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DAC08Q/883C View Datasheet(PDF) - Analog Devices

Part Name
Description
Manufacturer
DAC08Q/883C Datasheet PDF : 12 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
DAC08
10.000V
MSB
LSB
B1 B2 B3 B4 B5 B6 B7 B8 10.000k
IREF(+) = 2.000mA
14
IO
4
EO
2
EO
IO
B1 B2 B3 B4 B5 B6 B7 B8 EO
EO
POS. FULL RANGE
1 1 1 1 1 1 1 1 9.920 +10.000
10.000kPOS. FULL RANGE LSB 1 1 1 1 1 1 1 0 9.840 +9.920
ZERO-SCALE +LSB
1 0 0 0 0 0 0 1 0.080 +0.160
ZERO-SCALE
1 0 0 0 0 0 0 0 0.000 +0.080
ZERO-SCALE LSB
0 1 1 1 1 1 1 1 +0.080 0.000
NEG. FULL-SCALE +LSB 0 0 0 0 0 0 0 1 +9.920 9.840
NEG. FULL-SCALE
0 0 0 0 0 0 0 0 +10.000 9.920
Figure 10. Basic Bipolar Output Operation
VREF
10V
10k
POT
LOW T.C.
4.5k
14
IREF(+) 2mA
39k
1V
15
APPROX
5k
Figure 11. Recommended Full-Scale Adjustment Circuit
RREF
14
IO
4
R15
VREF
IFS
VREF
RREF
IO
2
15
NOTE
RREF SETS IFS; R15 IS FOR
BIAS CURRENT CANCELLATION.
Figure 12. Basic Negative Reference Operation
10k
15V
2
10V 6
VO
5
REF01*
MSB
LSB
B1 B2 B3 B4 B5 B6 B7 B8
5.000k
IO 4
5.0k
V+ VCC VLC
IO 2
5.0k
+15V
OP711
POS. FULL RANGE
B1 B2 B3 B4 B5 B6 B7 B8 EO
1 1 1 1 1 1 1 1 +4.960
EO ZERO-SCALE
1 0 0 0 0 0 0 0 0.000
NEG. FULL-SCALE +1 LSB 0 0 0 0 0 0 0 1 4.960
NEG. FULL-SCALE
0 0 0 0 0 0 0 0 5.000
4
*OR ADR01
+15V 15V
15V
Figure 13. Offset Binary Operation
RL
4
IO
OP711
2
IO
EO
0 TO +IFR ؋ RL
IFR
=
255
256
IREF
FOR COMPLEMENTARY OUTPUT (OPERATION AS A NEGATIVE LOGIC DAC),
CONNECT INVERTING INPUT OF OP AMP TO IO (PIN 2); CONNECT IO (PIN 4) TO
GROUND.
Figure 14. Positive Low Impedance Output Operation
4
IO
OP711
EO
0 TO IFR ؋ RL
2
IO
RL
IFR
=
255
256
IREF
FOR COMPLEMENTARY OUTPUT (OPERATION AS A NEGATIVE LOGIC DAC),
CONNECT NONINVERTING INPUT OF OP AMP TO IO (PIN 2); CONNECT IO (PIN 4)
TO GROUND.
Figure 15. Negative Low Impedance Output Operation
REV. B
TTL, DTL
VTH = 1.4V
VLC
1
VTH = V LC 1.4V
15V CMOS
VTH = 7.6V
15V
ECL
CMOS, HTL, NMOS
V+
9.1k
6.2k
VLC
0.1F
13k
20k
2N3904
A
39k
3k
2N3904
TO PIN 1
VLC
6.2k
2N3904
A
20k
3k
2N3904
TO PIN 1
VLC
R3
400A
5.2V TEMPERATURE COMPENSATING V LC CIRCUITS
Figure 16. Interfacing with Various Logic Families
–9–
 

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