Philips Semiconductors
Preliminary specification
YUV one chip picture improvement based on luminance
vector-, colour vector- and spectral processor
TDA9178
SYMBOL
Ro
Io(bias)
CL
PARAMETER
output resistance
CONDITIONS
MIN.
TYP.
MAX.
150
UNIT
−
−
−
−
Ω
output bias current
load capacitance
1.3
−
mA
pF
−
15
COLOUR DIFFERENCE INPUTS U AND V (PINS UIN AND VIN)
Vi(U)(p-p)
Vi(V)(p-p)
Ii(bias)
input voltage U
(peak-to-peak value)
−
−
−
1.33
1.05
−
1.9
1.9
0.1
V
input voltage V
(peak-to-peak value)
V
input bias current
no clamp
µA
COLOUR DIFFERENCE OUTPUTS U AND V (PINS UOUT AND VOUT)
Vo(cl)
output voltage level during
clamping
−
2.7
−
V
GUV(i-o)
Eoffset
∆Gtrack
BUV
gain inputs to output
offset error
transparent
transparent
transparent
0.90
−1
1.00
1.10
+1
5
0
−
−
%
UV gain tracking error
bandwidth
−
%
1fH mode;
2.5
−
MHz
transparent (−3 dB)
2fH mode;
5
−
−
MHz
transparent (−3 dB)
Ro
output resistance
output bias current
load capacitance
−
−
−
−
150
−
Ω
Io(bias)
CL
1.3
−
mA
pF
15
Luminance vector processing
BLACK STRETCH
BLOScor(i)
input black offset correction
8
10
12
%
HISTOGRAM
White-point stretch
GWP(max)
maximum luminance gain for white maximum non-linearity
−
1.1
−
stretch
setting gain
Non-linear amplifier
Gnla(min)
Gnla(max)
Gnla
minimum segment gain
maximum non-linearity
setting gain
−
−
−
0.4
−
−
−
maximum segment gain
maximum non-linearity
setting gain
2.0
non-linear control curve
63 steps
0 to 100
%
%
VARIABLE GAMMA
Gg(var)(min)L
Gg(var)(max)
Gnla
minimum variable gamma setting
−
−
−
0.5
−
−
−
maximum variable gamma setting
non-linear control curve
1.5
63 steps
16
0 to 100
1999 Sep 24
NXP [ NXP ]
