NTE1890 Datasheet, PDF (3/6 Pages) NTE Electronics – Integrated Circuit NTSC Decoder for TV

Electrical Characteristics (Cont’d): (V_P = V_1–23 = 12V, T_A = +25°C unless otherwise specified)
Parameter
Symbol
Min Typ Max Unit
Reference Part (ACC Generation, Pin22)
Control Voltage at Nominal Input Signal
Control Voltage without Chrominance Input
Color–Off Voltage
Color–On Voltage
Change in Burst Amplitude with Supply Voltage
V_2–23
V_2–23
V_2–23
V_2–23
– 5.3 –
V
– 2.8 –
V
– 3.4 –
V
– 3.6 –
V
Independent
Voltage at Pin4 at Nominal Input Signal
Reference Part (Hue Control)
V_4–23
– 5.2 –
V
Control Range
±50 –
– deg
Demodulator Part
Input Burst Signal Amplitude (Peak–to–Peak Value, Pin17)
Input Impedance (Pin17, Note 7)
Ratio of Demodulated Signals (B–Y)/(R–Y)
Ratio of Demodulated Signals (G–Y)/(R–Y); No (B–Y) Signal
Ratio of Demodulated Signals (G–Y)/(B–Y); No (R–Y) Signal
Frequency Response Between 0 and 1MHz
V_{17–23(p–p)}
|Z_17–23|
V_15–23/V_13–23
V_14–23/V_13–23
V_14–23/V_15–23
– 320 – mV
–
2
– kΩ
– 1.1 –
– 0.26 –
– 0.22 –
–
– –3 dB
Crosstalk Between Color Difference Signals
40 –
– dB
RGB Matrix and Amplifiers
Output Voltage at Nominal Input Signal
(Peak–to–Peak value, Black–to–White, Note 3)
V_{13, 14, 15–23(p–p)} –
5
–
V
Output Voltage at Pin13 at Nominal Contrast/Saturation and
No Luminance Signal to (R–Y) (Peak–to–Peak Value)
V_{13–23(p–p)}
– 5.25 –
V
Maximum Peak–White Level (Note 8)
Maximum Output Current (Pin13, Pin14, Pin15)
Output Black Level Voltage for a Brightness Control Voltage
at Pin12 of 2V
V_{13, 14, 15–23}
I_{13, 14, 15}
V_{13, 14, 15–23}
9.0 9.3 9.6 V
–
– 10 mA
– 2.7 –
V
Black Level Shift with Vision Contents
–
– 40 mV
Brightness Control Input Current
Variation of Black Level with Temperature
Variation of Black Level with Contrast
I₁₂
∆V/∆T
∆V
–
–
5 µA
– 0.35 1.0 mV/K
– 10 100 mV
Relative Spread Between the R, G and B Output Signals
–
– 10 %
Relative Black–Level Varition Between the Three Channels During
Variation of Contrast, Brightness and Supply Voltage
–
0 20 mV
Differential Black–Level Drift Over a Temperature Range of 40°C
–
0 20 mV
Note 3. Nominal contrast is specified as the maximum contrast –3dB and nominal saturation as the
maximum saturation –6dB.
Note 7. These signal amplitudes are determined by th ACC circuit of the reference part.
Note 8. If the typical voltage for this white level is exceeded, the output voltage is reduced by dis-
charging the capacitor at Pin7 (contrast control); discharge current is 1.5mA.