TDA4853 Datasheet, PDF (27/60 Pages) NXP Semiconductors – I2C-bus autosync deflection controllers for PC/TV monitors

Philips Semiconductors
I²C-bus autosync deflection controllers for
PC/TV monitors
Product specification
TDA4853; TDA4854
c) VPOS centred (register VPOS = X and control
bit VPC = 1)
d) VLIN = 0 (register VLIN = X and control
bit VSC = 1)
e) VLINBAL = 0 (register VLINBAL = X and control
bit VLC = 1)
f) FHMULT = 0
g) HPARAL = 0 (register HPARAL = X and control
bit HPC = 1)
h) HPINBAL = 0 (register HPINBAL = X and control
bit HBC = 1)
i) Vertical oscillator synchronized
j) HSIZE = 255.
9. The output signal at EWDRV (pin 11) may consist of
horizontal pincushion + corner correction + DC shift +
trapezium correction. If the control bit VOVSCN is set,
and the VPOS adjustment is set to an extreme value,
the tip of the parabola may be clipped at the upper limit
of the EWDRV output voltage range. The waveform of
corner correction will clip if the vertical sawtooth
adjustment exceeds 110% of the nominal setting.
10. If f_H tracking is enabled, the amplitude of the complete
EWDRV output signal (horizontal pincushion + corner
correction + DC shift + trapezium) will be changed
proportional to I_HREF. The EWDRV low level of 1.2 V
remains fixed.
11. First pole of transconductance amplifier is 5 MHz
without external capacitor (will become the second
pole, if the OTA operates as an integrator).
12. Open-loop gain is -V-V---^B-_B--^O-_I--_N-^P- at f = 0 with no resistive load
and C_BOP = 10 nF [from BOP (pin 3) to GND].
Vertical and EW adjustments
handbo_Io_Vk,_Oh_Ual_Tfp₁age
IVOUT2
MBG590
∆l2 ∆l1⁽¹⁾
handb_Io_Vo_Ok,_Uh_Tal₁fpage
IVOUT2
MBG592
∆l1⁽¹⁾ ∆l2
t
t
(1) ∆I₁ is the maximum amplitude setting at register VSIZE = 127,
control bit VOVSCN = 0, control bit VPC = 1,
control bit VSC = 1 and control bit VLC = 1.
VSIZE = ^∆-_∆---II--²¹- × 100%
VSMOD = _∆∆----II--²¹- × 100%
Fig.5 Adjustment of vertical size.
(1) ∆I₁ is the maximum amplitude setting at register VSIZE = 127
and control bit VPC = 1.
VPOS = ^∆---2-I--²--_×--^–--_∆---^∆-I--₁^I--1- × 100%
Fig.6 Adjustment of vertical position.
1999 Jul 13
27