NTE738
Integrated Circuit
Color TV Processing Circuit
Description:
The NTE738 is a chroma IF amplifier with automatic chroma control, color killer, dc chroma control,
and injection lock reference system followed by dc hue control.
Features:
D
Minimum Number of External Components required
D
DC Control of both Chroma Amplitude and Hue Shift
D
Crystal鈥揅ontrolled Internal Feedback Oscillator
D
Built鈥搃n Noise Immunity
D
Schmitt Trigger Color Killer
D
Automatic Chroma Control
D
Internal Burst Gate and Gate Pulse Shaping Circuit
D
High Oscillator Lock鈥搃n Sensitivity
D
Built鈥搃n Supply Regulation
Absolute Maximum Ratings:
(T
A
= +25擄C unless otherwise specified)
Power Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35mA
Horizontal Pulse Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250碌A(chǔ) Peak
Power Dissipation (Package Limitation), P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625mW
Derate above T
A
= +25擄C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0mW/擄C
Operating Temperature Range (Ambient), T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?0擄 to +75擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +150擄C
Electrical Characteristics:
(V
CC
= +20V, R
S
= 390鈩? T
A
= +25擄C unless otherwise specified)
Parameter
Regulated Voltage
I
S
= 35mA
I
S
= 27mA
Maximum Undistorted Chroma Output
Maximum Chroma Gain
Automatic Chroma Control Range (ACC)
Chroma Burst Level to Kill
Manual Chroma Gain Control Range
E
(Pin3)
= E
(Pin14)
, Note 1
E
(Pin3)
= E
(Pin14)
, Note 1
鈥?dB Down from Maximum Undistorted
Output, Note 1
Note 1
鈭哣
(Pin3)
V
(Pin14)
to 0V
Test Conditions
Min
9.0
鈥?/div>
34
34
鈥?/div>
鈥?/div>
50
Typ
9.6
9.2
40
40
19
1.4
60
Max
11.5
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Unit
V
V
dB
dB
dB
mV
P鈥揚(yáng)
dB
Note 1. With 5.0mV
(p鈥損)
burst input at pin 5 set E
(pin 10)
to just 鈥渦nkill鈥?
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