CXA3572 Sony Corporation, CXA3572 Datasheet - Page 39

• Manufacturer Part Number: CXA3572
• Description: Driver/Timing Generator for Color LCD Panels
• Manufacturer: Sony Corporation

Notes on Operation
(1) This IC contains digital circuits, so the set board pattern must be designed in consideration of undesired
(2) The G/Y (Pin 22), R/R-Y (Pin 23), B/B-Y (Pin 24) and SYNC IN (Pin 25) pin input signals are clamped at
(3) The smoothing capacitor of the DC level control feedback circuit in the capacitor block connected to the
(4) A thorough study of whether the capacitor connected to the COM output pin satisfies the LCD panel
(5) If this IC is used in connection with a circuit other than an LCD, it may cause that circuit to malfunction
(6) Since this IC utilizes a C-MOS structure, it may latch up due to excessive noise or power surge greater
(7) Be sure to observe the power supply and power saving sequence specifications specified for this IC.
(8) Do not apply a voltage higher than V
(9) Do not use this IC under operating conditions other than those given.
(10) Absolute maximum rating values should not be exceeded even momentarily. Exceeding ratings may
(11) This IC has a MOS structure which is easily damaged by static electricity, so thorough measures should
(12) Always connect the V
(13) Be sure to connect the damping resistor of 10
radiation, interference to analog circuits, etc. Care should also be taken for the following items when
designing the pattern.
• The digital and analog IC power supplies should be separated, but the GND and V
• Use ceramic capacitors for the by-pass capacitors between the power supplies and GND, and connect
• The resistor connected to Pin 28 should be connected as close to the pin as possible, and the wiring
the inputs using the capacitors connected to each pin, so these signals should be input at sufficiently low
impedance.
(Input at an impedance of 1k
RGB output pins should have a leak current with a small absolute value and variance. Also, when using
the pulse elimination (PAL display) function, the picture quality should be thoroughly evaluated before
deciding the capacitance value of the capacitor.
specifications should be made before deciding the capacitance value.
depending on the order in which power is supplied to the circuits. Thoroughly study the consequences of
using this IC with other circuits before deciding on its use.
than the maximum rating of the I/O pins, or due to interface with the power supply of another circuit, or
due to the order in which power is supplied to circuits. Be sure to take measures against the possibility of
latch up.
damage the device, leading to eventual breakdown.
be taken to prevent electrostatic discharge.
these pins open. The voltages applied to the power supply pins should be as follows.
V
SS
separated and should use a plain GND (V
possible. The power supplies should also use a plain pattern.
these capacitors as close to the pins as possible.
from the pin to GND should be as short as possible. Also, do not pass other signal lines close to this pin
or the connected resistor.
= GND1 = GND2
SS
, GND1 and GND2 pins to the lowest potential applied to this IC; do not leave
V
DD
= V
(max.) or less.)
CC
1
DD
V
CC
or lower than V
2.
– 39 –
SS
to ROUT, GOUT, BOUT, PSIGOUT and COM output.
) pattern in order to reduce impedance as much as
SS
to I/O pins.
SS
should not be
CXA3572R