NTE1296
Integrated Circuit
TV Chroma Processor/Demodulator
Features:
D No AGC or Killer Adjustment Necessary
D Transformerless VCO
Absolute Maximum Ratings: (TA = +25°C, unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Power Dissipation (TA = +65°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600mW
Operating Temperature Range, Topg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −15° to +65°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +125°C
Electrical Characteristics: (TA = +25°C, VCC = 12V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max
Unit
mA
Supply Current
ICC
Ec
EA
EK
µ
23.7 29.0 37.2
Max. Chroma Output
ACC Range
Burst:Chroma = 1:1, Burst = 90mVp−p 0.57 0.67 0.77
Burst:Chroma = 1:1, Burst = 10mVp−p 0.38 0.55 0.74
Vp−p
Vp−p
dB
Killer Threshold
Burst 90mVp−p = 0dB
−
−
−35
8
−
−
Phase Detector Sensitivity
VCO Control Sensitivity
APC Pull−In Range
Free−Running Frequency
VCO Output
Gate Pulse Width = 5µs
mV/deg
Hz/mV
Hz
β
−
4
−
fP
±300
−100
0.6
4.5
6.2
−
−
fo
Gate Off
0
100
Hz
V4
0.9 1.2
6.2
7.8 9.4
Vp−p
Vp−p
Max. Burst Output Voltage Eb(max) B−Y Output, f(beat) = 10kHz
−
Demod Conversion Gain
Demod Conversion Ratio
Gr−y
R−Y Output
Eb−y/Er−y B−Y Output, R−Y Output
1.19 1.33 1.47
0.32 0.37 0.42
Eg−y/Er−y (R−y) − (B−Y) = 100deg.
G−Y/R−Y Output
ecar1
No Signal Input measured with
3.58MHz BPF
−
−
0.2
Vp−p
Demod Carrier Leakage
ecar2
eK1
1.2Vp−p CW input measured with BPF
−
−
−
−
−
3.5
1
Vp−p
mVrms
mVrms
V
Color Killer Leakage
Bursy:Chroma = 1:1
Rainbow Color Bar
Color Control Leakage
Demod. DC Output Voltage
ec1
−
1
Eo(dc)
No signal input, VCO free−running
6.4
7.0 7.6
Differential Demod
Output Voltage
∆Eo(dc) No signal input, VCO free−running
(B−Y) − (R−Y), (R−Y) − (G−Y),
(G−Y) − (B−Y)
−0.2
0
0.2
V