334 lines
7.3 KiB
Plaintext
334 lines
7.3 KiB
Plaintext
EESchema Schematic File Version 4
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EELAYER 30 0
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EELAYER END
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$Descr A4 11693 8268
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encoding utf-8
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Sheet 5 7
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Title "icE1usb - E1 interface bias generation"
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Date "2020-08-26"
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Rev "1.0"
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Comp ""
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Comment1 "CERN-OHL-S"
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Comment2 "(C) 2020 Sylvain Munaut"
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Comment3 ""
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Comment4 ""
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$EndDescr
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Text HLabel 2000 3500 0 50 Input ~ 0
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bias0
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Text HLabel 2000 4500 0 50 Input ~ 0
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bias1
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Text HLabel 5500 2500 2 50 Output ~ 0
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bias_a_p
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Text HLabel 5500 3500 2 50 Output ~ 0
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bias_a_n
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Text HLabel 5500 4500 2 50 Output ~ 0
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bias_b_p
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Text HLabel 5500 5500 2 50 Output ~ 0
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bias_b_n
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$Comp
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L Device:R_Small R20
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U 1 1 5F4D7D0D
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P 4700 2500
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F 0 "R20" V 4504 2500 50 0000 C CNN
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F 1 "0R" V 4595 2500 50 0000 C CNN
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F 2 "Resistor_SMD:R_0603_1608Metric" H 4700 2500 50 0001 C CNN
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F 3 "~" H 4700 2500 50 0001 C CNN
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1 4700 2500
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0 1 1 0
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$EndComp
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$Comp
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L Device:C_Small C27
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U 1 1 5F4D81DA
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P 3000 3700
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F 0 "C27" H 3092 3746 50 0000 L CNN
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F 1 "1u" H 3092 3655 50 0000 L CNN
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F 2 "Capacitor_SMD:C_0603_1608Metric" H 3000 3700 50 0001 C CNN
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F 3 "~" H 3000 3700 50 0001 C CNN
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1 3000 3700
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1 0 0 -1
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$EndComp
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$Comp
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L Device:C_Small C28
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U 1 1 5F4D8409
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P 3000 4700
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F 0 "C28" H 3092 4746 50 0000 L CNN
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F 1 "1u" H 3092 4655 50 0000 L CNN
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F 2 "Capacitor_SMD:C_0603_1608Metric" H 3000 4700 50 0001 C CNN
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F 3 "~" H 3000 4700 50 0001 C CNN
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1 3000 4700
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1 0 0 -1
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$EndComp
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$Comp
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L power:GND #PWR057
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U 1 1 5F4D8911
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P 3000 3900
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F 0 "#PWR057" H 3000 3650 50 0001 C CNN
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F 1 "GND" H 3005 3727 50 0000 C CNN
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F 2 "" H 3000 3900 50 0001 C CNN
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F 3 "" H 3000 3900 50 0001 C CNN
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1 3000 3900
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1 0 0 -1
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$EndComp
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$Comp
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L power:GND #PWR058
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U 1 1 5F4D8C18
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P 3000 4900
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F 0 "#PWR058" H 3000 4650 50 0001 C CNN
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F 1 "GND" H 3005 4727 50 0000 C CNN
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F 2 "" H 3000 4900 50 0001 C CNN
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F 3 "" H 3000 4900 50 0001 C CNN
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1 3000 4900
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1 0 0 -1
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$EndComp
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Wire Wire Line
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3000 4800 3000 4900
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Wire Wire Line
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2700 4500 3000 4500
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Wire Wire Line
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3000 4500 3000 4600
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Wire Wire Line
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2500 4500 2000 4500
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Wire Wire Line
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2000 3500 2500 3500
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Wire Wire Line
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2700 3500 3000 3500
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Wire Wire Line
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3000 3500 3000 3600
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Wire Wire Line
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3000 3800 3000 3900
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$Comp
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L Device:C_Small C26
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U 1 1 5F4DA17F
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P 3000 2700
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F 0 "C26" H 3092 2746 50 0000 L CNN
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F 1 "1u" H 3092 2655 50 0000 L CNN
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F 2 "Capacitor_SMD:C_0603_1608Metric" H 3000 2700 50 0001 C CNN
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F 3 "~" H 3000 2700 50 0001 C CNN
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1 3000 2700
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1 0 0 -1
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$EndComp
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$Comp
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L s47-passive:R_Pack04_Split RN7
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U 1 1 5F4DCADF
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P 2600 2500
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F 0 "RN7" V 2404 2500 50 0000 C CNN
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F 1 "10k" V 2495 2500 50 0000 C CNN
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F 2 "Resistor_SMD:R_Array_Convex_4x0603" H 2600 2500 60 0001 C CNN
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F 3 "" H 2600 2500 60 0000 C CNN
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1 2600 2500
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0 1 1 0
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$EndComp
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$Comp
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L s47-passive:R_Pack04_Split RN7
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U 2 1 5F4DCF84
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P 2800 2700
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F 0 "RN7" H 2741 2746 50 0000 R CNN
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F 1 "10k" H 2741 2655 50 0000 R CNN
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F 2 "Resistor_SMD:R_Array_Convex_4x0603" H 2800 2700 60 0001 C CNN
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F 3 "" H 2800 2700 60 0000 C CNN
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2 2800 2700
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1 0 0 -1
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$EndComp
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$Comp
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L s47-passive:R_Pack04_Split RN7
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U 4 1 5F4DD23C
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P 2600 4500
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F 0 "RN7" V 2404 4500 50 0000 C CNN
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F 1 "10k" V 2495 4500 50 0000 C CNN
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F 2 "Resistor_SMD:R_Array_Convex_4x0603" H 2600 4500 60 0001 C CNN
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F 3 "" H 2600 4500 60 0000 C CNN
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4 2600 4500
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0 1 1 0
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$EndComp
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$Comp
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L s47-passive:R_Pack04_Split RN7
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U 3 1 5F4DD9E1
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P 2600 3500
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F 0 "RN7" V 2404 3500 50 0000 C CNN
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F 1 "10k" V 2495 3500 50 0000 C CNN
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F 2 "Resistor_SMD:R_Array_Convex_4x0603" H 2600 3500 60 0001 C CNN
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F 3 "" H 2600 3500 60 0000 C CNN
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3 2600 3500
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0 1 1 0
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$EndComp
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Wire Wire Line
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2700 2500 2800 2500
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Wire Wire Line
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3000 2500 3000 2600
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Wire Wire Line
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2800 2500 2800 2600
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Connection ~ 2800 2500
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Wire Wire Line
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2800 2500 3000 2500
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$Comp
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L power:GND #PWR056
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U 1 1 5F4DFC15
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P 3000 2900
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F 0 "#PWR056" H 3000 2650 50 0001 C CNN
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F 1 "GND" H 3005 2727 50 0000 C CNN
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F 2 "" H 3000 2900 50 0001 C CNN
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F 3 "" H 3000 2900 50 0001 C CNN
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1 3000 2900
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1 0 0 -1
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$EndComp
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$Comp
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L power:GND #PWR055
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U 1 1 5F4DFEE3
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P 2800 2900
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F 0 "#PWR055" H 2800 2650 50 0001 C CNN
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F 1 "GND" H 2805 2727 50 0000 C CNN
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F 2 "" H 2800 2900 50 0001 C CNN
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F 3 "" H 2800 2900 50 0001 C CNN
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1 2800 2900
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1 0 0 -1
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$EndComp
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$Comp
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L power:+3V3 #PWR054
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U 1 1 5F4E01FD
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P 2400 2400
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F 0 "#PWR054" H 2400 2250 50 0001 C CNN
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F 1 "+3V3" H 2415 2573 50 0000 C CNN
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F 2 "" H 2400 2400 50 0001 C CNN
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F 3 "" H 2400 2400 50 0001 C CNN
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1 2400 2400
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1 0 0 -1
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$EndComp
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Wire Wire Line
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2400 2400 2400 2500
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Wire Wire Line
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2400 2500 2500 2500
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Wire Wire Line
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2800 2800 2800 2900
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Wire Wire Line
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3000 2800 3000 2900
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$Comp
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L Device:R_Small R21
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U 1 1 5F4E23E9
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P 4700 2700
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F 0 "R21" V 4804 2700 50 0000 C CNN
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F 1 "0R" V 4895 2700 50 0000 C CNN
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F 2 "Resistor_SMD:R_0603_1608Metric" H 4700 2700 50 0001 C CNN
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F 3 "~" H 4700 2700 50 0001 C CNN
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F 4 "DNP" V 4986 2700 50 0000 C CNN "DNP"
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1 4700 2700
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0 1 1 0
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$EndComp
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Text Notes 7600 2700 0 50 ~ 0
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A+
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Text Notes 8100 2700 0 50 ~ 0
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A-
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Text Notes 8600 2700 0 50 ~ 0
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B+
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Text Notes 9100 2700 0 50 ~ 0
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B-
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Text Notes 6600 3000 0 50 ~ 0
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Single Sensitivity\nDual Rail bias adjust
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Text Notes 6600 3400 0 50 ~ 0
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Dual Sensitivity\nSingle Rail bias adjust
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Text Notes 7600 3300 0 50 ~ 0
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Fixed
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Text Notes 8600 3300 0 50 ~ 0
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Fixed
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Text Notes 8100 3300 0 50 ~ 0
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Bias 0
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Text Notes 9100 3300 0 50 ~ 0
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Bias 1
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Text Notes 9100 2900 0 50 ~ 0
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Bias 1
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Text Notes 8600 2900 0 50 ~ 0
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Bias 0
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Text Notes 7600 2900 0 50 ~ 0
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Bias 0
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Text Notes 8100 2900 0 50 ~ 0
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Bias 1
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Wire Notes Line
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6500 2800 9500 2800
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Wire Notes Line
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7500 2600 7500 3500
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Wire Wire Line
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3000 4500 3500 4500
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Connection ~ 3000 4500
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Wire Wire Line
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3000 3500 3500 3500
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Connection ~ 3000 3500
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Wire Wire Line
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3000 2500 3500 2500
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Connection ~ 3000 2500
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Text Label 3500 2500 2 50 ~ 0
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bias_fixed
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Text Label 3500 3500 2 50 ~ 0
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bias_0
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Wire Wire Line
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5500 5500 4000 5500
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Text Label 4000 5500 0 50 ~ 0
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bias_1
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Wire Wire Line
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5300 4500 5500 4500
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Wire Wire Line
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4800 2700 5000 2700
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Wire Wire Line
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5000 2700 5000 2500
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Connection ~ 5000 2500
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Wire Wire Line
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5000 2500 4800 2500
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Wire Wire Line
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4600 2500 4000 2500
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Wire Wire Line
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4600 2700 4000 2700
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Wire Wire Line
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5000 2500 5300 2500
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Wire Wire Line
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5300 2500 5300 4500
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Connection ~ 5300 2500
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Wire Wire Line
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5300 2500 5500 2500
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$Comp
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L Device:R_Small R22
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U 1 1 5F50BC9B
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P 4700 3500
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F 0 "R22" V 4504 3500 50 0000 C CNN
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F 1 "0R" V 4595 3500 50 0000 C CNN
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F 2 "Resistor_SMD:R_0603_1608Metric" H 4700 3500 50 0001 C CNN
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F 3 "~" H 4700 3500 50 0001 C CNN
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1 4700 3500
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0 1 1 0
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$EndComp
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Wire Wire Line
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4600 3500 4000 3500
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Wire Wire Line
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4600 3700 4000 3700
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Wire Wire Line
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4800 3500 5000 3500
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Wire Wire Line
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4800 3700 5000 3700
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Wire Wire Line
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5000 3700 5000 3500
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Connection ~ 5000 3500
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Wire Wire Line
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5000 3500 5500 3500
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Text Label 4000 2500 0 50 ~ 0
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bias_fixed
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Text Label 4000 2700 0 50 ~ 0
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bias_0
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Text Label 4000 3500 0 50 ~ 0
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bias_0
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Text Label 3500 4500 2 50 ~ 0
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bias_1
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Text Label 4000 3700 0 50 ~ 0
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bias_1
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$Comp
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L Device:R_Small R23
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U 1 1 5F50BF56
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P 4700 3700
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F 0 "R23" V 4804 3700 50 0000 C CNN
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F 1 "0R" V 4895 3700 50 0000 C CNN
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F 2 "Resistor_SMD:R_0603_1608Metric" H 4700 3700 50 0001 C CNN
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F 3 "~" H 4700 3700 50 0001 C CNN
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F 4 "DNP" V 4986 3700 50 0000 C CNN "DNP"
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1 4700 3700
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0 1 1 0
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$EndComp
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Text Notes 2100 5400 0 50 ~ 0
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f_c = 16 Hz for single pole RC
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$EndSCHEMATC
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