HD49335F/HF

Rev.1.0, Feb.25.2004, page 26 of 29

Notice for Use

1. Careful handling is necessary to prevent damage due to static electricity.

2. This product has been developed for consumer applications, and should not be used in non-consumer applications.

3. As this IC is sensitive to power line noise, the ground impedance should be kept as small as possible. Also, to

prevent latchup, a ceramic capacitor of 0.1 µF or more and an electrolytic capacitor of 10 µF or more should be

inserted between the ground and power supply.

the phase difference should be 0.3 V or less at power-on and 0.1 V or less during operation.

5. If a noise filter is necessary, make a common connection after passage through the filter, as shown in the figure

below.

HD49335

Noise filter

Analog

+3.0V

HD49335

100

µH

0.01

µF

Noise filter

Example of noise filter

Digital

+3.0V

0.01

µF

set grounds, connect to the analog system.

8. No Connection (NC) pins are not connected inside the IC, but it is recommended that they be connected to power

supply or ground pins or left open to prevent crosstalk in adjacent analog pins.

9. To ensure low thermal resistance of the package, a Cu-type lead material is used. As this material is less tolerant of

bending than Fe-type lead material, careful handling is necessary.

10. The infrared reflow soldering method should be used to mount the chip. Note that general heating methods such as

solder dipping cannot be used.

11. Serial communication should not be performed during the effective video period, since this will result in degraded

picture quality. Also, use of dedicated ports is recommended for the SCK and SDATA signals used in the

HD49330AF. If ports are to be shared with another IC, picture quality should first be thoroughly checked.

12. At power-on, automatic adjustment of the offset voltage generated from PGA, ADC, etc., must be implemented in

accordance with the power-on operating sequence (see page 24).

13. Ripple noise of DC/DC converter which generates the voltage of analog part should set under –50 dB with power

supply voltage.