DAC08GBC View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
DAC08GBC
Analog Devices
DAC08GBC Datasheet PDF : 12 Pages
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DAC08
10
ALL BITS “HIGH” OR “LOW”
9
8
7
I–
6
5
4
3
I+
2
1
0
0 2 4 6 8 10 12 14 16 18 20
V+, POSITIVE POWER SUPPLY – V dc
TPC 10. Power Supply Current vs. V+
10
BITS MAY BE “HIGH” OR “LOW”
9
8
7
I– WITH IREF = 2mA
6
5
I– WITH IREF = 1mA
4
3
I– WITH IREF = 0.2mA
2
I+
1
0
–0 –2 –4 –6 –8 –10 –12 –14 –16 –18 –20
V–, NEGATIVE POWER SUPPLY – V dc
TPC 11. Power Supply Current vs. V–
10
ALL BITS “HIGH” OR “LOW”
9
8
7
V– = –15V
I–
6
IREF = 2.0mA
5
4
3
V+ = +15V
I+
2
1
0
–50
0
50
100 150
TEMPERATURE – ؇C
TPC 12. Power Supply Current vs.
Temperature
BASIC CONNECTIONS
+VREF
RREF
IIN
IREF
VIN
14
RIN
15
RREF
VIN
R15 +VREF
IREF PEAK NEGATIVE SWING OF IIN
RREF
14
R15
(OPTIONAL)
15
HIGH INPUT
IMPEDANCE
+VREF MUST BE ABOVE PEAK POSITIVE SWING OF V IN
Figure 7. Accommodating Bipolar References
MSB
LSB
B1 B2 B3 B4 B5 B6 B7 B8
+VREF
IREF
RREF
VREF (+) 14 5
6
7
8
9 10 11 12
4
IO
(R14)
R15 VREF (–) 15 3 16 13 1
2
IO
IFR
=
+VREF
RREF
؋ 255
256
0.1F
IO + IO = IFR FOR
ALL LOGIC STATES
V–
V+
CC
COMP
0.1F
FOR FIXED REFERENCE,
TTL OPERATION,
TYPICAL VALUES ARE:
VREF = 10.000V
RREF = 5.000k⍀
R15 = RREF
CC = 0.01F
VLC = 0V (GROUND)
V–
V+ VLC
Figure 8. Basic Positive Reference Operation
MSB
LSB
B1 B2 B3 B4 B5 B6 B7 B8
EO
IREF = 2.000mA
14
IO
4
2
IO
5.000k⍀
5.000k⍀
EO
FULL RANGE
B1 B2 B3 B4 B5 B6 B7 B8 IOmA IOmA EO
EO
1 1 1 1 1 1 1 1 1.992 0.000 –9.960 –0.000
HALF-SCALE +LSB 1 0 0 0 0 0 0 1 1.008 0.984 –5.040 –4.920
HALF-SCALE
1 0 0 0 0 0 0 0 1.000 0.992 –5.000 –4.960
HALF-SCALE –LSB 0 1 1 1 1 1 1 1 0.992 1.000 –4.960 –5.000
ZERO-SCALE +LSB 0 0 0 0 0 0 0 1 0.008 1.984 –0.040 –9.920
ZERO-SCALE
0 0 0 0 0 0 0 0 0.000 1.992 0.000 –9.860
Figure 9. Basic Unipolar Negative Operation
–8–
REV. B
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