Datasheet

AM3517, AM3505
SPRS550E –OCTOBER 2009–REVISED MARCH 2013 www.ti.com
3.4 Core Voltage Decoupling
For module performance, decoupling capacitors are required to suppress the switching noise generated
by high frequency and to stabilize the supply voltage. A decoupling capacitor is most effective when it is
close to the device because this minimizes the inductance of the circuit board wiring and interconnects.
Table 3-5 summarizes the power supplies decoupling characteristics.
Table 3-5. Core Voltage Decoupling Characteristics
PARAMETER MIN TYP MAX UNIT
Cvdd_core
(1)
50 100 120 nF
Ccap_vdd_sram_core 100 nF
Cvdds_dpll_mpu_usbhost 100 nF
Cvdds_dpll_per_core 100 nF
Cvdda_dac 100 nF
Cvdd_sram_core 100 nF
Cvdd_sram_core_bg 100 nF
Cvdds_sram_mpu 100 nF
Cvddshv 100 nF
Cvdda3p3v_usbphy 100 nF
Cvdda1p8v_usbphy 100 nF
(1) 1 capacitor per 2 to 4 balls
86 Electrical Characteristics Copyright © 2009–2013, Texas Instruments Incorporated
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