tda9112a STMicroelectronics, tda9112a Datasheet - Page 10

• Manufacturer Part Number: tda9112a
• Description: High-end I2c Controlled Deflection Processor For Multisync Monitor
• Manufacturer: STMicroelectronics

TDA9112A
6.4 Horizontal section
10/60
PLL1
PLL2
H-drive output on pin
t
t
V
ph
V
ph
------------------------- -
f
V
V
TopHPLL2C
Symbol
f
V
R
V
BotHPLL2C
t
HO 0
(max)
f
HO
V
Hoff
(min)
HOCapt
HOThrLo
I
f
HOThrHi
HOThrfr
ThrHFly
V
I
In(HFly)
InHFly
C
HO(0)
V
HPosF
HOut
I
f
f
RO
HO
HO 0
S(0)
CO
HO
/T
V
/T
H
/T
HO
T
H
H
Current load on
Capacitance on
Frequency of hor. oscillator
Free-running frequency of hor. oscill.
Hor. PLL1 capture frequency
Temperature drift of free-running freq.
Average horizontal oscillator sensitivity
H. oscill. control voltage on pin
Threshold on H. oscill. control voltage on
HPLL1F
Control voltage on
Bottom of hor. oscillator sawtooth
Top of hor. oscillator sawtooth
Input impedance on
Current into
Voltage threshold on
H flyback lock middle point
Low clamping voltage on
High clamping voltage on
Min. advance of H-drive OFF before
middle of H flyback
Max. advance of H-drive OFF before
middle of H flyback
Current into
Duty cycle of H-drive signal
HOut
pin for tracking of EW with freq.
Table 1. Horizontal section
HFly
HOut
Parameter
RO
CO
input
output
HPosF
(7)
(8)
pin
pin
HFly
HFly
input
HPLL2C
HPLL2C
pin
input
(6)
(4)
(6)
HPLL1F
(6)
pin
pin
(1)
(5)
(5)
(3)
R
fHO(0)
fHO(0)
VRefO=8V
VRefO=8V
HPOS
V
At top of H flyback pulse
No PLL2 phase modula-
tion
Null asym. correction
Null asym. correction
Output driven LOW
f
HDUTY
Soft-start/Soft-stop value
H
11111111b
10000000b
00000000b
x1111111b
x0000000b
(HFly)
RO
= 31kHz;
( Vcc = 12V, T
Test Conditions
=5.23k , C
>VThrHFly
(Sad01h):
= 28.5kHz
= 28.5kHz
(Sad00h):
CO
=820pF
(2)
amb
= 25°C)
Min.
390
300
1.4
0.5
27
29
Value
Typ.
-150
28.5
20.2
500
5.0
2.8
3.4
4.0
1.6
6.4
0.6
4.0
1.6
4.0
44
27
65
85
0
Max.
29.9
150
122
700
1.5
6.0
30
5
ppm/°C
kHz/V
Units
kHz
kHz
kHz
mA
mA
mA
pF
%
%
%
%
%
V
V
V
V
V
V
V
V
V
V
V