cxa1853q Sony Electronics, cxa1853q Datasheet - Page 33

• Manufacturer Part Number: cxa1853q
• Description: Rgb Driver For Lcd
• Manufacturer: Sony Electronics

Notes on Operation
1) R IN (Pin 9), G IN (Pin 10), B IN (Pin 11) input signal impedance
2) Clamp hold capacitors (Pins 51 to 53 and 65 to 67)
3) R, G, B, SID OUT load capacitance
4) External capacitor at the output
5) GND and power supply pins
An external capacitor is used as the hold capacitor for the clamp at the input of this IC. Therefore, the input
signal impedance must be sufficiently low (75
current.
The external capacitors connected to these pins must have a small leak current.
The output signal will tend to oscillate if the R, G, B and SID OUT load capacitance increases. Be sure to
insert a 100 to 220
exceeding 30pF.
The leak current absolute value and tolerance for the R, G, B and SID OUT average value detecting
capacitors should be small.
Note that if there is an offset in the leak current between R, G and B, offset voltage is also generated
between R, G and B in the external resistor, which causes a DC offset of the output signal.
Pins 12, 22, 34, 48, 55 and 64 (GND) should be set to the minimum identical potential applied to the IC,
and should not be left open. In addition, the potential at Pins 8, 18, 50 and 62 should be the same.
resistor in series to these output pins, and design to keep the load capacitance from
SID OUT
SID CLP
R, G, B,
R, G, B,
or less) and the external capacitor must have a small leak
– 33 –
100 to 220
390k
1µF
Load capacitance
30pF or less
CXA1853Q