TDA3565 Просмотр технического описания (PDF) - Philips Electronics
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TDA3565 Datasheet PDF : 12 Pages
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Philips Semiconductors
PAL decoder
Product specification
TDA3565
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
Frequency response of total luminance/
RGB amplifier circuits for 0 to 5 MHz
−
−
−3
dB
Sandcastle pulse detector
Level at which RGB blanking is activated
Level at which burst gate and clamping
V7-17
1,0
1,5
2,0
V
pulse are separated
Delay between black level clamping and
burst gating pulse
Input current at:
V7-17 = 0 to 1 V
V7-17 = 1 to 8,5 V
V7-17 = 8,5 to 12 V
V7-17
I7
I7
I7
6,5
7,0
−
0,4
−
−
−
20
−
−
7,5
V
−
µs
−1
mA
40
µA
2
mA
Notes to the characteristics
1. At nominal contrast and nominal brightness.
2. Signal with negative-going sync pulse, amplitude includes sync pulse amplitude.
3. The signal indicated is for a colour bar with 75% saturation, so the chroma burst ratio of 2,2 : 1.
4. Nominal contrast is defined as (maximum contrast −3 dB) and nominal saturation is (maximum saturation −12 dB).
5. Cross coupling is measured under the following condition; input signals nominal and contrast/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 signal at that output.
6. The signal-to-noise ratio is specified as peak-to-peak signal with respect to r.m.s. noise.
7. These signal amplitudes are determined by the a.c.c. circuit of the reference part.
8. When this level is exceeded the amplitude of the output signal is reduced via a discharge of the capacitor at pin 6
(contrast control). The discharge current is 5,5 mA.
April 1986
8
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