Datasheet


  
SLAS063B − APRIL 1989 − REVISED MARCH 2007
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
Table 1. Mode Selection Table
DACA/DACB CS WR DACA DACB
L
H
X
X
L
L
H
X
L
L
X
H
Write
Hold
Hold
Hold
Hold
Write
Hold
Hold
L = low level, H = high level, X = don’t care
Table 2. Unipolar Binary Code Table 3. Bipolar (Offset Binary) Code
DAC LATCH CONTENTS
(see Note 7)
ANALOG OUTPUT
DAC LATCH CONTENTS
(see Note 8)
ANALOG OUTPUT
MSB LSB
ANALOG OUTPUT
MSB LSB
ANALOG OUTPUT
1 1 1 1 1 1 1 1
1 0 0 0 0 0 0 1
1 0 0 0 0 0 0 0
0 1 1 1 1 1 1 1
0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0
−V
I
(255/256)
−V
I
(129/256)
−V
I
(128/256) = −V
i
/2
−V
I
(127/256)
−V
I
(1/256)
−V
I
(0/256) = 0
1 1 1 1 1 1 1 1
1 0 0 0 0 0 0 1
1 0 0 0 0 0 0 0
0 1 1 1 1 1 1 1
0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0
V
I
(127/128)
V
I
(1/128)
0 V
−V
I
(1/128)
−V
I
(127/128)
−V
I
(128/128)
NOTES: 7. 1 LSB = (2
− 8
)V
I
8. 1 LSB = (2
− 7
)V
I