Dennis Field / dvk-mx8m-bsb - History

Add pi-matching circuit to the baseband modem antenna's feedline

The return path for the antenna may have to have a 6.8nH Murata LQG15HN inductor installed on it (cutting the ground trace shorting the pads). The BoM was updated with the new components and everything was reannotated and updated (page 2's caps were out of order).

Update the WWAN/BB antenna to use the Antenova SR4L034-R antenna

Begin routing the HDMI circuit

Needed to create the HDMI_HEAC_P/N labels to route Utility&HPD as diff pairs. Made cap C1905 NC, which is in parallel with a 0Ohm resistor between the HDMI sheilding and GND.

Change all 0603 capacitors _EXCEPT_ the 2.2uF, 4.7uF, 8.2uF, 10uF, and 22uF caps to 0402

Use the new 1.5mm diameter test point footprint from KiCad 5's library

Update the schematic symbols and footprints after upgrading to KiCad 5.0.0, fix all ERC and DRC violations after the new update/upgrade

Replace the 103HT NTC thermistor with a ERTJ1VG103FA as found in TI's TIDA-01182 eval board which has a charge controller IC from the same family and uses an 18650 battery, change is due to it being smaller, cheaper, and has the same B value as the recommended thermistor in the charge controller IC's datasheet, comparing the thermistors' tables shows that they are nearly identical and that it should be a drop-in replacement

Continue layout around the charge controller circuit