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TDA4886A Datasheet, PDF (12/52 Pages) NXP Semiconductors – 140 MHz video controller with I2C-bus | |||
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Philips Semiconductors
140 MHz video controller with I2C-bus
Product speciï¬cation
TDA4886A
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
tdl5
delay between leading edges of V11 < 0.8 V; input pulse with â
270 â
ns
vertical blanking input pulse and 50 ns/V; threshold for rising
signal blanking at signal outputs input pulse V5 = 1.4 V;
threshold after input clamping
pulse V5 = 3 V; VI(b-w) = 0.7 V;
see Fig.7
tdt5
delay between trailing edges of V11 < 0.8 V; input pulse with â
115 â
ns
vertical blanking input pulse and 50 ns/V; threshold V5 = 1.4 V;
internal blanking pulse
see Fig.7
Output clamping and blanking input (pin 11)
V11
output clamping and blanking note 9
input signal
no blanking,
â0.1 â
+0.8 V
no output clamping
blanking, no output clamping 2.0 â
2.6 V
I11
input current
blanking, output clamping
V11 = 0.8 V
pin 11 connected to ground;
note 8
3.5 â
VP
V
â
â0.4 â
µA
â80 â60 â30 µA
V11 = â0.1 V; note 8
â250 â200 â100 µA
tW11
width of output clamping pulse threshold V11 = 3 V
1
â
â
µs
Video signal inputs (channel 1: pin 6; channel 2: pin 8; channel 3: pin 10)
Vi(b-w)6,8,10
II6,8,10
positive input signal referred to
black
DC input current
Signal blanking
no input clamping;
VI6,8,10 = VI(clamp)6, 8, 10;
Tamb = â20 to +70 °C
during input clamping;
VI6,8,10 = VI(clamp)6,8,10 ±0.7 V
â
0.7 1.0 V
0.02 0.20 0.35 µA
±100 ±135 ±170 µA
αct(blank)
crosstalk suppression from
control bit DISV = 1; f = 80 MHz 20
â
â
dB
input to output during blanking control bit DISV = 1;
10
â
â
dB
f = 120 MHz
Clipping of negative input signals (measured at signal outputs)
âVclipp
offset during sync clipping
VI6,8,10 = VI(clamp)6,8,10; note 10; â
â
2
%
related to nominal colour signal see Fig.3
Contrast control; see Fig.8 and note 11
dC
âGtrack
colour signal related to nominal
colour signal
tracking of output colour signals
of channels 1, 2 and 3
3FH (maximum)
26H (nominal)
00H (minimum)
3FH to 00H; note 12
â
4.2 â
dB
â
0
â
dB
â
â28 â
dB
â
0.0 0.5 dB
1998 Dec 04
12
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