TDA9530 데이터 시트보기 (PDF) - STMicroelectronics
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TDA9530 Datasheet PDF : 8 Pages
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TDA9530
TYPICAL APPLICATION
PC Board Lay-out
The best performance is obtained with a carefully
designed HF PC board, especially for the output
and input capacitors.
Rise/fall time and bandwidth are measured on
a 8pF load (including a PC board parasitical, sock-
et and a CRT capacitor).
The input voltage range for the cut-off adjustment
pins is from 1 to 4 volts and a 10 nF to 47 nF by-
pass capacitor is recommended on these pins.
Power Dissipation
The power dissipation is the sum of the DC and
the dynamic dissipation.
As the feedback resistors are integrated, the DC
power dissipation (capacitive load) can be estimat-
ed by:
PSTAT = VDD . IDD + VCC . ICC
The dynamic dissipation in worst case (full band-
width and black pixel/white pixel picture - see Note
3) is:
PDYN = 3 VDD . CL . VOUT(PP) . f . K
where f is the video frequency and K the active line
duration / total duration.
Example: for VDD = 110V, VCC = 12V,
VOUT = 40 VPP, IDD = 15mA, ICC = 40mA,
fVIDEO = 30MHz, CL = 8pF and K = 0.72.
We have: PSTAT = 2.13W and PDYN = 2.28W
Therefore: Ptot = 4.41W.
Note: 2
This worst thermal case must only be
considered for TJmax calculation.
Nevertheless, during the average life of the
circuit, the conditions are very close to the
white picture conditions.
75Ω
TDA9530
4
IN1
VC.OFF1 2
75Ω
C.OFF1
10
IN2
VC.OFF2 6
75Ω
C.OFF2
12
IN3
VC.OFF3 14 C.OFF3
VCC
VDD 110V
VCC
11
VDD
5
8 GNDS
OUT1 RP
1
3
CL
GND1
OUT2 RP
7
CL
9
GND2
OUT3 RP
15
13
CL
GND3
4/8
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