fido2100 3-Port Industrial Ethernet DLR Switch with IEEE1588
Data Sheet
April 10, 2013
Table 7 Power Consumption (Nominal)
I/O Voltage 3.3VDC
Core Voltage 1.8VDC
Current Power
17.39mW 60.0mA 108.0mW .663mA
PLL Voltage 1.8VDC
Total
Power
Current
5.27mA
Power
Current
Power
1.19mW
126.6mW
5.1 Thermal Characteristics
The thermal resistance characteristics for the LQFP and the BGA packages are provided in Table
8. All data is simulated based on the 2S2P board type. The board type is defined by JEDEC
standard JESD51-7 for the PQFP package, and by JESD51-9 for the BGA package.
Table 8 Thermal Resistance Characteristics
Name
Description
Airflow (m/S)
0
BGA
8.03
LQFP
17.5
Junction to
Case
θJC (°C/W)
Junction to
Ambient
θJA (°C/W)
0
34.09
52.0
5.2 PLL Supply
The PLL for the fido2100 has dedicated supply and ground pins. For best performance of the
PLL it is desirable to provide a quiet or separate 1.8 V supply. Decoupling capacitors of 0.1 uF
and 10 uF should be placed on the board closely to the vdd18a_pll and gnda_pll pins. If the
digital supply is to be used, it is best to also place a series ferrite bead before the decoupling
capacitors and add additional decoupling capacitance of 0.1nF and 10nF.
5.3 System Clock Input
The system clock input (sys_clk) requires a rail-to-rail clock input at 25 MHz. This 25 MHz
clock input is then used by the PLL the create the necessary internal clocks for the fido2100.
38
support@innovasic.com
1-505-883-5263
Document #: IA211111101-04
UNCONTROLLED WHEN PRINTED OR COPIED
1-888-824-4184
INNOVASIC [ INNOVASIC, INC ]
