DAC0800LJ National Semiconductor, DAC0800LJ Datasheet - Page 6

• Manufacturer Part Number: DAC0800LJ
• Description: 8-Bit Digital-to-Analog Converters
• Manufacturer: National Semiconductor

www.national.com
Typical Applications
I
For fixed reference, TTL operation, typical values are:
V
R
R15
C
V
O
REF
LC
REF
C
+ I
= 0.01 µF
= 0V (Ground)
FIGURE 4. Recommended Full Scale Adjustment
O
= 10.000V
= 5.000k
R
= I
REF
FS
for all logic states
Full Scale
Full Scale−LSB
Half Scale+LSB
Half Scale
Half Scale−LSB
Zero Scale+LSB
Zero Scale
Circuit (Note 5)
FIGURE 3. Basic Positive Reference Operation (Note 5)
B1 B2 B3 B4 B5 B6 B7 B8
FIGURE 6. Basic Unipolar Negative Operation (Note 5)
1
1
1
1
0
0
0
1
1
0
0
1
0
0
DS005686-21
1
1
0
0
1
0
0
1
1
0
0
1
0
0
1
1
0
0
1
0
0
1
1
0
0
1
0
0
6
1
1
0
0
1
0
0
Note. R
1
0
1
0
1
1
0
FIGURE 5. Basic Negative Reference Operation
REF
I
1.992
1.984
1.008
1.000
0.992
0.008
0.000
O
sets I
mA
DS005686-17
DS005686-5
FS
; R15 is for bias current cancellation
I
0.000
0.008
0.984
0.992
1.000
1.984
1.992
O
mA
(Note 5)
−9.960
−9.920
−5.040
−5.000
−4.960
−0.040
0.000
E
O
−0.040
−4.920
−4.960
−5.000
−9.920
−9.960
0.000
E
O
DS005686-16