TDA9110 STMicroelectronics, TDA9110 Datasheet - Page 22

• Manufacturer Part Number: TDA9110
• Description: Deflection Processor 32-Pin SPDIP
• Manufacturer: STMicroelectronics

Specifications of TDA9110

• Package: 32SPDIP
• Operating Temperature: 0 to 70 °C

TDA9110
OPERATING DESCRIPTION (continued)
Figure 21 : Vertical Part Block Diagram
III.2 - EW
EWOUT = 2.5V + K1 (V
K1 is adjustable by the EW amplitude I
K2 is adjustable by the Keystone I
III.3 - DC HSize Output Control
A 7 bits D/A converter is available on Pin 28. The
output is a NPN transistor emitter follower output
with an internal 100mA current source from output
to ground (max. sunk current). The Max. current
the output is able to source is 2.5mA. The output
level is between 0.5V to 4.5V. This DAC can be
used to control the H-Size.
III.4 - Dynamic Horizontal Phase Control
K5 is adjustable by the SidePin Balance I
22/29
I
V_SYNC
OUT
= K5 (V
2
+ K2 (V
OUT
- V
SYNCHRO
POLARITY
OUT
DCOUT
PARABOLA
GENERATOR
- V
OUT
)
DCOUT
2
+ K6 (V
- V
DCOUT
)
OSCILLATOR
2
C register
OUT
SUB0E/6bits
)
2
SUB0A/6bits
2
PARAL
EW_CENT
C register
2
- V
C register
DISCH.
DCOUT
AMP 6bits
SUB09/7bits
SUB0D/6bits
EW_AMP
SPB_AMP
)
22
OSC
CAP
CHARGE CURRENT
K6 is adjustable by the Parallelogram I
III.5 - Function
When the synchronization pulse is not present, an
internal current source sets the free running fre-
quency. For an external capacitor, C
the typical free running frequency is 106Hz.
The typical free running frequency can be calcu-
lated by :
A negative or positive TTL level pulse applied on
Pin 2 (VSYNC)as well as a TTLcomposite synchro
on Pin 1 can synchronize the ramp in the range
[fmin , fmax]. This frequency range depends on the
external capacitorconnectedon Pin 22.A capacitor
in the range [150nF, 220nF] 5% is recommanded
forapplicationin thefollowingrange: 50Hz to 120Hz.
24
SPB_OUT
V_FOCUS
EW_OUT
Internal Signal to PLL2
Internal Signal added
SAMPLING
Vlow
to H_FOCUS
f
0
Hz
TRANSCONDUCTANCE
REF
Sawth.
Disch.
20
SAMP.
CAP
AMPLIFIER
1.6 e
5
C CORRECTION
S CORRECTION
18 BREATH
23 VERT_OUT
VS_AMP
SUB07/6bits
COR_C
SUB08/6bits
VERT_AMP
SUB05/7bits
V
SUB0C/5bits
V
SUB06/7bits
MOIRE
POSITION
C
OSC
1
OSC
2
C register
= 150nF,