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TDA9108 データシート(PDF) 3 Page - STMicroelectronics

部品番号 TDA9108
部品情報  MONITOR HORIZONTAL PROCESSOR
PDF  9 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA9108 データシート(HTML) 3 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS (continued)
(refer to the test circuit, VS = 12V, TA =25
oC, unless otherwise specified)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
HORIZONTAL SYNC. INPUT
V9SW
Sync Input Threshold
q
Sync high
q
Sync Low
2VS
0.8
V
V
I9SW
Sync Input Current
q
Sync high
q
Sync Low
-20
-7
1
µA
µA
SYNC POLARITY SELECTION
V10th
Polarity Selection Threshold
Positive sync on Pin 9 for V10 <V10th
Negative sync on Pin 9 for V10 >V10th
2.3
2.5
2.7
V
I10
Input Current
V10 =2V
V10 =3V
1
12
µA
µA
V10ZL
Low Impedance (2k
Ω) Threshold
(see note 1)
6.3
V
X-RAY PROTECTION CIRCUIT
V8th
X-ray Prot Input Threshold Voltage
(when V8 >V8th Pin 2 and 3 are inhibited
until VS is switched off/on)
2.6
2.9
3.2
V
I8
Input Current
V8
≤ 2.5
V8
≥ 3.3
-0.5
0.5
µA
µA
FLYBACK INPUT
V6
Phase Comparator Input Threshold
10
V
I6
Input Switching Current
0.1
mA
OUTPUT PULSE
V2
Saturation Voltage (Pin 3 grounded)
I2 = 150mA
2.2
3.2
V
I2
Output Current (Pin 3 grounded)
V2 = 5V
150
mA
V3
Output Voltage (Pin 2 connected to supply) q High level (I3 = 150mA)
q
Low level (I3 = 100mA)
8.8
9.8
1.5
10.8
2.7
V
V
I3
Output Current Capability
q
Source
q
Sink
150
100
mA
mA
R3
Output Resistance
q
At leading edge of
output pulse
q
At falling edge of
output pulse
3
20
Ω
Ω
DUTY CYCLE ADJUSTMENT
tp
Horizontal Output Pulse Duty Cycle on
Pin 3 (high level, line transistor off time)
f = 31.5kHz
Pin 4 not connected
26
30
34
%
V4
Voltage on Pin 4 (see note 2)
Pin 4 not connected
0.178 VS 0.19 VS 0.202 VS
V
R4
Serial Equivalent Resistor on Pin 4
(see note 2)
Pin 4 not connected
1.7
2.3
2.9
k
Ω
Note 1 : The voltage on the polarity detection comparator is clamped by an internal Zener diode (VZ).
When voltage on Pin 10 reaches VZ, then IPIn 10 =
VPin10
− VZ
2k
Ω
.
Note 2 : Pin 4 internal schematic
4
0.19 VS
2.3k
Ω
To Duty Cyc le
Adj ustment
10
V
S
2.5V
D Z
2k
Ω
TDA9108
3/9



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