DAC08 Analog Devices, DAC08 Datasheet - Page 12

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DAC08

Manufacturer Part Number
DAC08
Description
8-Bit, High Speed, Multiplying D/A Converter (Universal Digital Logic Interface)
Manufacturer
Analog Devices
Datasheet

Specifications of DAC08

Resolution (bits)
8bit
Dac Update Rate
11.8MSPS
Dac Settling Time
85ns
Max Pos Supply (v)
+18V
Single-supply
No
Dac Type
Current Out
Dac Input Format
Par

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DAC08
FOR COMPLEMENTARY OUTPUT (OPERATION AS A NEGATIVE LOGIC DAC).
CONNECT INVERTING INPUT OF OP AMP TO I
TO GROUND.
Figure 30. Positive Low Impedance Output Operation
*OR ADR01
REF01*
15V
10V
2
4
V
O
V
6
5
TTL, DTL,
TH
V
4
2
= 1.4V
LC
5.000kΩ
5.0kΩ
1
I
I
+15V –15V
O
O
MSB
V+
B1 B2 B3 B4 B5 B6 B7
O
–V
(PIN 2): CONNECT I
AD8671
10kΩ
C
15V
R
C
L
0 TO –I
I
FR
6.2k Ω
9.1k Ω
V
TH
V
=
15V CMOS
V
LC
TH
255
256
= V
FR
= 7.6V
Figure 32. Interfacing with Various Logic Families
LC
LSB
×
I
B8
REF
I
I
O
O
R
1.4V
E
0.1 µ F
L
O
4
2
O
(PIN 4)
Figure 29. Offset Binary Operation
V
LC
AD8671
Rev. C | Page 12 of 20
5.0kΩ
+15V
–15V
13k Ω
39k Ω
"A"
2N3904
–5.2V
ECL
E
O
FOR COMPLEMENTARY OUTPUT (OPERATION AS A NEGATIVE LOGIC DAC).
CONNECT NONINVERTING INPUT OF OP AMP TO I
TO GROUND.
POS. FULL RANGE
ZERO SCALE
NEG. FULL SCALE +1LSB
NEG. FULL SCALE
3k Ω
TEMPERATURE COMPENSATING V
2N3904
TO PIN 1
Figure 31. Negative Low Impedance Output Operation
6.2k Ω
V
LC
CMOS, HTL, NMOS
20k Ω
20k Ω
4
2
"A"
B1
1
1
0
0
V+
B2
2N3904
1
0
0
0
I
I
B3
O
O
1
0
0
0
3k Ω
B4
1
0
0
0
B5
1
1
0
0
R
LC
L
B6
2N3904
CIRCUITS
1
0
0
0
TO PIN 1
R3
400 µ A
O
AD8671
B7
(PIN 2): CONNECT I
1
0
0
0
V
B8
LC
1
0
1
0
0 TO –I
I
FR
+4.960
–4.960
–5.000
0.000
=
E
255
256
O
FR
×
I
REF
E
R
O
L
O
(PIN 4)

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