diff --git a/library/adc-dac.dcm b/library/adc-dac.dcm
index 0a408ce2..9e47eb54 100644
--- a/library/adc-dac.dcm
+++ b/library/adc-dac.dcm
@@ -563,18 +563,36 @@ K 12-Bit DAC SPI Reference
 F http://ww1.microchip.com/downloads/en/DeviceDoc/21295C.pdf
 $ENDCMP
 #
+$CMP MCP4901
+D 8-Bit D/A Converters with SPI Interface
+K 8-Bit DAC SPI 
+F http://ww1.microchip.com/downloads/en/DeviceDoc/22250A.pdf
+$ENDCMP
+#
 $CMP MCP4902
 D 2-Channel 8-Bit D/A Converters with SPI Interface
 K 8-Bit DAC SPI 
 F http://ww1.microchip.com/downloads/en/DeviceDoc/22250A.pdf
 $ENDCMP
 #
+$CMP MCP4911
+D 10-Bit D/A Converters with SPI Interface
+K 10-Bit DAC SPI
+F http://ww1.microchip.com/downloads/en/DeviceDoc/22250A.pdf
+$ENDCMP
+#
 $CMP MCP4912
 D 2-Channel 10-Bit D/A Converters with SPI Interface
 K 10-Bit DAC SPI 
 F http://ww1.microchip.com/downloads/en/DeviceDoc/22250A.pdf
 $ENDCMP
 #
+$CMP MCP4921
+D 12-Bit D/A Converters with SPI Interface
+K 12-Bit DAC SPI 
+F http://www.ee.ic.ac.uk/pcheung/teaching/ee2_digital/MCP49x1.pdf
+$ENDCMP
+#
 $CMP MCP4921-E/MS
 D MCP4921, Single 12-bit Digital to Analog Converter, SPI Interface, MSOP-8
 K Single DAC 1ch 12bit SPI
diff --git a/library/adc-dac.lib b/library/adc-dac.lib
index f6e94922..52177d14 100644
--- a/library/adc-dac.lib
+++ b/library/adc-dac.lib
@@ -1932,6 +1932,34 @@ X VA 8 -500 100 100 R 50 50 1 1 O
 ENDDRAW
 ENDDEF
 #
+# MCP4901
+#
+DEF MCP4901 U 0 40 Y Y 1 F N
+F0 "U" 175 425 50 H V L CNN
+F1 "MCP4901" 175 350 50 H V L CNN
+F2 "" 800 -100 50 H I C CNN
+F3 "" 800 -100 50 H I C CNN
+ALIAS MCP4911 MCP4921
+$FPLIST
+ DIP-8
+ DIL-8
+ MSOP-8
+ SO-8
+ DFN-8
+$ENDFPLIST
+DRAW
+P 6 0 0 0 -500 0 -200 300 400 300 400 -300 -200 -300 -500 0 f
+X Vdd 1 100 400 100 D 50 50 1 1 W
+X ~CS 2 500 0 100 L 50 50 1 1 I
+X SCK 3 500 -100 100 L 50 50 1 1 I C
+X SDI 4 500 -200 100 L 50 50 1 1 I
+X ~LDAC 5 500 100 100 L 50 50 1 1 O
+X Vref 6 -100 400 100 D 50 50 1 1 W
+X GND 7 100 -400 100 U 50 50 1 1 W
+X Vout 8 -600 0 100 R 50 50 1 1 w
+ENDDRAW
+ENDDEF
+#
 # MCP4902
 #
 DEF MCP4902 U 0 40 Y Y 1 F N