cx28331 Mindspeed Technologies, cx28331 Datasheet - Page 51
cx28331
Manufacturer Part Number
cx28331
Description
Single/dual/triple E3/ds3/sts-1line Interface Unit
Manufacturer
Mindspeed Technologies
Datasheet
1.CX28331.pdf
(65 pages)
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28333-DSH-001-A
Appendix B: Exposed Thin Quad Flat
(ETQFP) Pack
NOTE:
The Exposed Thin Quad Flat Pack (ETQFP) package provides greater design
flexibility and increased thermal efficiency, while using a standard size IC
package. The exposed pad improves performance by permitting higher clock
speeds, more compact systems, and a more aggressive design criteria. ETQFP
thermal performance is better than standard packages; however, to make
optimum use of the thermal efficiencies designed into the ETQFP, the PCB must
be designed with this package in mind. The following sections of this document
provide more information regarding the thermal performance and PCB design for
Mindspeed ETQFPs.
Mindspeed Proprietary and Confidential
Mindspeed recommends that the exposed paddle on the CX2833i-1x be
soldered to the ground side of the PCB for reasons described below. Do
not route PCB traces or vias under the exposed paddle area of the
CX2833i-1x device.
Mindspeed Technologies
B
™
B-1
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