audiomixer/schematic/mixeroutput/outputbuffer.sch

EESchema Schematic File Version 4
LIBS:mixeroutput-cache
EELAYER 26 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 2 2
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Device:Opamp_Dual_Generic U?
U 1 1 5C0923EF
P 2600 3000
F 0 "U?" H 2650 3150 50  0000 C CNN
F 1 "Opamp_Dual_Generic" H 2700 3250 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 2600 3000 50  0001 C CNN
F 3 "~" H 2600 3000 50  0001 C CNN
	1    2600 3000
	1    0    0    1   
$EndComp
$Comp
L Device:Opamp_Dual_Generic U?
U 2 1 5C0923F6
P 2600 4250
F 0 "U?" H 2700 4400 50  0000 C CNN
F 1 "Opamp_Dual_Generic" H 2700 4500 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 2600 4250 50  0001 C CNN
F 3 "~" H 2600 4250 50  0001 C CNN
	2    2600 4250
	1    0    0    1   
$EndComp
$Comp
L Device:Opamp_Dual_Generic U?
U 3 1 5C0923FD
P 2750 1300
F 0 "U?" H 2708 1346 50  0000 L CNN
F 1 "Opamp_Dual_Generic" H 2708 1255 50  0000 L CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 2750 1300 50  0001 C CNN
F 3 "~" H 2750 1300 50  0001 C CNN
	3    2750 1300
	1    0    0    -1  
$EndComp
$Comp
L Device:R RfbA?
U 1 1 5C092405
P 2600 2550
F 0 "RfbA?" V 2400 2550 50  0000 C CNN
F 1 "10k" V 2500 2550 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 2530 2550 50  0001 C CNN
F 3 "~" H 2600 2550 50  0001 C CNN
F 4 "Metallfilm" V 2600 2550 50  0001 C CNN "Notes"
	1    2600 2550
	0    -1   -1   0   
$EndComp
Wire Wire Line
	2900 3000 2900 2550
Wire Wire Line
	2900 2550 2750 2550
Wire Wire Line
	2450 2550 2300 2550
Wire Wire Line
	2300 2550 2300 2900
$Comp
L power:GNDA #PWR?
U 1 1 5C092417
P 2050 3400
F 0 "#PWR?" H 2050 3150 50  0001 C CNN
F 1 "GNDA" H 2055 3227 50  0000 C CNN
F 2 "" H 2050 3400 50  0001 C CNN
F 3 "" H 2050 3400 50  0001 C CNN
	1    2050 3400
	1    0    0    -1  
$EndComp
$Comp
L Device:C CLPA
U 1 1 5C09241D
P 2600 2300
F 0 "CLPA" V 2348 2300 50  0000 C CNN
F 1 "330p" V 2439 2300 50  0000 C CNN
F 2 "Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm" H 2638 2150 50  0001 C CNN
F 3 "~" H 2600 2300 50  0001 C CNN
	1    2600 2300
	0    1    1    0   
$EndComp
Wire Wire Line
	2750 2300 2900 2300
Wire Wire Line
	2900 2300 2900 2550
Connection ~ 2900 2550
Wire Wire Line
	2450 2300 2300 2300
Wire Wire Line
	2300 2300 2300 2550
Connection ~ 2300 2550
Text Notes 2750 2300 0    50   ~ 0
Lowpass:\nf_c =    1 /\n     (2 * Pi * R * C)
Connection ~ 2300 2900
$Comp
L Device:C CU2+?
U 1 1 5C09243A
P 2400 1150
F 0 "CU2+?" H 2000 1200 50  0000 L CNN
F 1 "100n" H 2050 1100 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm" H 2438 1000 50  0001 C CNN
F 3 "~" H 2400 1150 50  0001 C CNN
	1    2400 1150
	1    0    0    -1  
$EndComp
$Comp
L power:GNDA #PWR?
U 1 1 5C092441
P 2250 1300
F 0 "#PWR?" H 2250 1050 50  0001 C CNN
F 1 "GNDA" H 2100 1250 50  0000 C CNN
F 2 "" H 2250 1300 50  0001 C CNN
F 3 "" H 2250 1300 50  0001 C CNN
	1    2250 1300
	1    0    0    -1  
$EndComp
$Comp
L Device:C CU2-?
U 1 1 5C092447
P 2400 1450
F 0 "CU2-?" H 2000 1400 50  0000 L CNN
F 1 "100n" H 2050 1300 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm" H 2438 1300 50  0001 C CNN
F 3 "~" H 2400 1450 50  0001 C CNN
	1    2400 1450
	1    0    0    -1  
$EndComp
Wire Wire Line
	2400 1300 2250 1300
Connection ~ 2400 1300
Wire Wire Line
	2650 1000 2400 1000
Wire Wire Line
	2650 1600 2400 1600
$Comp
L power:GNDA #PWR?
U 1 1 5C092452
P 2050 4650
F 0 "#PWR?" H 2050 4400 50  0001 C CNN
F 1 "GNDA" H 2055 4477 50  0000 C CNN
F 2 "" H 2050 4650 50  0001 C CNN
F 3 "" H 2050 4650 50  0001 C CNN
	1    2050 4650
	1    0    0    -1  
$EndComp
$Comp
L Device:R RfbB?
U 1 1 5C092460
P 2600 3800
F 0 "RfbB?" V 2400 3800 50  0000 C CNN
F 1 "10k" V 2500 3800 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 2530 3800 50  0001 C CNN
F 3 "~" H 2600 3800 50  0001 C CNN
F 4 "Metallfilm" V 2600 3800 50  0001 C CNN "Notes"
	1    2600 3800
	0    -1   -1   0   
$EndComp
$Comp
L Device:C CLPB
U 1 1 5C092467
P 2600 3600
F 0 "CLPB" V 2348 3600 50  0000 C CNN
F 1 "330p" V 2439 3600 50  0000 C CNN
F 2 "Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm" H 2638 3450 50  0001 C CNN
F 3 "~" H 2600 3600 50  0001 C CNN
	1    2600 3600
	0    1    1    0   
$EndComp
Wire Wire Line
	2300 3600 2300 3800
Connection ~ 2300 4150
Wire Wire Line
	2750 3800 2900 3800
Wire Wire Line
	2900 3800 2900 4250
Wire Wire Line
	2900 3600 2900 3800
Connection ~ 2900 3800
Wire Wire Line
	2450 3800 2300 3800
Connection ~ 2300 3800
Wire Wire Line
	2300 3800 2300 4150
$Comp
L Device:R RoutB
U 1 1 5C092486
P 3150 4250
F 0 "RoutB" V 3357 4250 50  0000 C CNN
F 1 "220" V 3266 4250 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3080 4250 50  0001 C CNN
F 3 "~" H 3150 4250 50  0001 C CNN
F 4 "Metallfilm" V 3150 4250 50  0001 C CNN "Notes"
	1    3150 4250
	0    -1   -1   0   
$EndComp
$Comp
L Device:R RoutA
U 1 1 5C09248E
P 3150 3000
F 0 "RoutA" V 3357 3000 50  0000 C CNN
F 1 "220" V 3266 3000 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3080 3000 50  0001 C CNN
F 3 "~" H 3150 3000 50  0001 C CNN
F 4 "Metallfilm" V 3150 3000 50  0001 C CNN "Notes"
	1    3150 3000
	0    -1   -1   0   
$EndComp
Wire Wire Line
	3000 4250 2900 4250
Connection ~ 2900 4250
Wire Wire Line
	2900 3000 3000 3000
Connection ~ 2900 3000
Wire Wire Line
	1900 4150 2300 4150
Wire Wire Line
	1900 2900 2300 2900
Wire Wire Line
	2300 3600 2450 3600
Wire Wire Line
	2750 3600 2900 3600
$Comp
L power:-15V #PWR?
U 1 1 5C0924A3
P 2650 1600
F 0 "#PWR?" H 2650 1700 50  0001 C CNN
F 1 "-15V" H 2665 1773 50  0000 C CNN
F 2 "" H 2650 1600 50  0001 C CNN
F 3 "" H 2650 1600 50  0001 C CNN
	1    2650 1600
	-1   0    0    1   
$EndComp
$Comp
L power:+15V #PWR?
U 1 1 5C0924AA
P 2650 1000
F 0 "#PWR?" H 2650 850 50  0001 C CNN
F 1 "+15V" H 2665 1173 50  0000 C CNN
F 2 "" H 2650 1000 50  0001 C CNN
F 3 "" H 2650 1000 50  0001 C CNN
	1    2650 1000
	1    0    0    -1  
$EndComp
Text HLabel 1900 2900 0    50   Input ~ 0
inA
Text HLabel 1900 4150 0    50   Input ~ 0
inB
Text HLabel 3450 3000 2    50   Output ~ 0
outA
Text HLabel 3450 4250 2    50   Output ~ 0
outB
Wire Wire Line
	3300 4250 3450 4250
Wire Wire Line
	3300 3000 3450 3000
$Comp
L Device:R RlowA?
U 1 1 5C0560AB
P 2050 3250
F 0 "RlowA?" V 2257 3250 50  0000 C CNN
F 1 "1k" V 2166 3250 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 1980 3250 50  0001 C CNN
F 3 "~" H 2050 3250 50  0001 C CNN
F 4 "Metallfilm" V 2050 3250 50  0001 C CNN "Notes"
	1    2050 3250
	1    0    0    -1  
$EndComp
$Comp
L Device:R RlowB?
U 1 1 5C05615C
P 2050 4500
F 0 "RlowB?" V 2257 4500 50  0000 C CNN
F 1 "1k" V 2166 4500 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 1980 4500 50  0001 C CNN
F 3 "~" H 2050 4500 50  0001 C CNN
F 4 "Metallfilm" V 2050 4500 50  0001 C CNN "Notes"
	1    2050 4500
	1    0    0    -1  
$EndComp
Wire Wire Line
	2050 3100 2300 3100
Wire Wire Line
	2050 4350 2300 4350
Connection ~ 2650 1000
Connection ~ 2650 1600
Text Notes 700  3350 0    50   ~ 0
Rlow for minimum offset error\ndue to input bias current.\nRlow = R1//R2//R3 ... (inputs)
$EndSCHEMATC