Interface circuit between DAC1210 and PC

DAC 1210 has a similar structure to DAC0832, and its D/A conversion control method is also similar, and can be directly used with. Bus connection for 8-bit or 16-bit microcomputer
. Its main performance indicators are as follows: 12
-bit binary numbers are input in two times; current
establishment time I, Ls; power supply +5~
+15V (single power supply); reference voltage
VREF range -10-+10V.
    The connection between DAC1210 and PC bus
is shown in Figure 27-15. Since there are two
levels of buffer latches on the chip, it can be directly connected to the PC bus . The high 8-bit data input lines D14~DIll of DAC 1210 are connected to DO-D7 of the data bus, and the low 4-bit DIO~DB are connected to D1~D7 of the data bus. The current-type output operational amplifier Al outputs the negative polarity voltage, and then is calculated. Amplifier A2 performs polarity conversion and becomes a positive polarity voltage output.