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
- GlobalTop Gmm-u2p
- GlobalTop SL3C
- GlobalTop FGPMMOPA6C (PA6C)
are based on the same MediaTek MT3329 chip. From the following table though
| mode | Gmm-u2p | SL3C | PA6C |
| acquisition (mA) | 19 | 19 | 25 |
| tracking (mA) | 15 | 15 | 20 |
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:
- GlobalTop Gmm-u2p: switching regulator
- GlobalTop SL3C: switching regulator
- GlobalTop FGPMMOPA6C (PA6C): linear regulator
