Specifications

Intel
®
810E2 Chipset Platform
R
102 Design Guide
3.24.4. Recommendation for Intel
®
Platforms
The following tables are examples of components that meet Intel’s recommendations, when configured in
the topology presented in Figure 60.
Table 25. Inductor
Part Number Value Tol SRF Rated I DCR
TDK MLF2012A4R7KT 4.7 µH 10% 35 MHz 30 mA 0.56 Ω (1 W max)
Murata LQG21N4R7K00T1 4.7 µH 10% 47 MHz 30 mA 0.7 Ω (±50%)
Murata LQG21C4R7N00 4.7 µH 30% 35 MHz 30 mA 0.3 Ω max
Table 26. Capacitor
Part Number Value Tolerance ESL ESR
Kemet T495D336M016AS 33 µF 20% 2.5 nH 0.225 Ω
AVX TPSD336M020S0200 33 µF 20% 2.5 nH 0.2 Ω
Table 27. Resistor
Value Tolerance Power Note
1 Ω 10% 1/16W Resistor may be implemented with trace resistance in which
discrete R is not needed
To satisfy damping requirements, total series resistance in the filter (from VCC
CORE
to the top plate of the
capacitor) must be at least 0.35 Ω. This resistor can be in the form of a discrete component, or routing, or
both. For example, if the picked inductor has a minimum DCR of 0.25 Ω, then a routing resistance of at
least 0.10 Ω is required. Be careful not to exceed the maximum resistance rule (2 Ω). For example, if
using discrete R1, the maximum DCR of the L should be less than 2.0 - 1.1 = 0.9 Ω, which precludes
using some inductors.
Other routing requirements:
• C should be close to PLL1 and PLL2 pins, < 0.1 Ω per route. These routes do not count towards the
minimum damping R requirement.
• PLL2 route should be parallel and next to PLL1 route (minimize loop area).
• L should be close to C; any routing resistance should be inserted between VCC
CORE
and L.
• Any discrete R should be inserted between VCC
CORE
and L.