Change schematic for v1.3

* Use DCDC buck converter for digital 3V3 supply.
* Add shielding for OPAmp section
* Change frontend amplifier to an instrumentation amplifier design
This commit is contained in:
Mario Hüttel 2020-11-17 18:59:20 +01:00
parent be3c30d734
commit 07e0ea3191
5 changed files with 1719 additions and 1079 deletions

455
digital-supply.sch Normal file
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@ -0,0 +1,455 @@
EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 3 4
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Text HLabel 1000 1000 0 50 Input ~ 0
Vin
Text HLabel 8050 1200 2 50 Output ~ 0
3V3out
Wire Wire Line
1000 1000 1250 1000
Wire Wire Line
1250 1000 1250 1350
$Comp
L Device:C C27
U 1 1 5FB7CC6B
P 1250 1500
F 0 "C27" H 1365 1546 50 0000 L CNN
F 1 "100n" H 1365 1455 50 0000 L CNN
F 2 "" H 1288 1350 50 0001 C CNN
F 3 "~" H 1250 1500 50 0001 C CNN
1 1250 1500
1 0 0 -1
$EndComp
$Comp
L Device:C C28
U 1 1 5FB7D1DC
P 1650 1500
F 0 "C28" H 1765 1546 50 0000 L CNN
F 1 "100n" H 1765 1455 50 0000 L CNN
F 2 "" H 1688 1350 50 0001 C CNN
F 3 "~" H 1650 1500 50 0001 C CNN
1 1650 1500
1 0 0 -1
$EndComp
$Comp
L Device:C C29
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F 1 "100n" H 2165 1455 50 0000 L CNN
F 2 "" H 2088 1350 50 0001 C CNN
F 3 "~" H 2050 1500 50 0001 C CNN
1 2050 1500
1 0 0 -1
$EndComp
Wire Wire Line
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Wire Wire Line
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Connection ~ 1250 1000
Wire Wire Line
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Wire Wire Line
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Connection ~ 1650 1000
$Comp
L Device:C C30
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F 1 "10u" H 2565 1455 50 0000 L CNN
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F 3 "~" H 2450 1500 50 0001 C CNN
1 2450 1500
1 0 0 -1
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Wire Wire Line
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Wire Wire Line
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Connection ~ 2050 1000
Wire Wire Line
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$Comp
L power:GND #PWR057
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F 2 "" H 2450 1950 50 0001 C CNN
F 3 "" H 2450 1950 50 0001 C CNN
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Wire Wire Line
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$Comp
L power:GND #PWR056
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F 3 "" H 2050 1950 50 0001 C CNN
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Wire Wire Line
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F 3 "" H 1650 1950 50 0001 C CNN
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Wire Wire Line
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F 3 "" H 1250 1950 50 0001 C CNN
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 3300 1000
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Wire Wire Line
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F 3 "~" H 4900 950 50 0001 C CNN
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Wire Wire Line
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Connection ~ 4900 1200
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
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F 3 "" H 4050 1950 50 0001 C CNN
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F 1 "3k4" V 5234 1400 50 0000 C CNN
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F 3 "~" H 5350 1400 50 0001 C CNN
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$Comp
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F 1 "1k02" H 4920 1655 50 0000 L CNN
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F 3 "~" H 4850 1700 50 0001 C CNN
1 4850 1700
1 0 0 -1
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F 3 "" H 4850 1950 50 0001 C CNN
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1 0 0 -1
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 4850 1400
Wire Wire Line
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Wire Wire Line
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$Comp
L Device:L L1
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P 6000 1200
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F 1 "15u" V 6099 1200 50 0000 C CNN
F 2 "" H 6000 1200 50 0001 C CNN
F 3 "~" H 6000 1200 50 0001 C CNN
1 6000 1200
0 -1 -1 0
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 6200 1200
Wire Wire Line
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$Comp
L Device:L L2
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F 3 "~" H 6750 1200 50 0001 C CNN
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Wire Wire Line
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Wire Wire Line
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$Comp
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F 3 "~" H 6950 1400 50 0001 C CNN
1 6950 1400
1 0 0 -1
$EndComp
$Comp
L Device:C C34
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F 3 "~" H 6950 1750 50 0001 C CNN
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1 0 0 -1
$EndComp
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 6950 1550
Wire Wire Line
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Wire Wire Line
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$Comp
L power:GND #PWR063
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P 6950 1950
F 0 "#PWR063" H 6950 1700 50 0001 C CNN
F 1 "GND" H 6955 1777 50 0000 C CNN
F 2 "" H 6950 1950 50 0001 C CNN
F 3 "" H 6950 1950 50 0001 C CNN
1 6950 1950
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR064
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F 0 "#PWR064" H 7350 1700 50 0001 C CNN
F 1 "GND" H 7355 1777 50 0000 C CNN
F 2 "" H 7350 1950 50 0001 C CNN
F 3 "" H 7350 1950 50 0001 C CNN
1 7350 1950
1 0 0 -1
$EndComp
$Comp
L Device:CP C36
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F 1 "47u" H 7818 1705 50 0000 L CNN
F 2 "" H 7738 1600 50 0001 C CNN
F 3 "~" H 7700 1750 50 0001 C CNN
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1 0 0 -1
$EndComp
Wire Wire Line
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Connection ~ 7700 1200
Wire Wire Line
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Wire Wire Line
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$Comp
L power:GND #PWR065
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P 7700 1950
F 0 "#PWR065" H 7700 1700 50 0001 C CNN
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F 3 "" H 7700 1950 50 0001 C CNN
1 7700 1950
1 0 0 -1
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$Comp
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F 0 "C32" H 6415 1796 50 0000 L CNN
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F 3 "~" H 6300 1750 50 0001 C CNN
1 6300 1750
1 0 0 -1
$EndComp
$Comp
L Device:C C33
U 1 1 5FB9C41D
P 6600 1750
F 0 "C33" H 6715 1796 50 0000 L CNN
F 1 "10u" H 6715 1705 50 0000 L CNN
F 2 "" H 6638 1600 50 0001 C CNN
F 3 "~" H 6600 1750 50 0001 C CNN
1 6600 1750
1 0 0 -1
$EndComp
Wire Wire Line
6600 1600 6600 1200
Connection ~ 6600 1200
Wire Wire Line
6300 1600 6300 1200
Connection ~ 6300 1200
Wire Wire Line
6300 1200 6600 1200
$Comp
L power:GND #PWR061
U 1 1 5FB9DF0B
P 6300 1950
F 0 "#PWR061" H 6300 1700 50 0001 C CNN
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F 2 "" H 6300 1950 50 0001 C CNN
F 3 "" H 6300 1950 50 0001 C CNN
1 6300 1950
1 0 0 -1
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Wire Wire Line
6300 1950 6300 1900
$Comp
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U 1 1 5FB9ECB4
P 6600 1950
F 0 "#PWR062" H 6600 1700 50 0001 C CNN
F 1 "GND" H 6605 1777 50 0000 C CNN
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F 3 "" H 6600 1950 50 0001 C CNN
1 6600 1950
1 0 0 -1
$EndComp
Wire Wire Line
6600 1950 6600 1900
$Comp
L Device:D_Schottky D4
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P 5650 1650
F 0 "D4" V 5604 1730 50 0000 L CNN
F 1 "MSS1P5" V 5695 1730 50 0000 L CNN
F 2 "" H 5650 1650 50 0001 C CNN
F 3 "~" H 5650 1650 50 0001 C CNN
1 5650 1650
0 1 1 0
$EndComp
$Comp
L power:GND #PWR060
U 1 1 5FBDB89C
P 5650 1950
F 0 "#PWR060" H 5650 1700 50 0001 C CNN
F 1 "GND" H 5655 1777 50 0000 C CNN
F 2 "" H 5650 1950 50 0001 C CNN
F 3 "" H 5650 1950 50 0001 C CNN
1 5650 1950
1 0 0 -1
$EndComp
Wire Wire Line
5650 1800 5650 1950
Wire Wire Line
5650 1500 5650 1200
Connection ~ 5650 1200
Wire Wire Line
5650 1200 5850 1200
$Comp
L Device:CP C35
U 1 1 5FBBC09B
P 7350 1750
F 0 "C35" H 7468 1796 50 0000 L CNN
F 1 "47u" H 7468 1705 50 0000 L CNN
F 2 "" H 7388 1600 50 0001 C CNN
F 3 "~" H 7350 1750 50 0001 C CNN
1 7350 1750
1 0 0 -1
$EndComp
$EndSCHEMATC

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@ -290,6 +290,28 @@ X ~~ 4 0 300 100 D 50 50 1 1 P
ENDDRAW
ENDDEF
#
# Device_D_Schottky
#
DEF Device_D_Schottky D 0 40 N N 1 F N
F0 "D" 0 100 50 H V C CNN
F1 "Device_D_Schottky" 0 -100 50 H V C CNN
F2 "" 0 0 50 H I C CNN
F3 "" 0 0 50 H I C CNN
$FPLIST
TO-???*
*_Diode_*
*SingleDiode*
D_*
$ENDFPLIST
DRAW
P 2 0 1 0 50 0 -50 0 N
P 4 0 1 10 50 50 50 -50 -50 0 50 50 N
P 6 0 1 10 -75 25 -75 50 -50 50 -50 -50 -25 -50 -25 -25 N
X K 1 -150 0 100 R 50 50 1 1 P
X A 2 150 0 100 L 50 50 1 1 P
ENDDRAW
ENDDEF
#
# Device_Ferrite_Bead_Small
#
DEF Device_Ferrite_Bead_Small FB 0 0 N Y 1 F N
@ -329,6 +351,29 @@ X ~ 2 0 -150 50 U 50 50 1 1 P
ENDDRAW
ENDDEF
#
# Device_L
#
DEF Device_L L 0 40 N N 1 F N
F0 "L" -50 0 50 V V C CNN
F1 "Device_L" 75 0 50 V V C CNN
F2 "" 0 0 50 H I C CNN
F3 "" 0 0 50 H I C CNN
$FPLIST
Choke_*
*Coil*
Inductor_*
L_*
$ENDFPLIST
DRAW
A 0 -75 25 -899 899 0 1 0 N 0 -100 0 -50
A 0 -25 25 -899 899 0 1 0 N 0 -50 0 0
A 0 25 25 -899 899 0 1 0 N 0 0 0 50
A 0 75 25 -899 899 0 1 0 N 0 50 0 100
X 1 1 0 150 50 D 50 50 1 1 P
X 2 2 0 -150 50 U 50 50 1 1 P
ENDDRAW
ENDDEF
#
# Device_LED
#
DEF Device_LED D 0 40 N N 1 F N
@ -392,6 +437,43 @@ X ~ 2 0 -150 50 U 50 50 1 1 P
ENDDRAW
ENDDEF
#
# Device_RF_Shield_Two_Pieces
#
DEF Device_RF_Shield_Two_Pieces J 0 40 Y Y 1 F N
F0 "J" 0 200 50 H V C CNN
F1 "Device_RF_Shield_Two_Pieces" 0 100 50 H V C CNN
F2 "" 0 -100 50 H I C CNN
F3 "" 0 -100 50 H I C CNN
DRAW
P 2 0 1 10 -600 -200 -600 -100 N
P 2 0 1 10 -600 -50 -600 50 N
P 2 0 1 10 -600 100 -600 200 N
P 2 0 1 10 -500 300 -400 300 N
P 2 0 1 10 -400 -300 -500 -300 N
P 2 0 1 10 -250 -300 -350 -300 N
P 2 0 1 10 -250 300 -350 300 N
P 2 0 1 10 -100 -300 -200 -300 N
P 2 0 1 10 -100 300 -200 300 N
P 2 0 1 10 -50 -300 50 -300 N
P 2 0 1 10 50 300 -50 300 N
P 2 0 1 10 100 -300 200 -300 N
P 2 0 1 10 200 300 100 300 N
P 2 0 1 10 250 -300 350 -300 N
P 2 0 1 10 350 300 250 300 N
P 2 0 1 10 400 -300 500 -300 N
P 2 0 1 10 500 300 400 300 N
P 2 0 1 10 600 -200 600 -100 N
P 2 0 1 10 600 -50 600 50 N
P 2 0 1 10 600 100 600 200 N
P 3 0 1 10 -600 250 -600 300 -550 300 N
P 3 0 1 10 -550 -300 -600 -300 -600 -250 N
P 3 0 1 10 550 -300 600 -300 600 -250 N
P 3 0 1 10 600 250 600 300 550 300 N
P 4 0 1 10 -700 200 -700 450 700 450 700 200 N
X Shield 1 0 -400 100 U 50 50 1 1 P
ENDDRAW
ENDDEF
#
# Device_R_POT
#
DEF Device_R_POT RV 0 40 Y N 1 F N
@ -674,28 +756,6 @@ X VI 3 -300 0 100 R 50 50 1 1 W
ENDDRAW
ENDDEF
#
# Regulator_Linear_AZ1117-3.3
#
DEF Regulator_Linear_AZ1117-3.3 U 0 10 Y Y 1 F N
F0 "U" -150 125 50 H V C CNN
F1 "Regulator_Linear_AZ1117-3.3" 0 125 50 H V L CNN
F2 "" 0 250 50 H I C CIN
F3 "" 0 0 50 H I C CNN
$FPLIST
SOT?223*
SOT?89*
TO?220*
TO?252*
TO?263*
$ENDFPLIST
DRAW
S -200 75 200 -200 0 1 10 f
X GND 1 0 -300 100 U 50 50 1 1 W
X VO 2 300 0 100 L 50 50 1 1 w
X VI 3 -300 0 100 R 50 50 1 1 W
ENDDRAW
ENDDEF
#
# Regulator_Linear_AZ1117-5.0
#
DEF Regulator_Linear_AZ1117-5.0 U 0 10 Y Y 1 F N
@ -719,6 +779,28 @@ X VI 3 -300 0 100 R 50 50 1 1 W
ENDDRAW
ENDDEF
#
# Regulator_Switching_LMR14206
#
DEF Regulator_Switching_LMR14206 U 0 40 Y Y 1 F N
F0 "U" -400 450 50 H V L CNN
F1 "Regulator_Switching_LMR14206" -400 350 50 H V L CNN
F2 "Package_TO_SOT_SMD:SOT-23-6" 0 -500 50 H I C CIN
F3 "" -400 450 50 H I C CNN
ALIAS LMR16006YQ3 LMR16006YQ5 LMR14206
$FPLIST
SOT?23*
$ENDFPLIST
DRAW
S -400 300 400 -300 0 1 10 f
X CB 1 500 200 100 L 50 50 1 1 I
X GND 2 0 -400 100 U 50 50 1 1 W
X FB 3 500 -200 100 L 50 50 1 1 I
X ~SHDN 4 -500 0 100 R 50 50 1 1 I
X VIN 5 -500 200 100 R 50 50 1 1 W
X SW 6 500 0 100 L 50 50 1 1 O
ENDDRAW
ENDDEF
#
# Transistor_FET_BSS123
#
DEF Transistor_FET_BSS123 Q 0 20 Y N 1 F N

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stm.sch

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