NE5018 Multiplying DAC: Pinout: 1 Digital GND Analog GND 22 2 DB0 Amp Compensation 21 3 DB1 Summing Node 20 4 DB2 Vcc+ 19 5 DB3 DAC Output 18 6 DB4 Vee- 17 7 DB5 DAC Compensation 16 8 DB6 Bipolar Offset 15 9 DB7 Vref In 14 10 /LE Vref out 13 11 No Conn Vref adj 12 The part is probably obsolete. It was made by National Semiconductors and Signetics (now Philips). Added by Jim Steichen