AD7524
ANALO G CIRCUIT CO NNECTIO NS
AD7524
AD7524
Figure 5. Bipolar (4-Quadrant) Operation
Figure 4. Unipolar Binary Operation
(2-Quadrant Multiplication)
Table II. Bipolar (O ffset Binary) Code Table
Table I. Unipolar Binary Code Table
D igital Input
D igital Input
MSB LSB
Analog O utput
MSB
LSB
Analog O utput
1111 1111
1000 0001
1000 0000
0111 1111
0000 0001
0000 0000
+VREF (127/128)
+VREF (1/128 )
0
–VREF (1/128)
–VREF (127/128)
–VREF (128/128)
1111 1111
1000 0001
1000 0000
0111 1111
0000 0001
0000 0000
–VREF (255/256)
–VREF (129/256)
–VREF (128/256) = –VREF/2
–VREF (127/256)
–VREF (1/256)
–VREF (0/256) = 0
Note: 1 LSB = (2–7)(VREF) = 1/128 (VREF
)
Note: 1 LSB = (2–8)(VREF) = 1/256 (VREF
)
MICRO P RO CESSO R INTERFACE
Figure 6. AD7524/8085A Interface
Figure 7. AD7524/MC6800 Interface
REV. B
–5–
ADI [ ADI ]
