Rework stability compensation of opamp

frontend.sch

@@ -429,7 +429,7 @@ L Device:C C313
 U 1 1 5E2394E4
 P 6250 4650
 F 0 "C313" V 6502 4650 50  0000 C CNN
-F 1 "10u" V 6411 4650 50  0000 C CNN
+F 1 "Bridge" V 6411 4650 50  0000 C CNN
 F 2 "Capacitor_SMD:C_0603_1608Metric" H 6288 4500 50  0001 C CNN
 F 3 "~" H 6250 4650 50  0001 C CNN
 	1    6250 4650
@@ -691,24 +691,22 @@ Wire Wire Line
 	4350 5100 4350 4350
 Wire Wire Line
 	4350 4350 5600 4350
-Wire Wire Line
-	5600 4350 5600 4250
 Connection ~ 4350 4350
 Wire Wire Line
 	4350 4350 4350 4000
 $Comp
 L Device:R R314
 U 1 1 5E3A5DAA
-P 5600 4100
-F 0 "R314" H 5670 4146 50  0000 L CNN
-F 1 "5k 0.1%" H 5670 4055 50  0000 L CNN
-F 2 "Resistor_SMD:R_0603_1608Metric" V 5530 4100 50  0001 C CNN
-F 3 "~" H 5600 4100 50  0001 C CNN
-	1    5600 4100
+P 5600 4200
+F 0 "R314" H 5670 4246 50  0000 L CNN
+F 1 "5k 0.1%" H 5670 4155 50  0000 L CNN
+F 2 "Resistor_SMD:R_0603_1608Metric" V 5530 4200 50  0001 C CNN
+F 3 "~" H 5600 4200 50  0001 C CNN
+	1    5600 4200
 	-1   0    0    1   
 $EndComp
 Wire Wire Line
-	5600 3950 5600 3900
+	5600 4050 5600 3900
 Connection ~ 5600 3900
 Wire Notes Line
 	5200 3950 5700 3950
@@ -930,23 +928,12 @@ L Device:R R317
 U 1 1 5DB0C2DA
 P 6250 4050
 F 0 "R317" V 6043 4050 50  0000 C CNN
-F 1 "250" V 6134 4050 50  0000 C CNN
+F 1 "680" V 6134 4050 50  0000 C CNN
 F 2 "Resistor_SMD:R_0603_1608Metric" V 6180 4050 50  0001 C CNN
 F 3 "~" H 6250 4050 50  0001 C CNN
 	1    6250 4050
 	-1   0    0    1   
 $EndComp
-$Comp
-L Device:C C314
-U 1 1 5E82B184
-P 6700 4650
-F 0 "C314" V 6952 4650 50  0000 C CNN
-F 1 "2u2" V 6861 4650 50  0000 C CNN
-F 2 "Capacitor_SMD:C_0603_1608Metric" H 6738 4500 50  0001 C CNN
-F 3 "~" H 6700 4650 50  0001 C CNN
-	1    6700 4650
-	1    0    0    -1  
-$EndComp
 Wire Wire Line
 	6700 4500 6700 4350
 Wire Wire Line
@@ -1038,9 +1025,37 @@ F 3 "" H 4650 1150 50  0001 C CNN
 	1    0    0    -1  
 $EndComp
 Wire Wire Line
-	5200 3900 5600 3900
+	5200 3900 5250 3900
 Wire Wire Line
 	2050 3600 2450 3600
 Wire Wire Line
 	2000 5550 2400 5550
+$Comp
+L Device:R R319
+U 1 1 5E6300E3
+P 5400 3900
+F 0 "R319" V 5193 3900 50  0000 C CNN
+F 1 "100" V 5284 3900 50  0000 C CNN
+F 2 "Resistor_SMD:R_0603_1608Metric" V 5330 3900 50  0001 C CNN
+F 3 "~" H 5400 3900 50  0001 C CNN
+	1    5400 3900
+	0    -1   -1   0   
+$EndComp
+Wire Wire Line
+	5550 3900 5600 3900
+$Comp
+L Device:C C314
+U 1 1 5E82B184
+P 6700 4650
+F 0 "C314" V 6952 4650 50  0000 C CNN
+F 1 "DNP" V 6861 4650 50  0000 C CNN
+F 2 "Capacitor_SMD:C_0603_1608Metric" H 6738 4500 50  0001 C CNN
+F 3 "~" H 6700 4650 50  0001 C CNN
+	1    6700 4650
+	1    0    0    -1  
+$EndComp
+Text Notes 5350 4700 0    50   ~ 0
+This must be shorted\n
+Text Notes 6800 4400 0    50   ~ 0
+If the circuit oscillates, try:\nR319 = 0 Ohm\nR317 = 250 Ohm\nC313 = 10 uF\nC314 = 2.2 uF\n
 $EndSCHEMATC