LTE Module SeriesEG91 Hardware DesignEG91_Hardware_Design 2 / 93About the DocumentHistoryRevision Date Author Description1.0 2017-03-22Felix YIN/Yeoman CHEN/Jackie WANGInitial1.1 2018-01-23 Felix YIN/Rex WANG1. Added band B28A.2. Updated the description of UMTS and GSMfeatures in Table 2.3. Updated the functional diagram in Figure 1.4. Updated module operating frequencies inTable 21.5. Updated current consumption in Table 26.6. Updated RF output power in Table 27.7. Updated the conducted RF receivingsensitivity in Table 28.8. Updated the GPRS multi-slot classes inTable 33.9. Added thermal consideration in Chapter 5.810. Added a GND pad in each of the four cornersof the module’s footprint in Chapter 6.2.11. Updated storage information in Chapter 7.1.12. Added packaging information in Chapter 7.3.1.2 2018-03-14 Felix YIN/Rex WANG1. Added the description of EG91-NA.2. Updated the functional diagram in Figure 1.3. Updated pin assignment in Figure 2.4. Updated GNSS function in Table 1.5. Updated GNSS Features in Table 2.6. Updated reference circuit of USB interfacein Figure 21.7. Added description of GNSS receiver inChapter 4.