AD7533
APPLICATIONS
BIPOLAR
ANALOG INPUT
V
DD
±10V
V
REF
15
14
MSB
MAGNITUDE
BITS
DIGITAL
INPUT
SIGN BIT
LSB
16
R
FB
1
2
10kΩ
I
OUT
1
1/2 AD7512DIJN
5kΩ
I
OUT
2
10kΩ
4
AD7533
13
3
V
OUT
OP97
OP97
01134-012
GND
Figure 13. 10-Bit and Sign Multiplying DAC
CALIBRATE
10V
+15V
V
DD
15
4.7kΩ
1kΩ
6.8V
(2)
SQUARE
WAVE
OP97
10kΩ
1%
C
t
10kΩ
1%
NC
V
REF
14
DIGITAL
FREQUENCY
CONTROL
WORD
MSB
LSB
16
1
2
4
I
OUT
1
I
OUT
2
AD7533
13
3
OP97
1
)
8R
t
C
t
R
t
= 10kΩ
0 < N
≤
(1 2
10
)
f=N(
TRIANGULAR
WAVE
01134-013
GND
Figure 14. Programmable Function Generator
+15V
V
IN
16
V
REF
+15V
R
FB
TEST INPUT
(0 TO – V
REF
)
14
4
I
OUT
2
MSB
LSB
2
1
AD7533
13
3
15
I
OUT
1
BIT 1
DIGITAL
INPUT
“D”
BIT 10
V
OUT
=
–V
IN
D
15
14
MSB
DIGITAL
INPUT
(TEST LIMIT)
LSB
16
1
2
4
I
OUT
1
AD790
COMPARATOR
FAIL/PASS
TEST
AD7533
13
3
I
OUT
2
01134-016
V
REF
GND
V
OUT
where:
BIT 10
BIT 1
BIT 2
D=
+
+ …
10
2
2
1
2
2
1023
0<D
≤
1024
GND
01134-014
Figure 17. Digitally Programmable Limit Detector
Figure 15. Divider (Digitally Controlled Gain)
V
REF
+15V
15
14
.
R1
16
V
OUT
R2
R
FB
1
2
BIT 1
DIGITAL
INPUT
“D”
BIT 10
MSB
LSB
4
I
OUT
1
AD7533
13
3
I
OUT
2
–V
REFD
R
1
D
R
2
–
R
1
+ R
2
R
1
+ R
2
V
OUT
= V
REF
=
GND
where:
BIT 10
BIT 1
BIT 2
+ …
10
D=
+
2
2
1
2
2
1023
0<D
≤
1024
Figure 16. Modified Scale Factor and Offset
Rev. C | Page 9 of 12
01134-015
AD [ ANALOG DEVICES ]
