Task :
For another project, our end-customer came to us with a request to form a complete WiFi enabled Digital TV multi-chip module (MCM) SiP, consisting of 4 components:
1) Digital TV demodulator ASIC in 65nm + 2) WiFi receiver / transmitter & 3) ADC + 4) PCIe interface digital ASIC
EquipIC took the following steps to build a fully integrated ISDBT standard digital TV receiver:
- write specification, giving all signal connections between bondpads, SMDs and package balls
- describe critical signals with specific requirements
- design simulations
- design & review substrate against specs and critical requirements
- modify substrate design
- build parts
Key challenges faced and resolved :
- devising 4 layer substrate aligned with final system specs with minimal noise levels and cross talk within the package
- optimization of substrate lay-out via reiterative RTL parasitic extraction and system simulations
Final solution
4 layer substrate assembled into a 240 ball 15×15 mm MCM BGA.
The project took approximately 6 months to complete and resulted in fully functional components that received ISDBT digital television signals, demodulated them and displayed the TV images on a standard laptop computer.
Substrate design detail:
