zl10036 Zarlink Semiconductor, zl10036 Datasheet - Page 29

• Manufacturer Part Number: zl10036
• Description: Digital Satellite Tuner With Rf Bypass
• Manufacturer: Zarlink Semiconductor

ZL10036
Data Sheet
5.0
Application Notes
5.1
Thermal Considerations
Figure 12 - Copper Dimensions for Optimum Heat Transfer
Figure 13 - Paste Mask for Reduced Paste Coverage
The ZL10036 uses the 40-pin QFN package with a thermal ‘paddle’ in the base, which has a very high thermal
conductivity to the die, as well as low electrical resistance to the Vee connections. The ZL10036 has a fairly high
power density, and if the excess heat is not efficiently removed, it will rapidly overheat beyond the 125°C limit, and
affect the performance or could even cause permanent damage to the device.
The paddle is designed to be soldered to a size-matched pad on the PCB (see Figure 13 on page 29) which is
thermally connected to an efficient heat sink. The heat sink can be as simple as an area of copper ground plane on
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Zarlink Semiconductor Inc.