25°C, VCC = 12V unless otherwise specified)
Test Conditions
Color
Signal
Input (dB)
Pin 2
Voltage
(V)
Pin 8
Voltage
(V)
VI(K)
−
6
Color Saturation
Characteristics
C
0
Color Phase Characteristics
T
APC Pull−In Range
Parameter
Symbol
Min
Typ
Max
Unit
Killer Operational Input Level
6
−46
−37
−28
dB
4 to 8
6
40
−
−
dB
0
5.5
4 to 8
−
90
−
Deg.
Fp
0
6
6
±400
−
−
Hz
Output Voltage
EODC
Off
6
6
6.6
7.0
7.4
VDC
Output Offset Voltage
∆EODC
Off
6
6
−
−
0.3
VDC
δEODC/δT
Off
6
6
−2
0
2
mV/
°C
Eomax
0
8
6
4
−
−
Vp−p
ECO
0
−
6
3
4
5
Vp−p
Eo(R−Y)/
Eo(B−Y)
0
−
6
−
0.81
−
Eo(G−Y)/
Eo(B−Y)
0
−
6
−
0.32
−
θR−Y
0
5.5
6
−
106
−
Deg.
θB−Y
0
5.5
6
−
259
−
Deg.
Output Voltage
Temp. Coefficient
Max. Demodulation
Output Voltage (Note 2)
B−Y Demodulation
Sensitivity (Note 2,3)
Demodulated Output
Voltage Ratio (Note 2,4)
Demodulated Phase Angle
Note *. Color Input signal consists of 50mVp−p burst portion and 100mVp−p color portion, treated as
0dB levels (frequency = 3.579545MHz ± 5Hz)
Note 1. ACC control range is the input level when color output voltage is decreased by 3dB,
compared with color output voltage which occurs with a 0dB color input signal.
Note 2. Color portion frequency = 3.50MHz.
Note 3. For color signal output voltage of 0.5Vp−p
Note 4. For color signal output voltage of 0.3Vp−p
Pin Connection Diagram
GND
Color Saturation
Control
Burst Gate Pulse
Input
APC Filter
1
22 Color Signal Input
2
21 Bypass
3
20 ACC Filter
4
19 Killer Filter
APC Filter
5
18 Color Signal Output
Quartz Control
6
17 B − Y Signal Input
Quartz Control
7
16 R − Y Signal Input
Color Phase Control 8
Color Subcarrier
9
Output
B − Y Subcarrier 10
Input
R − Y Subcarrier 11
Input
22
15
VCC
14 B − Y Output
13 R − Y Output
12 G − Y Output
12
.410
(11.41)
1
11
.400
(10.16)
1.300 (33.0)
.216
(5.5)
.100 (2.54)
1.000 (25.4)
.110 (2.79)