TDA4780 Datasheet, PDF (26/44 Pages) NXP Semiconductors – RGB video processor with automatic cut-off control and gamma adjust

Philips Semiconductors
RGB video processor with automatic
cut-off control and gamma adjust
Preliminary specification
TDA4780
SYMBOL
PARAMETER
Threshold 3 (TH3)
I_{16(3)(max)(dch)}
maximum discharge current
S
steepness
CHARGE CURRENT
I₁₆
V₁₆
∆V₁₆
V₁₆
∆V₁₆
V_16(max)
charge current
start of contrast reduction
input range for full contrast reduction
start of brightness reduction
input range for full brightness reduction
maximum voltage by internal limitation
Hue adjust output (pin 26); note 14
V_o26(min)
minimum output voltage
V_o26(nom)
nominal output voltage
V_o26(max)
maximum output voltage
I₂₆
current of internal emitter follower
I²C-bus inputs
f₂₈
t_SU;DAT
t_H
t_L
t_r
t_f
clock frequency range
data set-up time
clock pulse HIGH
clock pulse LOW
rise time
fall time
Input levels (pins 27 and 28)
V_IL
LOW level input voltage
V_IH
HIGH level input voltage
I_I
input current
Output level (pin 27)
V_OL
LOW level output voltage
I_O
output current
CONDITIONS
TH3 = MX + V_LiL;
undelayed
YEXH = 0; I²C-bus
data 00H
YEXH = 0; I²C-bus
data 20H
YEXH = 0; I²C-bus
data 3FH
V₂₇ and V₂₈ = 0.4 V
V₂₇ and V₂₈ = 0.9V_P
V₂₇ = 0.4 V
MIN. TYP. MAX. UNIT
0.45 0.6 0.75 mA
−
1.5 −
mA/V
−2 −1 −0.5 µA
−
4
−
V
−
−2 −
V
−
2.5 −
V
−
−1.6 −
V
4.5 −
−
V
0.5 −
1.0 V
3.0 3.2 3.4 V
4.8 −
5.6 V
500 700 −
µA
0
−
250 −
4
−
4.7 −
−
−
−
−
100 kHz
−
ns
−
µs
−
µs
1
µs
0.3 µs
−
−
3.0 −
−10 −
−
−
1.5 V
5.5 V
−
µA
10 µA
−
−
3.0 −
0.4 V
−
mA
1997 Feb 06
26