
1997 Nov 26
10
Philips Semiconductors
Product specification
Three gain control video pre-amplifier for OSD
TDA4884
Current outputs (pins 20, 17 and 14);
note 13
I
o(b-w)
output current (black-to-white
value)
0
50
20
100
2.0
2.2
900
mA
mA
V
V
μ
A
with peaking
I
o
= 50 mA
I
o
= 100 mA
V
i(HBL)
= V
P
; R
O
= 33
V
20-19
;
V
17-16
; V
14-13
start of HF-saturation voltage of
output transistors
I
bl(SO)
output current during switch-off
Frequency response at voltage outputs;
note 14
G
(f)
gain decrease by frequency
response at pins 19, 16 and 13
t
r(O)
rise time at voltage output (pins 19,
16 and 13)
dV
O
overshoot of output signal pulse
related to actual output pulse
amplitude
70 MHz; single channel
1.3
3
dB
10% to 90% amplitude;
input rise time = 1 ns
single channel;
input rise time = 2.5 ns;
V
i(b-w)
= 0.7 V;
V
i(CC)
= 4.3 V; pins 3, 1
and 11 open-circuit
4.1
5.0
ns
4
8
%
Crosstalk at voltage outputs with speed up circuit;
note 15
α
cr(tr)
transient crosstalk
20
dB
Threshold voltages for clamping, blanking and switch-off (pins 9 and 10);
note 16
V
i(HBL)
input voltage at pin HBL
threshold for horizontal blanking
(blanking, output clamping)
threshold for switch-off (blanking,
minimum black level, no output
clamping)
input resistance
input voltage at pin CL
threshold for vertical blanking
(blanking, no input clamping)
threshold for clamping (input
clamping, no blanking)
threshold for test mode (no
clamping, no blanking, for
V
bl(TST)
see above)
current
1.2
1.4
1.6
V
5.8
6.5
6.8
V
R
i(HBL)
V
i(CL)
against ground
50
80
110
k
note 17
1.2
1.4
1.6
V
note 17
2.6
3.0
3.5
V
for test mode also
V
i(HBL)
> 6.8 V (switch-off)
V
P
1
V
P
V
I
i(CL)
V
i(CL)
< V
P
1 V
V
i(CL)
≥
V
P
1 V
note 17
note 17
3
0.6
1
100
75
75
μ
A
μ
A
ns/V
ns/V
μ
s
t
r(CL)
t
f(CL)
t
w(clamp)
rise time for clamping pulse
fall time for clamping pulse
width of clamping pulse
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT