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TDA4685 Datasheet, PDF (13/24 Pages) NXP Semiconductors – Video processor with automatic cut-off control | |||
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Philips Semiconductors
Video processor with automatic cut-off control
Product speciï¬cation
TDA4685
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP. MAX. UNIT
RGB outputs (pins 24, 22 and 20; positive going output signals; peak drive limiter set = 3FH); note 4
Vo(b-w)
nominal output signals
(black-to-white value)
â
2.0
â
V
maximum output signals
(black-to-white value)
3.0
â
â
V
âVo
spread between RGB output signals
Vo
minimum output voltages
maximum output voltages
â
â
â
â
6.8
â
10
%
0.8
V
â
V
V24,22,20
voltage of cut-off measurement line
equivalent to voltage during
ultra-black
output clamping;
BCOF = 1
2.3
2.5
2.7
V
Iint
internal current sources
Ro
output resistance
â
5.0
â
mA
â
20
â
â¦
Frequency response
fres
frequency response of Y path
f = 10 MHz
(from pin 8 to pins 24, 22 and 20)
â
â
3
dB
frequency response of CD path
(from pins 7 to 24 and 6 to 20)
f = 8 MHz
â
â
3
dB
frequency response of RGB1 path
(from pins 10 to 24, 11 to 22 and
12 to 20)
f = 10 MHz
â
â
3
dB
frequency response of RGB2 path
(from pins 2 to 24, 3 to 22 and
4 to 20)
f = 10 MHz
â
â
3
dB
Sandcastle pulse detector (pin 14)
CONTROL BIT SC5 = 0; 3-LEVEL; notes 5 and 6
V14
sandcastle pulse voltage
for horizontal and vertical blanking
pulses
for horizontal pulses (line count)
for burst key pulses (clamping)
CONTROL BIT SC5 = 1; 2-LEVEL; notes 5 and 6
V14
sandcastle pulse voltage
for horizontal and vertical blanking
pulses
for burst key pulses
GENERAL
I14
output current
td
leading edge delay of the clamping
pulse
V14 = 0 V
2.0
2.5
4.0
4.5
7.6
â
3.0
V
5.0
V
VP + 5.8 V
2.0
2.5
4.0
4.5
â
â
â
1.5
3.0
V
VP + 5.8 V
â100 µA
â
µs
1997 Jun 20
13
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