TDA3567 Ver la hoja de datos (PDF) - Philips Electronics

Número de pieza

componentes Descripción

Fabricante

TDA3567

NTSC decoder

Philips Electronics 

Philips Semiconductors

NTSC decoder

Product specification

TDA3567

PARAMETER

CONDITIONS

SYMBOL

MIN. TYP. MAX.

UNIT

Sandcastle input

Level at which the RGB

blanking is activated

Level at which burst gate

V7-17

1,0

1,5 2,0 V

clamping pulses are

separated

V7-17

6,5

7,0 7,5 V

Delay between black level

clamping and burst

gating pulse

td

300

375 450 ns

Input currents

V7-17 = 0 to 1 V

I7

V7-17 = 1 to 8,5 V I7

V7-17 = 8,5 to 12 V I7

−

−

−1

mA

−

−20 −40 µA

−

−

2

mA

Notes to the characteristics

1. Signal with negative going sync; amplitude includes sync pulse amplitude.

2. Indicated is a signal for colour bar with 75% saturation, so the chrominance to burst ratio is 2,2 : 1.

3. Nominal contrast is specified as maximum contrast −3 dB and nominal saturation as maximum saturation −10 dB.

4. Cross coupling is measured under the following condition:

- input signals nominal;

- contrast and saturation such that nominal output signals are obtained;

- the signals at the output at which no signal should be available must be compared with the nominal output signal

at that output.

5. The signal-to-noise ratio is specified as peak-to-peak signal with respect to RMS noise.

6. When this level is exceeded the amplifier of the output signal is reduced via a discharge of the capacitor on pin 7

(contrast control). Discharge current is 5,5 mA.

7. These matrixed values are found by measuring the ratio of the various output signals. The values are derived from

the matrix equations given in the section ‘FUNCTIONAL DESCRIPTION’.

June 1986

11

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