NTE1890 データシートの表示（PDF） - NTE Electronics

部品番号

コンポーネント説明

メーカー

NTE1890

Integrated Circuit NTSC Decoder for TV

NTE Electronics 

Electrical Characteristics (Cont’d): (VP = V1–23 = 12V, TA = +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

V2–23

V2–23

V2–23

V2–23

– 5.3 –

V

– 2.8 –

V

– 3.4 –

V

– 3.6 –

V

Independent

Voltage at Pin4 at Nominal Input Signal

Reference Part (Hue Control)

V4–23

– 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

V17–23(p–p)

|Z17–23|

V15–23/V13–23

V14–23/V13–23

V14–23/V15–23

– 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)

V13, 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)

V13–23(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

V13, 14, 15–23

I13, 14, 15

V13, 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.

Share Link: