NTE1890 データシートの表示（PDF） - NTE Electronics
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NTE1890 Datasheet PDF : 6 Pages
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NTE1890
Integrated Circuit
NTSC Decoder for TV
Description:
The NTE1890 is a monolithic integrated decoder for the NTSC color television standards. It combines
all functions required for the demodulation of NTSC signals. Further more it contains a luminance
amplifier, an RGB–matrix and amplifier. These amplifiers supply output signals up to 5V peak–to–
peak (picture information) enabling direct drive of the discrete output stages.
Absolute Maximum Ratings:
Maximum Supply Voltage (Pin1), VP = V1–23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.2V
Maximum Total Power Disipation, Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.7W
Operating Ambient Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25° to +65°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25° to +150°C
Thermal Resistance, Junction–to–Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50K/W
Electrical Characteristics: (VP = V1–23 = 12V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Min Typ Max Unit
Supply (Pin1)
Supply Voltage
Supply Current
Total Power Dissipation
Luminance Amplifier (Pin9)
VP = V1–23
IP = I1
Ptot
8.0 12.0 13.2 V
– 85 – mA
– 1.0 – W
Input Voltage (Peak–to–Peak Value, Note 1)
Input Level Before Clipping
Input Current
Contrast Control Range
V9–23(p–p)
V9–23
I9
– 450 – mV
–
–
2
V
– 0.15 1.0 µA
–17 – +3 dB
Control Voltage for an Attenuation of 40dB
– 1.2 –
V
Input Current Contrast Control
Peaking of Luminance Signal
I7
–
– 15 µA
Output Impedance (Pin10)
Ratio of Internal/External Current when Pin10 is Short–Circuited
|Z10–23|
– 200 –
Ω
–
3
–
Control Voltage for Peaking Adjustment (Pin11)
Input Impedance (Pin11)
V11–23
|Z11–23|
– 2.4 –
V
– 10 – kΩ
Note 1. Signal with the negative–going sync; amplitude includes sync amplitude.
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