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TEA2028 Datasheet(PDF) 39 Page - STMicroelectronics

Part # TEA2028
Description  APPLICATION NOTE
PDF  47 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TEA2028 Datasheet(HTML) 39 Page - STMicroelectronics

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BLANKING OUTPUT
S1
IF
BLANK’
RESET
24 lines
NORMAL OPERATION
TOO LONG FLYBACK PULSE (FR)
Figure 76
Blanking Output
to Super Sand Castle
≥ 1
≥ 1
&
&
IF
IF
Reset
BLK’
BLK’
From
Frame
Counters
Q
Q
S
R
R
S
Q
Figure 75 : Frame Blanking Safety Block Diagram
VII.6 - On-chip Line Flip-flop
26
µs
V
V
V
16
IN
10
∆φmax = 16µs
Figure 78
16
13
C13
VIN
I
φ2
16
µs Window
for
∆ϕmax
&
10
LF
(Line Flyback)
Safety
(Pin 28)
≥ 1x 1
S
R
Q
Output
Figure 77
T10 =35
⋅ TVCO -K ⋅ R14 ⋅ C13
=70
⋅ 10-6 -4 ⋅ R14 ⋅ C13
Where TVCO is the VCO period of oscillation on
pin 18.
- If in synchronized mode :
TVCO =2
µs,
R14 = 3.32k
Ω
C13 = 3.3nF
ThereforeT10 =
26µs (nominal value)
TEA2028 - TEA2029 APPLICATION NOTE
39/46



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