DAC7528UB BURR-BROWN [Burr-Brown Corporation], DAC7528UB Datasheet - Page 7

• Manufacturer Part Number: DAC7528UB
• Description: CMOS Dual 8-Bit Buffered Multiplying DIGITAL-TO-ANALOG CONVERTER
• Manufacturer: BURR-BROWN [Burr-Brown Corporation]

APPLICATION INFORMATION
FIGURE 5. Bipolar Configuration 4 Quadrant Multiplication.
1µF
FIGURE 4. Unipolar Configuration with Gain Trim.
C
D
+
+5V
DGND
V
DAC7528
DD
DAC A
DAC B
1µF
C
V
V
IN A
V
D
V
IN B
REF A
+
R
100
REF B
R
100
1
DGND
3
+5V
V
DD
V
DAC7528
V
R
I
R
I
A1, A2 OPA602 or 1/2 OPA2107.
DAC A
AGND
DAC B
REF B
OUT A
OUT B
REF A
FB A
FB B
47
47
R
R
2
4
C1 10pF
C2 10pF
–
+
–
+
A1
A2
R
I
R
I
OUT A
OUT B
AGND
FB A
FB B
V
V
20k
20k
OUT A
OUT B
R
R
2
6
C
10pF
C
10pF
1
2
7
TABLE I. Unipolar Output Code.
TABLE II. Bipolar Output Code.
–
+
–
+
A3
A1
MSB
MSB
10k
R
DATA INPUT
3
1111 1111
1000 0001
1000 0000
0111 1111
0000 0000
1111 1111
1000 0000
0000 0001
0000 0000
DATA INPUT
R
R
10k
10k
A1–A4, OPA602 or 1/2 OPA2107.
5
5
LSB
LSB
–
+
–
+
20k
20k
A4
A2
R
R
4
1
DAC7528
–V
REF
ANALOG OUTPUT
–V
ANALOG OUTPUT
(255/256) = –1/2V
–V
+V
–V
REF
+V
–V
REF
V
V
REF
REF
REF
REF
OUT A
OUT B
(255/256)
0V
(1/256)
(127/128)
0V
(127/128)
(1/128)
(1/128)
REF
®