ZHCSFJ7C August 2016 – December 2018 AMIC110
PRODUCTION DATA.
HS bypass capacitors are critical for proper DDR2 interface operation. It is particularly important to minimize the parasitic series inductance of the HS bypass capacitors, the AMIC110 device DDR2 power, and the AMIC110 device DDR2 ground connections. Table 7-51 contains the specification for the HS bypass capacitors as well as for the power connections on the PCB.
NO. | PARAMETER | MIN | MAX | UNIT |
---|---|---|---|---|
1 | HS bypass capacitor package size(1) | 0402 | 10 mils | |
2 | Distance from HS bypass capacitor to device being bypassed | 250 | mils | |
3 | Number of connection vias for each HS bypass capacitor(2) | 2 | vias | |
4 | Trace length from bypass capacitor contact to connection via | 30 | mils | |
5 | Number of connection vias for each AMIC110 VDDS_DDR and VSS terminal | 1 | vias | |
6 | Trace length from AMIC110 VDDS_DDR and VSS terminal to connection via | 35 | mils | |
7 | Number of connection vias for each DDR2 device power and ground terminal | 1 | vias | |
8 | Trace length from DDR2 device power and ground terminal to connection via | 35 | mils | |
9 | AMIC110 VDDS_DDR HS bypass capacitor count(3) | 10 | devices | |
10 | AMIC110 VDDS_DDR HS bypass capacitor total capacitance | 0.6 | μF | |
11 | DDR2 device HS bypass capacitor count(3)(4) | 8 | devices | |
12 | DDR2 device HS bypass capacitor total capacitance(4) | 0.4 | μF |