TDA4885 Datasheet, PDF (14/56 Pages) NXP Semiconductors – 150 MHz video controller with I2C-bus

Philips Semiconductors
150 MHz video controller with I²C-bus
Product specification
TDA4885
SYMBOL
PARAMETER
CONDITIONS
MIN.
Limiting (pin 17); see Fig.9 and note 17
V_17(nom)
input voltage
pin 17 open-circuit
4.7
V_17(start)
starting voltage for contrast
4.2
and OSD contrast reduction
V_17(stop)
stop voltage for contrast and
OSD contrast reduction
−32 dB below maximum colour 1.5
signal (contrast setting 3FH)
I₁₇
maximum input current
V₁₇ = 0 V
−1.0
Brightness control; see Fig.12 and notes 18 and 19
∆V_bl
difference between black level 3FH (maximum)
+25
and reference black level at _{10H (nominal)}
−2
signal outputs related to
nominal colour signal
00H (minimum)
−12
∆V_BT
difference of ∆V_bl between any
−1.2
two channels related to
nominal colour signal
Brightness blanking
t_d11(br)l
delay between blanking input see Fig.8
−
at pin 11 (leading edge) and
brightness blanking at signal
outputs
t_d11(br)t
delay between blanking input see Fig.8
−
at pin 11 (trailing edge) and
brightness blanking at signal
outputs
Gain control; see Fig.13 and note 20
d_G
video signal related to video 00H (minimum)
−8
signal at maximum gain
3FH (maximum)
−
Gain modulation (channel 1: pin 12; channel 2: pin 13; channel 3: pin 14)
V_{12, 13, 14}
input voltage
symmetrical modulation
1.0
modulation feature not in use −
nominal: pins 12, 13 and 14 1.8
open-circuit
G_{mod1, 2, 3}
gain modulation channels 1, 2
and 3
note 21; see Fig.14
pins 12, 13 and 14 grounded 112
(modulation feature not in
use)
V_{12, 13, 14} = 1 V (maximum) 112
V_{12, 13, 14} = 2 V
−
V_{12, 13, 14} = 3 V (minimum) 76
TYP. MAX.
5.0 5.3
4.5 4.8
2.0 2.5
−0.5 −0.1
+30 +35
0 +2
−10 −8
0 +1.2
−
60
−
60
−7 −6
0
−
−
3.0
−
0
2.0 2.2
120 130
118 124
100 −
82 88
UNIT
V
V
V
µA
%
%
%
%
ns
ns
dB
dB
V
V
V
%
%
%
%
1997 Nov 25
14