matched n-channel mosfets to keep impedance the same between differential paths
This commit is contained in:
Michael Ossmann
@ -1,4 +1,4 @@
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EESchema-LIBRARY Version 2.3 Date: Wed Jun 27 21:51:49 2012
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EESchema-LIBRARY Version 2.3 Date: Wed Jun 27 21:56:30 2012
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#encoding utf-8
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#
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# BALUN
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@ -1,4 +1,4 @@
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EESchema Schematic File Version 2 date Wed Jun 27 21:51:49 2012
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EESchema Schematic File Version 2 date Wed Jun 27 21:56:30 2012
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LIBS:power
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LIBS:device
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LIBS:transistors
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@ -45,39 +45,27 @@ Comment2 ""
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Comment3 ""
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Comment4 ""
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$EndDescr
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Wire Wire Line
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10900 2550 11000 2550
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Wire Wire Line
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11000 2550 11000 2450
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Wire Wire Line
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10500 2250 10600 2250
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Wire Wire Line
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10600 2250 10600 2350
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Wire Wire Line
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10050 7250 10050 7350
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Wire Wire Line
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10050 7350 9950 7350
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Wire Wire Line
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9650 7050 9650 7150
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Text Notes 7400 7750 0 40 ~ 0
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DC connection to GND required on IF1, IF2?
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Text Notes 7700 3450 0 40 ~ 0
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DC connection to GND required on RF1, RF2?
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NoConn ~ 8100 7000
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$Comp
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L BALUN T2
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U 1 1 4FE35EF4
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P 7800 3050
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F 0 "T2" H 7800 3300 70 0000 C CNN
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F 1 "RX_BALUN" H 7800 2750 70 0000 C CNN
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F 4 "Anaren" H 7800 3050 60 0001 C CNN "Manufacturer"
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F 5 "B0310J50100AHF" H 7800 3050 60 0001 C CNN "Part Number"
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F 6 "Ultra Low Profile 0805 Balun 50 to 100 Balanced" H 7800 3050 60 0001 C CNN "Description"
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1 7800 3050
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-1 0 0 1
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$EndComp
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NoConn ~ 8200 3050
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Text Notes 11850 1150 0 40 ~ 0
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balun here may not not be needed if\ndirect connection to MAX2837 is made
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Text Notes 3450 4550 0 40 ~ 0
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amplifier will likely\nend up here
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Text Notes 2450 6900 0 40 ~ 0
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amplifier will likely\nend up here
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Wire Wire Line
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6900 1950 6900 2050
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Connection ~ 6300 8050
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Wire Wire Line
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6300 8050 6550 8050
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Wire Wire Line
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6300 7650 6300 8150
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6300 8150 6300 7650
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Wire Wire Line
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6400 5900 6400 6000
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Connection ~ 6600 3550
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@ -178,10 +166,10 @@ Wire Wire Line
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1250 9400 1500 9400
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Connection ~ 7100 5350
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Wire Wire Line
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7000 5350 7550 5350
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7550 5350 7000 5350
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Connection ~ 7700 4150
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Wire Wire Line
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7600 4150 8150 4150
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8150 4150 7600 4150
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Connection ~ 1950 6250
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Wire Wire Line
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1750 6250 2250 6250
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@ -201,11 +189,11 @@ Wire Wire Line
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2550 4750 2550 4550
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Connection ~ 2650 3550
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Wire Wire Line
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2650 3650 2650 3450
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2650 3450 2650 3650
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Wire Wire Line
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2850 3550 2650 3550
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Wire Wire Line
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4150 2250 4150 1950
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4150 1950 4150 2250
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Connection ~ 4050 3500
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Wire Wire Line
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3800 3500 4050 3500
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@ -269,13 +257,13 @@ Wire Wire Line
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Wire Wire Line
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14100 5750 14100 6050
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Wire Wire Line
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12750 5250 13500 5250
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13500 5250 12750 5250
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Connection ~ 14100 5250
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Wire Wire Line
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14100 5350 14100 5250
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Connection ~ 13400 5250
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Wire Wire Line
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13100 5350 13100 5250
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13100 5250 13100 5350
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Wire Wire Line
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11450 3950 11450 4050
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Wire Wire Line
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@ -375,8 +363,6 @@ Wire Wire Line
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13550 8900 13550 9300
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Wire Wire Line
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7850 5050 7850 5150
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Wire Wire Line
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9800 2050 9800 2150
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Wire Wire Line
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9800 4650 9800 4850
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Wire Wire Line
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@ -403,7 +389,7 @@ Wire Wire Line
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Wire Wire Line
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8150 4750 7700 4750
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Wire Wire Line
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8450 4350 8450 4550
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8450 4550 8450 4350
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Connection ~ 9500 4150
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Wire Wire Line
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9350 4150 9500 4150
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@ -473,7 +459,7 @@ Wire Wire Line
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Wire Wire Line
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4250 3250 4250 3150
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Wire Wire Line
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1550 5150 1750 5150
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1750 5150 1550 5150
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Wire Wire Line
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1650 5850 1650 5750
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Wire Wire Line
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@ -483,7 +469,7 @@ Wire Wire Line
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950 5450 850 5450
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Connection ~ 850 5450
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Wire Wire Line
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1550 3450 1750 3450
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1750 3450 1550 3450
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Wire Wire Line
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850 4050 850 3650
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Wire Wire Line
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@ -564,7 +550,7 @@ Wire Wire Line
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Wire Wire Line
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7850 6250 7850 6150
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Wire Wire Line
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7850 5750 7850 5550
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7850 5550 7850 5750
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Wire Wire Line
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7100 5950 7550 5950
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Wire Wire Line
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@ -584,10 +570,10 @@ Wire Wire Line
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Wire Wire Line
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9500 4950 10850 4950
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Wire Wire Line
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9650 6450 9650 5850
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9650 5850 9650 6450
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Connection ~ 9650 6350
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Wire Wire Line
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9800 2750 9800 4250
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9800 4250 9800 2250
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Connection ~ 9800 2850
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Wire Wire Line
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12750 8700 12850 8700
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@ -624,7 +610,7 @@ Wire Wire Line
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10600 6150 10600 6050
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Connection ~ 10600 6050
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Wire Wire Line
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10300 6750 10300 6550
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10300 6550 10300 6750
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Wire Wire Line
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10600 6550 10600 6650
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Connection ~ 10600 6650
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@ -663,12 +649,12 @@ Wire Wire Line
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Wire Wire Line
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12150 3950 12150 4050
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Wire Wire Line
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12750 4850 15400 4850
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15400 4850 12750 4850
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Wire Wire Line
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13400 5250 13400 5350
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13400 5350 13400 5250
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Connection ~ 13100 5250
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Wire Wire Line
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14000 5250 14200 5250
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14200 5250 14000 5250
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Wire Wire Line
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14800 5350 14800 5250
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Wire Wire Line
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@ -731,17 +717,17 @@ Wire Wire Line
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Wire Wire Line
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16100 4850 16100 4750
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Wire Wire Line
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3250 8150 3250 7800
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3250 7800 3250 8150
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Wire Wire Line
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3150 6700 3350 6700
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Wire Wire Line
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3350 6900 3350 6600
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3350 6600 3350 6900
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Connection ~ 3350 6700
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Wire Wire Line
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7150 2050 6700 2050
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Connection ~ 6900 2050
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Wire Wire Line
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4050 3600 4050 3150
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4050 3150 4050 3600
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Wire Wire Line
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4150 1450 4150 1550
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Wire Wire Line
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@ -854,9 +840,9 @@ Wire Wire Line
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Wire Wire Line
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8200 7600 8750 7600
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Wire Wire Line
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6600 3650 6600 3150
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6600 3150 6600 3650
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Wire Wire Line
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6400 6400 6400 6750
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6400 6750 6400 6400
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Wire Wire Line
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6650 6500 6400 6500
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Connection ~ 6400 6500
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@ -866,6 +852,74 @@ Wire Wire Line
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2650 4650 3400 4650
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Wire Wire Line
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3400 4650 3400 3150
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Wire Wire Line
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9650 7550 9650 7650
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Wire Wire Line
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10600 2850 10600 2750
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Wire Wire Line
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9800 2250 9900 2250
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$Comp
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L VCC #PWR?
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U 1 1 4FEBD54F
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P 11000 2450
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F 0 "#PWR?" H 11000 2550 30 0001 C CNN
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F 1 "VCC" H 11000 2550 30 0000 C CNN
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1 11000 2450
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1 0 0 -1
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$EndComp
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$Comp
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L MOSFET_N Q?
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U 1 1 4FEBD52A
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P 10700 2550
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F 0 "Q?" H 10710 2720 60 0000 R CNN
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F 1 "MOSFET_N" H 10710 2400 60 0000 R CNN
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F 4 "DMN2300UFB4" H 10700 2550 60 0001 C CNN "Part Number"
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1 10700 2550
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-1 0 0 -1
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$EndComp
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$Comp
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L VCC #PWR?
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U 1 1 4FEBD516
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P 10050 7250
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F 0 "#PWR?" H 10050 7350 30 0001 C CNN
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F 1 "VCC" H 10050 7350 30 0000 C CNN
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1 10050 7250
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1 0 0 -1
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$EndComp
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$Comp
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L MOSFET_N Q?
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U 1 1 4FEBD4FB
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P 9750 7350
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F 0 "Q?" H 9760 7520 60 0000 R CNN
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F 1 "MOSFET_N" H 9760 7200 60 0000 R CNN
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F 4 "DMN2300UFB4" H 9750 7350 60 0001 C CNN "Part Number"
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1 9750 7350
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-1 0 0 -1
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$EndComp
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Text Notes 7400 7750 0 40 ~ 0
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DC connection to GND required on IF1, IF2?
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Text Notes 7700 3450 0 40 ~ 0
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DC connection to GND required on RF1, RF2?
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NoConn ~ 8100 7000
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$Comp
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L BALUN T2
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U 1 1 4FE35EF4
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P 7800 3050
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F 0 "T2" H 7800 3300 70 0000 C CNN
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F 1 "RX_BALUN" H 7800 2750 70 0000 C CNN
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F 4 "Anaren" H 7800 3050 60 0001 C CNN "Manufacturer"
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F 5 "B0310J50100AHF" H 7800 3050 60 0001 C CNN "Part Number"
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F 6 "Ultra Low Profile 0805 Balun 50 to 100 Balanced" H 7800 3050 60 0001 C CNN "Description"
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1 7800 3050
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-1 0 0 1
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$EndComp
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NoConn ~ 8200 3050
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Text Notes 11850 1150 0 40 ~ 0
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balun here may not not be needed if\ndirect connection to MAX2837 is made
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Text Notes 3450 4550 0 40 ~ 0
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amplifier will likely\nend up here
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Text Notes 2450 6900 0 40 ~ 0
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amplifier will likely\nend up here
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Text Notes 4750 2750 0 60 ~ 0
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switchable image reject filters
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Text Notes 4100 7350 0 60 ~ 0
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@ -1973,10 +2027,10 @@ $EndComp
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$Comp
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L GND #PWR66
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U 1 1 4FE0EFAF
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P 9650 7150
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F 0 "#PWR66" H 9650 7150 30 0001 C CNN
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F 1 "GND" H 9650 7080 30 0001 C CNN
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1 9650 7150
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P 9650 7650
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F 0 "#PWR66" H 9650 7650 30 0001 C CNN
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F 1 "GND" H 9650 7580 30 0001 C CNN
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1 9650 7650
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1 0 0 -1
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$EndComp
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$Comp
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@ -2030,6 +2084,7 @@ U 1 1 4FE0EEDB
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P 7750 5950
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F 0 "Q4" H 7760 6120 60 0000 R CNN
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F 1 "MOSFET_N" H 7760 5800 60 0000 R CNN
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F 4 "DMN2300UFB4" H 7750 5950 60 0001 C CNN "Part Number"
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1 7750 5950
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1 0 0 -1
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$EndComp
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@ -2070,6 +2125,7 @@ U 1 1 4FE0EE1A
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P 8350 4750
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F 0 "Q2" H 8360 4920 60 0000 R CNN
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F 1 "MOSFET_N" H 8360 4600 60 0000 R CNN
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F 4 "DMN2300UFB4" H 8350 4750 60 0001 C CNN "Part Number"
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1 8350 4750
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1 0 0 -1
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$EndComp
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@ -2085,20 +2141,20 @@ $EndComp
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$Comp
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L GND #PWR16
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U 1 1 4FE0EDCF
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P 9800 2050
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F 0 "#PWR16" H 9800 2050 30 0001 C CNN
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F 1 "GND" H 9800 1980 30 0001 C CNN
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1 9800 2050
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-1 0 0 1
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P 10600 2850
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F 0 "#PWR16" H 10600 2850 30 0001 C CNN
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F 1 "GND" H 10600 2780 30 0001 C CNN
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1 10600 2850
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1 0 0 -1
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$EndComp
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$Comp
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L INDUCTOR L3
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U 1 1 4FE0EDC7
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P 9800 2450
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F 0 "L3" V 9750 2450 40 0000 C CNN
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F 1 "INDUCTOR" V 9900 2450 40 0000 C CNN
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1 9800 2450
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1 0 0 -1
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P 10200 2250
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F 0 "L3" V 10150 2250 40 0000 C CNN
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F 1 "INDUCTOR" V 10300 2250 40 0000 C CNN
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1 10200 2250
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0 1 1 0
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$EndComp
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$Comp
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L INDUCTOR L4
|
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Reference in New Issue
Block a user