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TDA9108 데이터시트(PDF) 4 Page - STMicroelectronics

부품명 TDA9108
상세설명  MONITOR HORIZONTAL PROCESSOR
PDF  9 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA9108 데이터시트(HTML) 4 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
DUTY CYCLE ADJUSTMENT (continued)
tpADJ
Max. Horizontal Output Duty Cycle Range
(function of V4)tp
= K4⋅
V4
VS
(see note 3)
f = 31.5kHz
50
%
K4
Duty Cycle Adjustment Coefficient
1.6
1.8
2
KEY PULSE OUTPUT
V7k
Key Pulse Output Peak Voltage (emitter follower)
I7 = 5mA
4
5
V
V7L
Low Level (outside the key pulse)
0.2
0.5
V
tSK
Phase Relation between Trailing Edge of Key
Pulse and Middle of Sync. Input Pulse
f = 31.5kHz
Sync width = 2
µs
1.1
1.5
1.9
µs
tK
Key Pulse Duration
1.25
1.7
2.15
µs
OSCILLATOR
V12
Low Level Threshold Voltage
5.4
V
V12
High Level Threshold Voltage
8.2
V
I12
Charge Current
R13 = 10k
Ω
0.6
mA
I12
Discharge Current
R13 = 10k
Ω
0.3
mA
V13
Reference Voltage on Pin 13
2.6
2.9
3.2
V
fO
Free Running Frequency
R13 = 10k
Ω
C12 = 2.2nF
27
30
33
kHz
fMax.
Maximum Oscillator Frequency
R13 = 47k
Ω
C12 = 2.2nF
66
kHz
Jitt.
Horizontal Jitter
f = 31.5kHz
5
ns
∆fO
∆I13
Frequency Control Sensitivity
R13 = 10k
Ω
C12 = 2.2nF
100
Hz
µA
∆fO
Frequency Change when VS Drops to 7.5V
-6
%
PHASE COMPARATOR
V5
Control Voltage Range
9.4 to 8.2
V
I5
Peak Control Current
During flyback pulse
± 0.85
mA
I5
Input Current (blocked Phase Detector)
Outside flyback pulse
5
µA
tD
Permissible Delay between Output Pulse Leading
Edge and Flyback Pulse Leading Edge
tp -tf
µs
∆t
∆tD
Static Control Error
0.2
%
SYNC PULSE-OSCILLATOR PHASE COMPARATOR
V11
Control Voltage Range
4.6 to 1.4
V
I11
Control Peak Current
During Sync Pulse
± 2.3
mA
∆f
∆t
Phase Lock Loop Gain
R11-13 = 100k
Ω
4
kHz
µs
f
Catching and Holding Range
See Typical Application
± 700
Hz
OVERALL PHASE RELATIONSHIP
tO
Phase Relation between Middle of Flyback Pulse
and Middle of Sync. Pulse
R13 = 10k
Ω
C12 = 2.2nF
1.1
µs
∆V5
∆tO
Adjustment Sensitivity
130
mV
µs
∆I5
∆tO
Adjustment Sensitivity
50
µA
µs
Note 3 : td must be
≥ (Hperiod
tp
100
− 0.25
−
tfly
2
) in order to have
± 5% horizontal phase adjustment range.
TDA9108
4/9



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