EESchema Schematic File Version 4 EELAYER 30 0 EELAYER END $Descr A4 11693 8268 encoding utf-8 Sheet 8 13 Title "Democratic Sendcomm" Date "2020-12-26" Rev "0.9.2" Comp "Europalab Devices" Comment1 "Copyright © 2020, Europalab Devices" Comment2 "Fulfilling requirements of 20200210" Comment3 "Pending quality assurance testing" Comment4 "Release revision for manufacturing" $EndDescr $Comp L power:+3V3 #PWR? U 1 1 601CD688 P 5800 2350 AR Path="/5F53D687/601CD688" Ref="#PWR?" Part="1" AR Path="/60040A68/601CD688" Ref="#PWR0126" Part="1" F 0 "#PWR0126" H 5800 2200 50 0001 C CNN F 1 "+3V3" H 5815 2523 50 0000 C CNN F 2 "" H 5800 2350 50 0001 C CNN F 3 "" H 5800 2350 50 0001 C CNN 1 5800 2350 1 0 0 -1 $EndComp $Comp L Device:C_Small C? U 1 1 601CD68E P 7550 4050 AR Path="/5F53D687/601CD68E" Ref="C?" Part="1" AR Path="/60040A68/601CD68E" Ref="C72" Part="1" F 0 "C72" H 7250 4096 50 0000 L CNN F 1 "0,1uF" H 7250 4005 50 0000 L CNN F 2 "Capacitor_SMD:C_0805_2012Metric" H 7550 4050 50 0001 C CNN F 3 "~" H 7550 4050 50 0001 C CNN 1 7550 4050 1 0 0 -1 $EndComp $Comp L Device:C_Small C? U 1 1 601CD694 P 7950 4050 AR Path="/5F53D687/601CD694" Ref="C?" Part="1" AR Path="/60040A68/601CD694" Ref="C73" Part="1" F 0 "C73" H 8042 4096 50 0000 L CNN F 1 "4,7uF" H 8042 4005 50 0000 L CNN F 2 "Capacitor_SMD:C_0805_2012Metric" H 7950 4050 50 0001 C CNN F 3 "~" H 7950 4050 50 0001 C CNN 1 7950 4050 1 0 0 -1 $EndComp Connection ~ 5800 2450 Wire Wire Line 5800 2450 5800 2350 $Comp L Device:Battery_Cell BT? U 1 1 601CD69E P 6700 4250 AR Path="/5F53D687/601CD69E" Ref="BT?" Part="1" AR Path="/60040A68/601CD69E" Ref="BT2" Part="1" F 0 "BT2" H 6818 4346 50 0000 L CNN F 1 "Battery_Cell" H 6818 4255 50 0000 L CNN F 2 "Battery:BatteryHolder_Keystone_3002_1x2032" V 6700 4310 50 0001 C CNN F 3 "~" V 6700 4310 50 0001 C CNN 1 6700 4250 1 0 0 -1 $EndComp Wire Wire Line 7550 3950 7950 3950 Connection ~ 7550 3950 Wire Wire Line 6700 4050 6500 4050 $Comp L Device:C_Small C? U 1 1 601CD6A7 P 6500 4150 AR Path="/5F53D687/601CD6A7" Ref="C?" Part="1" AR Path="/60040A68/601CD6A7" Ref="C69" Part="1" F 0 "C69" H 6200 4196 50 0000 L CNN F 1 "0,1uF" H 6200 4105 50 0000 L CNN F 2 "Capacitor_SMD:C_0805_2012Metric" H 6500 4150 50 0001 C CNN F 3 "~" H 6500 4150 50 0001 C CNN 1 6500 4150 1 0 0 -1 $EndComp Wire Wire Line 6500 4250 6500 4350 Wire Wire Line 6700 4350 6600 4350 $Comp L Device:C_Small C? U 1 1 601CD6AF P 3700 4350 AR Path="/5F53D687/601CD6AF" Ref="C?" Part="1" AR Path="/60040A68/601CD6AF" Ref="C62" Part="1" F 0 "C62" H 3400 4396 50 0000 L CNN F 1 "0,1uF" H 3400 4305 50 0000 L CNN F 2 "Capacitor_SMD:C_0805_2012Metric" H 3700 4350 50 0001 C CNN F 3 "~" H 3700 4350 50 0001 C CNN 1 3700 4350 1 0 0 -1 $EndComp $Comp L Device:C_Small C? U 1 1 601CD6B5 P 4100 4350 AR Path="/5F53D687/601CD6B5" Ref="C?" Part="1" AR Path="/60040A68/601CD6B5" Ref="C64" Part="1" F 0 "C64" H 4192 4396 50 0000 L CNN F 1 "4,7uF" H 4192 4305 50 0000 L CNN F 2 "Capacitor_SMD:C_0805_2012Metric" H 4100 4350 50 0001 C CNN F 3 "~" H 4100 4350 50 0001 C CNN 1 4100 4350 1 0 0 -1 $EndComp Wire Wire Line 4100 4250 3900 4250 Wire Wire Line 3900 4250 3900 4150 Wire Wire Line 6300 3250 5900 3250 Connection ~ 3900 4250 Wire Wire Line 3900 4250 3700 4250 Wire Wire Line 5900 3250 5900 4550 $Comp L Device:C_Small C? U 1 1 601CD6C1 P 6700 3250 AR Path="/5F53D687/601CD6C1" Ref="C?" Part="1" AR Path="/60040A68/601CD6C1" Ref="C70" Part="1" F 0 "C70" H 6400 3296 50 0000 L CNN F 1 "0,1uF" H 6400 3205 50 0000 L CNN F 2 "Capacitor_SMD:C_0805_2012Metric" H 6700 3250 50 0001 C CNN F 3 "~" H 6700 3250 50 0001 C CNN 1 6700 3250 1 0 0 -1 $EndComp Wire Wire Line 5800 3050 6700 3050 Connection ~ 5800 3050 Wire Wire Line 5800 3050 5800 2450 Wire Wire Line 6700 3150 6700 3050 $Comp L Device:C_Small C? U 1 1 601CD6CB P 7100 3250 AR Path="/5F53D687/601CD6CB" Ref="C?" Part="1" AR Path="/60040A68/601CD6CB" Ref="C71" Part="1" F 0 "C71" H 7192 3296 50 0000 L CNN F 1 "4,7uF" H 7192 3205 50 0000 L CNN F 2 "Capacitor_SMD:C_0805_2012Metric" H 7100 3250 50 0001 C CNN F 3 "~" H 7100 3250 50 0001 C CNN 1 7100 3250 1 0 0 -1 $EndComp Wire Wire Line 7100 3150 7100 3050 Wire Wire Line 7100 3050 6700 3050 Connection ~ 6700 3050 $Comp L power:GND #PWR? U 1 1 601CD6D4 P 6700 3550 AR Path="/5F53D687/601CD6D4" Ref="#PWR?" Part="1" AR Path="/60040A68/601CD6D4" Ref="#PWR0127" Part="1" F 0 "#PWR0127" H 6700 3300 50 0001 C CNN F 1 "GND" H 6705 3377 50 0000 C CNN F 2 "" H 6700 3550 50 0001 C CNN F 3 "" H 6700 3550 50 0001 C CNN 1 6700 3550 1 0 0 -1 $EndComp Wire Wire Line 6300 3250 6300 3350 $Comp L Device:C_Small C? U 1 1 601CD6DB P 6300 3450 AR Path="/5F53D687/601CD6DB" Ref="C?" Part="1" AR Path="/60040A68/601CD6DB" Ref="C68" Part="1" F 0 "C68" H 6000 3496 50 0000 L CNN F 1 "0,1uF" H 6000 3405 50 0000 L CNN F 2 "Capacitor_SMD:C_0805_2012Metric" H 6300 3450 50 0001 C CNN F 3 "~" H 6300 3450 50 0001 C CNN 1 6300 3450 1 0 0 -1 $EndComp Wire Wire Line 5800 3050 5800 4650 Wire Wire Line 6700 3350 6700 3550 Wire Wire Line 6300 3550 6700 3550 Connection ~ 6700 3550 Wire Wire Line 7100 3350 7100 3550 Wire Wire Line 7100 3550 6700 3550 Wire Wire Line 5900 4650 5800 4650 Connection ~ 5900 4650 Wire Wire Line 5900 4650 5900 4550 Connection ~ 5800 4650 Wire Wire Line 5800 4650 5800 5050 Wire Wire Line 4900 4150 3900 4150 $Comp L Device:C_Small C? U 1 1 601CD6F6 P 5400 2550 AR Path="/5F53D687/601CD6F6" Ref="C?" Part="1" AR Path="/60040A68/601CD6F6" Ref="C67" Part="1" F 0 "C67" H 5100 2596 50 0000 L CNN F 1 "33pF" H 5100 2505 50 0000 L CNN F 2 "Capacitor_SMD:C_0805_2012Metric" H 5400 2550 50 0001 C CNN F 3 "~" H 5400 2550 50 0001 C CNN 1 5400 2550 1 0 0 -1 $EndComp $Comp L power:GND #PWR? U 1 1 601CD6FE P 5400 2650 AR Path="/5F53D687/601CD6FE" Ref="#PWR?" Part="1" AR Path="/60040A68/601CD6FE" Ref="#PWR0128" Part="1" F 0 "#PWR0128" H 5400 2400 50 0001 C CNN F 1 "GND" H 5405 2477 50 0000 C CNN F 2 "" H 5400 2650 50 0001 C CNN F 3 "" H 5400 2650 50 0001 C CNN 1 5400 2650 1 0 0 -1 $EndComp Wire Wire Line 5200 4950 5200 4650 Wire Wire Line 5200 4650 5300 4650 Wire Wire Line 5300 4650 5300 5050 $Comp L Device:L_Small L? U 1 1 601CD707 P 4500 3450 AR Path="/5F53D687/601CD707" Ref="L?" Part="1" AR Path="/60040A68/601CD707" Ref="L16" Part="1" F 0 "L16" H 4548 3496 50 0000 L CNN F 1 "15uH" H 4548 3405 50 0000 L CNN F 2 "Inductor_SMD:L_0805_2012Metric" H 4500 3450 50 0001 C CNN F 3 "~" H 4500 3450 50 0001 C CNN 1 4500 3450 1 0 0 -1 $EndComp $Comp L Device:C_Small C? U 1 1 601CD70D P 4500 3650 AR Path="/5F53D687/601CD70D" Ref="C?" Part="1" AR Path="/60040A68/601CD70D" Ref="C66" Part="1" F 0 "C66" H 4592 3696 50 0000 L CNN F 1 "0,47uF" H 4592 3605 50 0000 L CNN F 2 "Capacitor_SMD:C_0805_2012Metric" H 4500 3650 50 0001 C CNN F 3 "~" H 4500 3650 50 0001 C CNN 1 4500 3650 1 0 0 -1 $EndComp $Comp L Device:R_Small R? U 1 1 601CD713 P 4900 3250 AR Path="/5F53D687/601CD713" Ref="R?" Part="1" AR Path="/60040A68/601CD713" Ref="R19" Part="1" F 0 "R19" V 5000 3250 50 0000 C CNN F 1 "0" V 5100 3250 50 0000 C CNN F 2 "Resistor_SMD:R_0805_2012Metric" H 4900 3250 50 0001 C CNN F 3 "~" H 4900 3250 50 0001 C CNN 1 4900 3250 0 1 1 0 $EndComp Wire Wire Line 5200 4650 5200 3150 Wire Wire Line 5200 3150 4400 3150 Connection ~ 5200 4650 Wire Wire Line 4400 3150 4400 3550 $Comp L Device:C_Small C? U 1 1 601CD71E P 4300 3300 AR Path="/5F53D687/601CD71E" Ref="C?" Part="1" AR Path="/60040A68/601CD71E" Ref="C65" Part="1" F 0 "C65" H 4025 3346 50 0000 L CNN F 1 "33pF" H 4025 3255 50 0000 L CNN F 2 "Capacitor_SMD:C_0805_2012Metric" H 4300 3300 50 0001 C CNN F 3 "~" H 4300 3300 50 0001 C CNN 1 4300 3300 1 0 0 -1 $EndComp $Comp L power:GND #PWR? U 1 1 601CD724 P 4300 3850 AR Path="/5F53D687/601CD724" Ref="#PWR?" Part="1" AR Path="/60040A68/601CD724" Ref="#PWR0129" Part="1" F 0 "#PWR0129" H 4300 3600 50 0001 C CNN F 1 "GND" H 4305 3677 50 0000 C CNN F 2 "" H 4300 3850 50 0001 C CNN F 3 "" H 4300 3850 50 0001 C CNN 1 4300 3850 1 0 0 -1 $EndComp Wire Wire Line 5300 4650 5300 3050 Wire Wire Line 5300 3050 4300 3050 Wire Wire Line 4300 3050 4300 3200 Connection ~ 5300 4650 Wire Wire Line 4300 3400 4300 3550 Wire Wire Line 4500 3750 4300 3750 Connection ~ 4300 3750 Wire Wire Line 4300 3750 4300 3850 $Comp L Device:C_Small C? U 1 1 601CD732 P 3900 3300 AR Path="/5F53D687/601CD732" Ref="C?" Part="1" AR Path="/60040A68/601CD732" Ref="C63" Part="1" F 0 "C63" H 3625 3346 50 0000 L CNN F 1 "33pF" H 3625 3255 50 0000 L CNN F 2 "Capacitor_SMD:C_0805_2012Metric" H 3900 3300 50 0001 C CNN F 3 "~" H 3900 3300 50 0001 C CNN 1 3900 3300 1 0 0 -1 $EndComp Wire Wire Line 5400 5150 5400 2950 Wire Wire Line 5400 2950 3900 2950 Wire Wire Line 3900 2950 3900 3200 Wire Wire Line 3900 3400 3900 3550 Wire Wire Line 3900 3550 4300 3550 Connection ~ 4300 3550 Wire Wire Line 4300 3550 4300 3750 Wire Wire Line 6100 4750 6100 4050 Wire Wire Line 6100 4050 6500 4050 Connection ~ 6500 4050 Wire Wire Line 6000 4850 6000 4550 Wire Wire Line 6000 3950 7550 3950 Wire Wire Line 6000 4550 5900 4550 Connection ~ 6000 4550 Wire Wire Line 6000 4550 6000 3950 Connection ~ 5900 4550 Wire Wire Line 7550 4150 7750 4150 Wire Wire Line 6600 4350 6600 4450 Connection ~ 6600 4350 Wire Wire Line 6600 4350 6500 4350 Wire Wire Line 7750 4150 7750 4450 Connection ~ 7750 4150 Wire Wire Line 7750 4150 7950 4150 Wire Wire Line 5000 3250 5100 3250 $Comp L Device:L_Small L? U 1 1 601CD751 P 3600 3850 AR Path="/5F53D687/601CD751" Ref="L?" Part="1" AR Path="/60040A68/601CD751" Ref="L15" Part="1" F 0 "L15" H 3400 3900 50 0000 L CNN F 1 "600" H 3400 3800 50 0000 L CNN F 2 "Inductor_SMD:L_0805_2012Metric" H 3600 3850 50 0001 C CNN F 3 "~" H 3600 3850 50 0001 C CNN 1 3600 3850 1 0 0 -1 $EndComp $Comp L power:+3V3 #PWR? U 1 1 601CD757 P 3600 3750 AR Path="/5F53D687/601CD757" Ref="#PWR?" Part="1" AR Path="/60040A68/601CD757" Ref="#PWR0130" Part="1" F 0 "#PWR0130" H 3600 3600 50 0001 C CNN F 1 "+3V3" H 3615 3923 50 0000 C CNN F 2 "" H 3600 3750 50 0001 C CNN F 3 "" H 3600 3750 50 0001 C CNN 1 3600 3750 1 0 0 -1 $EndComp Wire Wire Line 4400 3550 4500 3550 Connection ~ 4500 3550 Wire Wire Line 4800 3250 4500 3250 Wire Wire Line 4500 3250 4500 3350 Wire Wire Line 3600 3950 3600 4150 Wire Wire Line 3600 4150 3900 4150 Connection ~ 3900 4150 $Comp L power:GND #PWR? U 1 1 601D8622 P 7200 4450 AR Path="/5F53D687/601D8622" Ref="#PWR?" Part="1" AR Path="/60040A68/601D8622" Ref="#PWR0131" Part="1" F 0 "#PWR0131" H 7200 4200 50 0001 C CNN F 1 "GND" H 7205 4277 50 0000 C CNN F 2 "" H 7200 4450 50 0001 C CNN F 3 "" H 7200 4450 50 0001 C CNN 1 7200 4450 1 0 0 -1 $EndComp Wire Wire Line 6600 4450 7200 4450 Wire Wire Line 7750 4450 7200 4450 Connection ~ 7200 4450 $Comp L power:GND #PWR? U 1 1 601E2FD1 P 3900 4450 AR Path="/5F53D687/601E2FD1" Ref="#PWR?" Part="1" AR Path="/60040A68/601E2FD1" Ref="#PWR0132" Part="1" F 0 "#PWR0132" H 3900 4200 50 0001 C CNN F 1 "GND" H 3905 4277 50 0000 C CNN F 2 "" H 3900 4450 50 0001 C CNN F 3 "" H 3900 4450 50 0001 C CNN 1 3900 4450 1 0 0 -1 $EndComp Wire Wire Line 3700 4450 3900 4450 Wire Wire Line 4100 4450 3900 4450 Connection ~ 3900 4450 Text HLabel 4800 4750 0 50 UnSpc ~ 0 PWR_VDDA Text HLabel 4800 4850 0 50 UnSpc ~ 0 PWR_VLXSMPS Text HLabel 4800 4950 0 50 UnSpc ~ 0 PWR_VFBSMPS Text HLabel 4800 5050 0 50 UnSpc ~ 0 PWR_VDDRF1V55 Text HLabel 4800 5150 0 50 UnSpc ~ 0 PWR_VDDPA Text HLabel 6200 5150 2 50 UnSpc ~ 0 PWR_VDDRF Text HLabel 6200 5050 2 50 UnSpc ~ 0 PWR_VDD1 Text HLabel 6200 4950 2 50 UnSpc ~ 0 PWR_VDD2 Text HLabel 6200 4850 2 50 UnSpc ~ 0 PWR_VDDSMPS Text HLabel 6200 4750 2 50 UnSpc ~ 0 PWR_VBAT Wire Wire Line 4800 5150 5400 5150 Wire Wire Line 4800 5050 5300 5050 Wire Wire Line 4800 4950 5200 4950 Wire Wire Line 4800 4850 5100 4850 Wire Wire Line 4800 4750 4900 4750 Wire Wire Line 6200 4750 6100 4750 Wire Wire Line 6200 4850 6000 4850 Wire Wire Line 6200 4950 5900 4950 Wire Wire Line 6200 5050 5800 5050 Wire Wire Line 6200 5150 5600 5150 Wire Wire Line 5100 4850 5100 3250 Wire Wire Line 4900 4750 4900 4150 Wire Wire Line 5400 2450 5600 2450 Wire Wire Line 5600 2450 5800 2450 Connection ~ 5600 2450 Wire Wire Line 5600 5150 5600 2450 Wire Wire Line 5900 4650 5900 4950 $EndSCHEMATC