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| 型號(hào)： | 935262634112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PZIP13 |
| 封裝： | PLASTIC, SOT-141, DIL-BENT-SIL, 13 PIN |
| 文件頁(yè)數(shù)： | 3/18頁(yè) |
| 文件大小： | 153K |
| 代理商： | 935262634112 |
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1997 Aug 27
11
Philips Semiconductors
Preliminary specication
Video output amplier
TDA6120Q
TEST AND APPLICATION INFORMATION
Dissipation
Regarding dissipation, distinction must be made between
static dissipation (independent of frequency) and dynamic
dissipation (proportional to frequency). The static
dissipation of the TDA6120Q is due to supply currents, and
currents in the feedback network and CRT.
The static dissipation is given by the following equation:
Where:
Rf = feedback resistance
IOUTC = DC cathode current.
The dynamic dissipation is given by the following equation:
P
stat
V
CC
I
CC
V
DD
I
DD
V
OUTC
V
OUTC
R
f
I
OUTC
–
---------------------------
×
–
×
+
×
=
P
dyn
V
DD
C
L
C
int
+
() f
×
V
OUTC p
p
–
()
×
b
×
=
Where:
CL = load capacitance
Cint = effective internal load capacitance
(approximately 7 pF)
f = frequency
VOUTC(p-p) = output voltage (peak-to-peak value)
b = non-blanking duty cycle (0.8).
The IC must be mounted on the picture tube base
printed-circuit board to minimize the load capacitance CL.
Switch-off
The voltage at output pins OUT and OUTC will be pulled
to ground when the low voltage supply voltage (VCC) is
switched off.
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