S3064 AMCC (Applied Micro Circuits Corp), S3064 Datasheet - Page 11

• Manufacturer Part Number: S3064
• Description: Bicmos Lvpecl Clock Generator Sonet/sdh/atm Oc-12 Transmitter And Receiver Sonet/sdh/atm Oc-48 Differential 1:16 Receiver
• Manufacturer: AMCC (Applied Micro Circuits Corp)

SONET/SDH/ATM OC-48 16:1 TRANSMITTER
S3083
Figure 6. 80 PQFP/TEP Package
BOTTOM VIEW
TOP VIEW
Note: The S3083 package is equipped with an embedded conductive heatsink on the bottom (board side). Active circuitry and
vias should not appear in the area immediately under the package. This heatsink is electrically biased to the Vee potential of the
S3083. For optimum thermal management, a foil surface at ground (or Vee if other than ground) is recommended immediately
under the package, and connected with multiple vias to the internal plane(s) of similar potential. Thermally conductive epoxy or
other conductive interposer can be used to establish a good thermal dissipation path.
Table 6. Thermal Management
Device
Max Power
ja
1.56 W 1
S3083
26˚C/W
1. Add 0.20W for loopback active.
11
August 27, 1999 / Revision B