diff --git a/bmi-8ch-cache.lib b/bmi-8ch-cache.lib
index b125f9c..db4cbca 100644
--- a/bmi-8ch-cache.lib
+++ b/bmi-8ch-cache.lib
@@ -1,52 +1,56 @@
 EESchema-LIBRARY Version 2.3
 #encoding utf-8
 #
-# +5V
+# AD8227
 #
-DEF +5V #PWR 0 0 Y Y 1 F P
-F0 "#PWR" 0 -150 50 H I C CNN
-F1 "+5V" 0 140 50 H V C CNN
-F2 "" 0 0 50 H I C CNN
-F3 "" 0 0 50 H I C CNN
+DEF AD8227 U 0 10 Y Y 1 F N
+F0 "U" 150 125 50 H V L CNN
+F1 "AD8227" 150 -125 50 H V L CNN
+F2 "" 100 0 50 H I C CNN
+F3 "" 100 0 50 H I C CNN
+$FPLIST
+ DIP*W7.62mm*
+ SOIC*Pitch1.27mm*
+$ENDFPLIST
 DRAW
-P 2 0 1 0 -30 50 0 100 N
-P 2 0 1 0 0 0 0 100 N
-P 2 0 1 0 0 100 30 50 N
-X +5V 1 0 0 0 U 50 50 1 1 W N
+P 4 0 1 10 300 0 -200 250 -200 -250 300 0 f
+X - 1 -300 -200 100 R 50 50 1 1 I
+X Rg 2 -300 -100 100 R 50 50 1 1 P
+X Rg 3 -300 100 100 R 50 50 1 1 P
+X + 4 -300 200 100 R 50 50 1 1 I
+X V- 5 0 -300 150 U 50 50 1 1 W
+X Ref 6 100 -300 200 U 50 50 1 1 I
+X ~ 7 400 0 100 L 50 50 1 1 O
+X V+ 8 0 300 150 D 50 50 1 1 W
 ENDDRAW
 ENDDEF
 #
-# AD8237
+# AD8538
 #
-DEF AD8237 U 0 20 Y Y 1 F N
+DEF AD8538 U 0 20 Y Y 1 F N
 F0 "U" 200 150 50 H V L CNN
-F1 "AD8237" 200 -150 50 H V L CNN
+F1 "AD8538" 200 -150 50 H V L CNN
 F2 "" 0 0 50 H I C CNN
 F3 "" 0 0 50 H I C CNN
 $FPLIST
  MSOP-8
+ SOIC-8
 $ENDFPLIST
 DRAW
-P 2 0 1 6 0 -150 0 -100 N
-P 2 0 1 6 0 150 0 100 N
-P 3 0 1 6 50 -75 100 -125 100 -150 N
 P 4 0 1 10 200 0 -200 200 -200 -200 200 0 f
-X BW 1 0 -300 150 U 50 50 1 1 P
-X + 2 -300 100 100 R 50 50 1 1 I
-X - 3 -300 -100 100 R 50 50 1 1 I
-X V- 4 -100 -300 150 U 50 50 1 1 W
-X V+ 5 -100 300 150 D 50 50 1 1 W
-X Ref 6 0 300 150 D 50 50 1 1 I
-X FB 7 100 -300 150 U 50 50 1 1 P
-X ~ 8 300 0 100 L 50 50 1 1 O
+X V- 2 -50 -250 126 U 50 39 0 1 W
+X V+ 5 -50 250 126 D 50 39 0 1 W
+X ~ 1 300 0 100 L 50 50 1 1 O
+X + 3 -300 100 100 R 50 50 1 1 I
+X - 4 -300 -100 100 R 50 50 1 1 I
 ENDDRAW
 ENDDEF
 #
-# AD8629
+# AD8622
 #
-DEF AD8629 U 0 20 Y Y 2 F N
+DEF AD8622 U 0 20 Y Y 2 F N
 F0 "U" 200 150 50 H V L CNN
-F1 "AD8629" 200 -150 50 H V L CNN
+F1 "AD8622" 200 -150 50 H V L CNN
 F2 "" 0 0 50 H I C CNN
 F3 "" 0 0 50 H I C CNN
 $FPLIST
@@ -130,6 +134,29 @@ X P3 3 -200 -100 150 R 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
+# CP
+#
+DEF CP C 0 10 N Y 1 F N
+F0 "C" 25 100 50 H V L CNN
+F1 "CP" 25 -100 50 H V L CNN
+F2 "" 38 -150 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ CP_*
+$ENDFPLIST
+DRAW
+S -90 20 -90 40 0 1 0 N
+S -90 20 90 20 0 1 0 N
+S 90 -20 -90 -40 0 1 0 F
+S 90 40 -90 40 0 1 0 N
+S 90 40 90 20 0 1 0 N
+P 2 0 1 0 -70 90 -30 90 N
+P 2 0 1 0 -50 110 -50 70 N
+X ~ 1 0 150 110 D 50 50 1 1 P
+X ~ 2 0 -150 110 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
 # GNDA
 #
 DEF GNDA #PWR 0 0 Y Y 1 F P
@@ -143,36 +170,6 @@ X GNDA 1 0 0 0 D 50 50 1 1 W N
 ENDDRAW
 ENDDEF
 #
-# LP2985LV
-#
-DEF LP2985LV U 0 30 Y Y 1 F N
-F0 "U" 200 -450 50 H V C CNN
-F1 "LP2985LV" 0 450 50 H V C CNN
-F2 "" 0 0 50 H I C CNN
-F3 "" 0 0 50 H I C CNN
-DRAW
-S -500 -400 500 400 0 1 0 N
-X VIN 1 -800 300 300 R 50 50 1 1 W
-X GND 2 0 -700 300 U 50 50 1 1 W
-X ON/OFF 3 -800 100 300 R 50 50 1 1 I
-X BYPASS 4 -800 -200 300 R 50 50 1 1 I
-X VOUT 5 800 300 300 L 50 50 1 1 w
-ENDDRAW
-ENDDEF
-#
-# PWR_FLAG
-#
-DEF PWR_FLAG #FLG 0 0 N N 1 F P
-F0 "#FLG" 0 75 50 H I C CNN
-F1 "PWR_FLAG" 0 150 50 H V C CNN
-F2 "" 0 0 50 H I C CNN
-F3 "" 0 0 50 H I C CNN
-DRAW
-X pwr 1 0 0 0 U 50 50 0 0 w
-P 6 0 1 0 0 0 0 50 -40 75 0 100 40 75 0 50 N
-ENDDRAW
-ENDDEF
-#
 # R
 #
 DEF R R 0 0 N Y 1 F N
@@ -191,6 +188,23 @@ X ~ 2 0 -150 50 U 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
+# R_Small
+#
+DEF R_Small R 0 10 N N 1 F N
+F0 "R" 30 20 50 H V L CNN
+F1 "R_Small" 30 -40 50 H V L CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+$FPLIST
+ R_*
+$ENDFPLIST
+DRAW
+S -30 70 30 -70 0 1 8 N
+X ~ 1 0 100 30 D 50 50 1 1 P
+X ~ 2 0 -100 30 U 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
 # VBATT
 #
 DEF VBATT #PWR 0 0 Y Y 1 F P
diff --git a/bmi-8ch.sch b/bmi-8ch.sch
index 320d946..4be632c 100644
--- a/bmi-8ch.sch
+++ b/bmi-8ch.sch
@@ -55,213 +55,187 @@ F4 "GUARD0" O R 1900 2600 87
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 $Comp
-L GNDA #PWR?
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-F 0 "#PWR?" H 9450 1150 50  0001 C CNN
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-Text GLabel 9950 2100 2    87   Input ~ 0
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-F 3 "" H 8050 850 50  0000 C CNN
-	1    8050 850 
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+$EndComp
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 $Comp
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diff --git a/channel0.sch b/channel0.sch
index 12c5f3e..dd001b9 100644
--- a/channel0.sch
+++ b/channel0.sch
@@ -35,7 +35,7 @@ EELAYER END
 $Descr USLetter 11000 8500
 encoding utf-8
 Sheet 2 2
-Title "Input Channel 0/1"
+Title "Input Channel 0"
 Date "2017-03-23"
 Rev "AA"
 Comp "Monadnock Systems"
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-AR Path="/58D5695A/58D4D7FD" Ref="U202"  Part="2" 
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-F 1 "AD8629" H 3450 6850 50  0000 L CNN
-F 2 "" H 3250 7000 50  0001 C CNN
-F 3 "" H 3250 7000 50  0001 C CNN
-	2    3250 7000
-	1    0    0    -1  
-$EndComp
-$Comp
-L C C208
-U 1 1 58D4D803
-P 2550 7050
-AR Path="/58D4647E/58D4D803" Ref="C208"  Part="1" 
-AR Path="/58D5695A/58D4D803" Ref="C208"  Part="1" 
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-F 1 "910pF" H 2575 6950 50  0000 L CNN
-F 2 "" H 2588 6900 50  0001 C CNN
-F 3 "" H 2550 7050 50  0001 C CNN
-	1    2550 7050
-	1    0    0    -1  
-$EndComp
-$Comp
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-U 1 1 58D4D809
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-AR Path="/58D4647E/58D4D809" Ref="C207"  Part="1" 
-AR Path="/58D5695A/58D4D809" Ref="C207"  Part="1" 
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-F 1 "9.1nF" H 3075 6350 50  0000 L CNN
-F 2 "" H 3088 6300 50  0001 C CNN
-F 3 "" H 3050 6450 50  0001 C CNN
-	1    3050 6450
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+U 1 1 58D49A2E
+P 4550 4950
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+F 1 "1.15M" V 4550 4950 39  0000 C CNN
+F 2 "" V 4480 4950 50  0001 C CNN
+F 3 "" H 4550 4950 50  0001 C CNN
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 	0    1    1    0   
 $EndComp
 $Comp
-L R R220
-U 1 1 58D4D80F
-P 2300 6900
-AR Path="/58D4647E/58D4D80F" Ref="R220"  Part="1" 
-AR Path="/58D5695A/58D4D80F" Ref="R220"  Part="1" 
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-F 1 "1.15M" V 2300 6900 50  0000 C CNN
-F 2 "" V 2230 6900 50  0001 C CNN
-F 3 "" H 2300 6900 50  0001 C CNN
-	1    2300 6900
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+P 4150 4950
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+F 1 "86.6k" V 4150 4950 50  0000 C CNN
+F 2 "" V 4080 4950 50  0001 C CNN
+F 3 "" H 4150 4950 50  0001 C CNN
+	1    4150 4950
 	0    1    1    0   
 $EndComp
 $Comp
-L R R219
-U 1 1 58D4D815
-P 1900 6900
-AR Path="/58D4647E/58D4D815" Ref="R219"  Part="1" 
-AR Path="/58D5695A/58D4D815" Ref="R219"  Part="1" 
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-F 1 "86.6k" V 1900 6900 50  0000 C CNN
-F 2 "" V 1830 6900 50  0001 C CNN
-F 3 "" H 1900 6900 50  0001 C CNN
-	1    1900 6900
-	0    1    1    0   
-$EndComp
-$Comp
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-U 1 1 58D4D81B
-P 3200 7250
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-AR Path="/58D5695A/58D4D81B" Ref="#PWR014"  Part="1" 
-F 0 "#PWR014" H 3200 7000 50  0001 C CNN
-F 1 "GNDA" H 3200 7100 50  0000 C CNN
-F 2 "" H 3200 7250 50  0001 C CNN
-F 3 "" H 3200 7250 50  0001 C CNN
-	1    3200 7250
+L GNDA #PWR207
+U 1 1 58D49BFF
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+F 1 "GNDA" H 4800 5100 50  0000 C CNN
+F 2 "" H 4800 5250 50  0001 C CNN
+F 3 "" H 4800 5250 50  0001 C CNN
+	1    4800 5250
 	1    0    0    -1  
 $EndComp
+Text Notes 600  1800 0    87   ~ 0
+Notes:\nDesigned for 0-5V Output\nOutput can swing from AGND to VBATT (5.125-12V) in some failure modes.\nMay damage ADC if input range is <= VBATT\n\nR204: 0.1%\nR208, R209: 1%\nR202, R205, R206: Metal Foil / Thin Film (>1% if DC coupled)\nALL C: 5%, 16V
 $Comp
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-U 1 1 58D4D821
-P 3200 6750
-AR Path="/58D4647E/58D4D821" Ref="#PWR015"  Part="1" 
-AR Path="/58D5695A/58D4D821" Ref="#PWR015"  Part="1" 
-F 0 "#PWR015" H 3200 6600 50  0001 C CNN
-F 1 "+5V" H 3200 6890 50  0000 C CNN
-F 2 "" H 3200 6750 50  0001 C CNN
-F 3 "" H 3200 6750 50  0001 C CNN
-	1    3200 6750
-	1    0    0    -1  
-$EndComp
-$Comp
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-U 1 1 58D4D827
-P 2550 7200
-AR Path="/58D4647E/58D4D827" Ref="#PWR016"  Part="1" 
-AR Path="/58D5695A/58D4D827" Ref="#PWR016"  Part="1" 
-F 0 "#PWR016" H 2550 6950 50  0001 C CNN
-F 1 "GNDA" H 2550 7050 50  0000 C CNN
-F 2 "" H 2550 7200 50  0001 C CNN
-F 3 "" H 2550 7200 50  0001 C CNN
-	1    2550 7200
-	1    0    0    -1  
-$EndComp
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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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-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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-Wire Wire Line
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-Wire Wire Line
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-Wire Notes Line
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-Wire Notes Line
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-Wire Notes Line
-	1550 7750 1550 6300
-Text Notes 1550 7750 0    60   ~ 0
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-Wire Notes Line
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-Wire Notes Line
-	5250 4100 5250 8000
-Wire Wire Line
-	8700 3750 7600 3750
-Text Notes 8250 2200 0    60   ~ 0
-G=50
-Text Notes 3450 5950 0    60   ~ 0
-G=50
-Text Notes 9600 800  0    87   ~ 0
-Channel 0
-Text Notes 4450 4300 0    87   ~ 0
-Channel 1
-Text Notes 650  1200 0    87   ~ 0
-Notes:\nR207, R208, R209, R210, R217, R218, R219, R220: 1%\nR202, R204, R205, R212, R214, R215: Metal Foil / Thin Film\nALL C: 5%
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-L R R206
+L R R207
 U 1 1 58D47410
-P 7300 1700
-AR Path="/58D4647E/58D47410" Ref="R206"  Part="1" 
-AR Path="/58D5695A/58D47410" Ref="R206"  Part="1" 
-F 0 "R206" V 7380 1700 50  0000 C CNN
-F 1 "1M" V 7300 1700 50  0000 C CNN
-F 2 "" V 7230 1700 50  0001 C CNN
-F 3 "" H 7300 1700 50  0001 C CNN
-	1    7300 1700
+P 4750 3500
+F 0 "R207" V 4830 3500 50  0000 C CNN
+F 1 "390k" V 4750 3500 50  0000 C CNN
+F 2 "" V 4680 3500 50  0001 C CNN
+F 3 "" H 4750 3500 50  0001 C CNN
+	1    4750 3500
 	1    0    0    -1  
 $EndComp
 $Comp
 L R R203
 U 1 1 58D47392
-P 7300 1300
-AR Path="/58D4647E/58D47392" Ref="R203"  Part="1" 
-AR Path="/58D5695A/58D47392" Ref="R203"  Part="1" 
-F 0 "R203" V 7380 1300 50  0000 C CNN
-F 1 "1M" V 7300 1300 50  0000 C CNN
-F 2 "" V 7230 1300 50  0001 C CNN
-F 3 "" H 7300 1300 50  0001 C CNN
-	1    7300 1300
+P 4750 3100
+F 0 "R203" V 4830 3100 50  0000 C CNN
+F 1 "390k" V 4750 3100 50  0000 C CNN
+F 2 "" V 4680 3100 50  0001 C CNN
+F 3 "" H 4750 3100 50  0001 C CNN
+	1    4750 3100
 	1    0    0    -1  
 $EndComp
-Wire Wire Line
-	7450 1150 7450 1400
-Wire Wire Line
-	7150 1150 7450 1150
-Wire Wire Line
-	7150 1150 7150 1300
-Connection ~ 7300 1150
-Wire Wire Line
-	7150 1700 7150 1850
-Wire Wire Line
-	7450 1850 7450 1600
-Wire Wire Line
-	7300 1450 7300 1550
-Text GLabel 7200 1500 0    60   Input ~ 0
+Text GLabel 4650 3300 0    60   Input ~ 0
 Vref/2
-Wire Wire Line
-	7200 1500 7300 1500
-Connection ~ 7300 1500
-Wire Wire Line
-	6700 1700 6850 1700
-Wire Wire Line
-	7150 1850 7450 1850
-Connection ~ 7300 1850
-Wire Notes Line
-	6850 2000 7500 2000
-Wire Notes Line
-	7500 2000 7500 1000
-Wire Notes Line
-	6850 1000 6850 2000
-Wire Wire Line
-	2450 5200 2450 5300
-Wire Wire Line
-	2350 5600 2650 5600
-Wire Wire Line
-	2650 5600 2650 5350
-Wire Wire Line
-	2350 4900 2650 4900
-Wire Wire Line
-	2650 4900 2650 5150
-Wire Wire Line
-	2350 5050 2350 4900
-Connection ~ 2450 4900
-Wire Wire Line
-	2350 5400 2350 5600
-Connection ~ 2450 5600
-Wire Wire Line
-	1900 5400 2050 5400
-Text GLabel 2400 5250 0    60   Input ~ 0
-Vref/2
-Wire Wire Line
-	2400 5250 2450 5250
-Connection ~ 2450 5250
-Wire Notes Line
-	2000 4800 2000 5750
-Wire Notes Line
-	2700 5750 2700 4800
 $Comp
-L +5V #PWR?
-U 1 1 58D5ECAF
-P 7450 5100
-F 0 "#PWR?" H 7450 4950 50  0001 C CNN
-F 1 "+5V" H 7450 5240 50  0000 C CNN
-F 2 "" H 7450 5100 50  0001 C CNN
-F 3 "" H 7450 5100 50  0001 C CNN
-	1    7450 5100
-	1    0    0    -1  
-$EndComp
-$Comp
-L GNDA #PWR?
+L GNDA #PWR202
 U 1 1 58D5ED2F
-P 7450 5400
-F 0 "#PWR?" H 7450 5150 50  0001 C CNN
-F 1 "GNDA" H 7450 5250 50  0000 C CNN
-F 2 "" H 7450 5400 50  0001 C CNN
-F 3 "" H 7450 5400 50  0001 C CNN
-	1    7450 5400
+P 2000 4150
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+F 1 "GNDA" H 2000 4000 50  0000 C CNN
+F 2 "" H 2000 4150 50  0001 C CNN
+F 3 "" H 2000 4150 50  0001 C CNN
+	1    2000 4150
 	1    0    0    -1  
 $EndComp
 $Comp
-L C C?
+L C C201
 U 1 1 58D5F9F5
-P 7450 5250
-F 0 "C?" H 7475 5350 50  0000 L CNN
-F 1 "C" H 7475 5150 50  0000 L CNN
-F 2 "" H 7488 5100 50  0001 C CNN
-F 3 "" H 7450 5250 50  0001 C CNN
-	1    7450 5250
+P 2000 4000
+F 0 "C201" H 2025 4100 50  0000 L CNN
+F 1 "0.1μF" H 2025 3900 50  0000 L CNN
+F 2 "" H 2038 3850 50  0001 C CNN
+F 3 "" H 2000 4000 50  0001 C CNN
+	1    2000 4000
 	1    0    0    -1  
 $EndComp
-$Comp
-L C C?
-U 1 1 58D5FAD9
-P 7700 5250
-F 0 "C?" H 7725 5350 50  0000 L CNN
-F 1 "C" H 7725 5150 50  0000 L CNN
-F 2 "" H 7738 5100 50  0001 C CNN
-F 3 "" H 7700 5250 50  0001 C CNN
-	1    7700 5250
-	1    0    0    -1  
-$EndComp
-$Comp
-L C C?
-U 1 1 58D5FB61
-P 7950 5250
-F 0 "C?" H 7975 5350 50  0000 L CNN
-F 1 "C" H 7975 5150 50  0000 L CNN
-F 2 "" H 7988 5100 50  0001 C CNN
-F 3 "" H 7950 5250 50  0001 C CNN
-	1    7950 5250
-	1    0    0    -1  
-$EndComp
-Wire Wire Line
-	7450 5100 7950 5100
-Connection ~ 7700 5100
-Wire Wire Line
-	7450 5400 7950 5400
-Connection ~ 7700 5400
-Connection ~ 7450 5400
-Connection ~ 7450 5100
-Text Notes 6400 4000 0    60   ~ 0
+Text Notes 3850 5800 0    60   ~ 0
 Chebyshev (0.23dB)\n-3dB @ 195Hz\n-50dB @ 3.1kHz
+$Comp
+L VBATT #PWR206
+U 1 1 58D55284
+P 5450 4800
+F 0 "#PWR206" H 5450 4650 50  0001 C CNN
+F 1 "VBATT" H 5450 4950 50  0000 C CNN
+F 2 "" H 5450 4800 50  0000 C CNN
+F 3 "" H 5450 4800 50  0000 C CNN
+	1    5450 4800
+	1    0    0    -1  
+$EndComp
+$Comp
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+F 0 "#PWR208" H 5450 5050 50  0001 C CNN
+F 1 "GNDA" H 5450 5150 50  0000 C CNN
+F 2 "" H 5450 5300 50  0001 C CNN
+F 3 "" H 5450 5300 50  0001 C CNN
+	1    5450 5300
+	1    0    0    -1  
+$EndComp
+$Comp
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+F 0 "U201" H 5650 3425 50  0000 L CNN
+F 1 "AD8227" H 5650 3175 50  0000 L CNN
+F 2 "" H 5600 3300 50  0001 C CNN
+F 3 "" H 5600 3300 50  0001 C CNN
+	1    5500 3300
+	1    0    0    -1  
+$EndComp
+$Comp
+L R_Small R204
+U 1 1 58D5622C
+P 5100 3300
+F 0 "R204" V 5150 3200 50  0000 L CNN
+F 1 "1.78k" V 5095 3235 31  0000 L CNN
+F 2 "" H 5100 3300 50  0001 C CNN
+F 3 "" H 5100 3300 50  0001 C CNN
+	1    5100 3300
+	1    0    0    -1  
+$EndComp
+Text Notes 5000 3150 0    39   ~ 0
+G=50
+$Comp
+L VBATT #PWR203
+U 1 1 58D567E9
+P 5500 3000
+F 0 "#PWR203" H 5500 2850 50  0001 C CNN
+F 1 "VBATT" H 5500 3150 50  0000 C CNN
+F 2 "" H 5500 3000 50  0000 C CNN
+F 3 "" H 5500 3000 50  0000 C CNN
+	1    5500 3000
+	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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+Wire Wire Line
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+Connection ~ 3650 2750
+Wire Wire Line
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+Connection ~ 3850 2750
+Wire Wire Line
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+Wire Wire Line
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 Wire Notes 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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+Connection ~ 4350 4950
+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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 Wire Notes Line
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 Wire Notes 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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+Wire Wire Line
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+Connection ~ 4750 3300
+Wire Wire Line
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+Wire Wire Line
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+Connection ~ 4750 3650
+Wire Notes Line
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+Wire Notes Line
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+Wire Notes Line
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+Connection ~ 2000 4150
+Connection ~ 2000 3850
+Wire Notes 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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+Wire Wire Line
+	5200 3400 5100 3400
+Connection ~ 4000 3200
+Wire Wire Line
+	4000 3200 4150 3200
+Text Notes 4200 2750 0    39   ~ 0
+When DC coupled, sensor failure grounds output.
+Text Notes 5000 4050 0    39   ~ 0
+CMRR: >95dB\nInput Voltage Noise Density: <28nV/√Hz\nOutput Voltage Noise Density: <330nV/√Hz\nVoltage Noise (0.1-10Hz): < 0.8μV p-p\n
+Text Notes 5700 5750 0    39   ~ 0
+Offset: <125uV\nOffset Drift: <1.3uv/°C\nVoltage Noise Density: 12nV/√Hz\nVoltage Noise (0.1-10Hz): 0.2μV p-p
+Text Notes 6200 4450 0    60   ~ 0
+Antialias Filter
+$Comp
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+U 1 1 58D586D6
+P 2250 4000
+F 0 "C202" H 2275 4100 50  0000 L CNN
+F 1 "10μF" H 2275 3900 50  0000 L CNN
+F 2 "" H 2288 3850 50  0001 C CNN
+F 3 "" H 2250 4000 50  0001 C CNN
+	1    2250 4000
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
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+Wire Wire Line
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+$Comp
+L VBATT #PWR201
+U 1 1 58D58832
+P 2000 3850
+F 0 "#PWR201" H 2000 3700 50  0001 C CNN
+F 1 "VBATT" H 2000 4000 50  0000 C CNN
+F 2 "" H 2000 3850 50  0000 C CNN
+F 3 "" H 2000 3850 50  0000 C CNN
+	1    2000 3850
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	7200 3400 7900 3400
+Text Notes 7200 5700 0    60   ~ 0
+Assumptions:\n - (Initial) DAQ is MCC USB-1208FS (available at BMI)\n - 11-bit, max 6250 S/sec for each channel; sequential\n - Target Bandwidth: 195Hz\n - Sampling Rate 6240 S/s\n - Sensor resistance ~2MΩ\n - Respiration motion changes sensor resistance by <=10%
+Text Notes 7200 6700 0    60   ~ 0
+Analysis Notes:\n\n  1. Steep digital filter 0.4-175Hz\n    - Respiration typically 0.25-0.33Hz\n    - Narrower useful bandwidth likely, modeling needed.\n\n  2. Correct for temporal offset of sample due to sequential sampling.\n\n  3. 2x decimation for 13-bit (ENOB) and noise reduction
+Text Notes 800  7700 0    60   ~ 0
+Open Questions:\n\n1. Trimming the bridge.\n  - Only makes sense w/ DC coupling\n  - Bad tempco\n  - Bad UX\n  - Needed for significant gain\n\n2. AC vs DC Coupling; both have advantages: AC is easier\n\n3. Reducing R202,R203,R206,R207 to decrease Johnson noise: Probably useless.\n  - Changing R202,R206 may break INAMP CMRR\n\n4. Use chopper amps: Probably useless\n  - Lower total noise for *extremely* small bandwidths (<5Hz?)\n  - Lower offset (if DC coupled)\n\n5. Driven shields for output: Probably useless\n  - Reduce error due to leakage current\n  - No analysis done to determine if this is significant\n  - Current DAQ isn't likely to benefit
 $EndSCHEMATC
diff --git a/docs/AD8622_8624.pdf b/docs/AD8622_8624.pdf
new file mode 100644
index 0000000..b731c34
Binary files /dev/null and b/docs/AD8622_8624.pdf differ
diff --git a/docs/USB-1208FS.pdf b/docs/USB-1208FS.pdf
new file mode 100644
index 0000000..48289e0
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