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Archived Boards and Threads => Archived Boards => FAQ GlobalTop GPS Receivers and Modules => Topic started by: Horsa on August 18, 2011, 11:29:22 AM

Title: current consumptions of PA6C sensibly higher than those of Gmm-u2p or SL3C
Post by: Horsa on August 18, 2011, 11:29:22 AM
Q: why do the current consumptions of GlobalTop FGPMMOPA6C (PA6C) are sensibly higher than those of GlobalTop Gmm-u2p and GlobalTop SL3C modules?

All the following GlobalTop Technology GPS receivers

are based on the same MediaTek MT3329 chip. From the following table though

modeGmm-u2pSL3CPA6C
acquisition (mA)191925
tracking (mA)151520

it is clear that the current consumptions of GlobalTop FGPMMOPA6C (PA6C) are sensibly higher than those of GlobalTop Gmm-u2p and GlobalTop SL3C modules. As GlobalTop FGPMMOPA6C (PA6C) has a passive internal GPS patch antenna (patch-on-top), the reason for a higher current consumption is the internal power supply distribution architecture: