
1997 Nov 26
8
Philips Semiconductors
Product specification
Three gain control video pre-amplifier for OSD
TDA4884
10 CHARACTERISTICS
V
P
= 8.0 V; T
amb
= 25
°
C; all voltages measured with respect to GND (pin 4); unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
P
I
P
supply voltage (pin 7)
supply current (pin 7)
7.2
36
8.0
48
8.8
60
V
mA
Video signal inputs (pins 2, 5 and 8)
V
i(b-w)
input voltage (black-to-white
value; pins 2, 5 and 8)
DC voltage during input clamping
(artificial black + V
BE
)
DC input current
0.7
1.0
V
V
I(clamp)
note 1
2.8
3.1
3.4
V
I
I
no clamping; V
I
= V
I(clamp)
;
T
amb
=
20 to +70
°
C
during clamping;
V
I
= V
I(clamp)
+ 0.7 V
during clamping;
V
I
= V
I(clamp)
0.7 V
0.05
+0.05
+0.250
μ
A
50
75
120
μ
A
50
75
120
μ
A
Contrast control (pin 6);
note 2
V
i(CC)
V
i(CC)(max)
V
i(CC)(nom)
I
i(CC)
C
OSD(min)
nom
input voltage
maximum input voltage
input voltage for nominal contrast
input current
minimum contrast for OSD
contrast relative to nominal
contrast
1.0
5
2.4
4.3
1
40
3.4
6.0
V
P
1
0.1
V
V
V
μ
A
dB
dB
note 3
V
i(CC)
= 4.3 V
V
i(CC)
= 0.7 V
V
i(CC)
= 6.0 V; pins 3, 1 and
11 open-circuit
V
i(CC)
= 1.0 V; pins 3, 1 and
11 open-circuit
pins 3, 1 and 11 open-circuit
1 V < V
i(CC)
< 6 V; note 4
26
22
19
dB
V
i(CC)(min)
G
track
input voltage for minimum contrast
tracking of output signals of
channels 1, 2 and 3
delay between leading (falling)
edges of contrast voltage and
voltage output waveforms
delay between trailing edges
(rising) of contrast voltage and
voltage output waveforms
fall time of voltage output
waveform
0.7
0
0.5
V
dB
t
df(C)
V
i(CC)
= 4.3 V to 0.7 V; input
fall time at pin 6:
t
f(CC)
= 2 ns; note 5; Fig.7
V
i(CC)
= 0.7 V to 4.3 V; input
rise time at pin 6:
t
r(CC)
= 2 ns; note 5; Fig.7
90% to 10% amplitude;
input fall time at pin 6:
t
f(CC)
= 2 ns; note 5; Fig.7
10% to 90% amplitude;
input rise time at pin 6:
t
r(CC)
= 2 ns; note 5; Fig.7
7
20
ns
t
dr(C)
15
25
ns
t
f(C)
6
15
ns
t
r(C)
rise time of voltage output
waveform
6
15
ns
C