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参数资料
| 型号： | TDA6118JF/N2/S1 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PSFM9 |
| 封装： | PLASTIC, SOT-111-1, DIL-BENT-SIL, 9 PIN |
| 文件页数： | 2/15页 |
| 文件大小： | 99K |
| 代理商： | TDA6118JF/N2/S1 |
2004 Aug 26
10
Philips Semiconductors
Product specication
Video output amplier
TDA6118JF
External ashover protection
For sufficient flashover protection it is necessary to apply
an external diode for each channel. See application note
“AN01031 (Application note TDA6118JF)”.
To limit the diode current an external 220
carbon
high-voltage resistor in series with the external diode and
a 2 kV spark gap are needed (for this resistor value, the
CRT has to be connected to the main printed-circuit
board).
VDD must be decoupled to ground:
With a capacitor ≥100 nF with good HF behaviour
(e.g. foil); this capacitor must be placed as close as
possible to pins VDD and GND but definitely within
5 mm.
With a capacitor >10 F on the picture tube base print.
Switch-off behaviour
The switch-off behaviour of the TDA6118JF can be
controlled due to the fact that the output pins are still under
control of the input pins for low power supply voltages
(approximately 30 V and higher).
Bandwidth
The addition of the flash resistor produces a decreased
bandwidth and increases the rise and fall times. For further
information see application note
“AN01031 (Application
note TDA6118JF)”.
Dissipation
Regarding the dissipation, distinction must be made
between the static dissipation (independent of the
frequency) and the dynamic dissipation (proportional to
the frequency).
The static dissipation of the TDA6118JF is related to the
voltage supply current. The static dissipation equals:
Where:
VDD = supply voltage
Iq = quiescent supply current.
The dynamic dissipation equals:
Where:
CL = load capacitance
Cint = internal load capacitance (≈ 4 pF)
fi = input frequency
VVOC = output voltage (peak-to-peak value)
δ = non-blanking duty cycle.
The IC must be mounted on the picture tube base print to
minimize the load capacitance CL.
P
stat
V
DD
I
q
×
=
P
dyn
V
DD
C
L
C
int
+
() f
i
×
V
VOC
×δ
×
=
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