STV9555 ST Microelectronics, STV9555 Datasheet - Page 9

• Manufacturer Part Number: STV9555
• Description: 9.5 ns TRIPLE-CHANNEL HIGH VOLTAGE VIDEO AMPLIFIER
• Manufacturer: ST Microelectronics

7
The total power dissipation is the sum of the static DC and the dynamic dissipation:
The static DC power dissipation is approximately:
The dynamic dissipation is, in the worst case (1 pixel On/ 1 pixel Off pattern):
where f is the video frequency and K the ratio between the active line and the total horizontal line duration.
Example:
We have:
Therefore:
Note 6: This worst thermal case must only be considered for TJmax calculation. Nevertheless, during the average life
P
P
P
for V
I
V
C
P
P
DD
TOT
STAT
DYN
OUT
L
STAT
TOT
POWER DISSIPATION
= 8pF and K = 0.72.
= 15mA, I
of the circuit, the conditions are closer to the white picture conditions.
DD
= P
= 4.79W.
= 3 V
= 40 V
= (V
= 2.13 W and P
= 110V, V
STAT
DD
DD
PP
CC
x I
+ P
x C
, f = 35MHz,
DD
= 40mA,
L
DYN
CC
x V
)+ (V
= 12V,
.
DYN
OUT(PP)
CC
= 2.66 W
x I
CC)
x f x K (see
Note
6)
STV9555
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