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AD7533UQ Datasheet(数据表) 8 Page - Analog Devices

部件型号  AD7533UQ
说明  CMOS Low Cost, 10-Bit Multiplying DAC
下载  12 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
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 8 page
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AD7533
Rev. C | Page 8 of 12
OPERATION
UNIPOLAR BINARY CODE
Table 4. Unipolar Binary Operation
(2-Quadrant Multiplication)
Digital Input
Analog Output
MSB
LSB
(VOUT as shown in Figure 11)
1 1 1 1 1 1 1 1 1 1
1024
1023
REF
V
1 0 0 0 0 0 0 0 0 1
1024
513
REF
V
1 0 0 0 0 0 0 0 0 0
=
2
1024
512
REF
REF
V
V
0 1 1 1 1 1 1 1 1 1
1024
511
REF
V
0 0 0 0 0 0 0 0 0 1
1024
1
REF
V
0 0 0 0 0 0 0 0 0 0
0
1024
0
=
REF
V
Nominal LSB magnitude for the circuit of Figure 11 is given by
=
1024
1
REF
V
LSB
3
14
1
16
2
15
4
13
AD7533
UNIPOLAR
DIGITAL
INPUT
MSB
VDD
VREF
IOUT1
VOUT
IOUT2
RFB
C1
GND
BIPOLAR
ANALOG INPUT
±10V
R1
1kΩ
R2
330Ω
LSB
NOTES
1. R1 AND R2 USED ONLY IF GAIN ADJUSTMENT IS REQUIRED.
2. C1 PHASE COMPENSATION (5pF TO 15pF) MAY BE REQUIRED
WHEN USING HIGH SPEED AMPLIFIER.
Figure 11. Unipolar Binary Operation (2-Quadrant Multiplication)
BIPOLAR (OFFSET BINARY) CODE
Table 5. Unipolar Binary Operation
(4-Quadrant Multiplication)
Digital Input
Analog Output
MSB
LSB
(VOUT as shown in Figure 12)
1 1 1 1 1 1 1 1 1 1
+
512
511
REF
V
1 0 0 0 0 0 0 0 0 1
+
512
1
REF
V
1 0 0 0 0 0 0 0 0 0
0
0 1 1 1 1 1 1 1 1 1
512
1
REF
V
0 0 0 0 0 0 0 0 0 1
512
511
REF
V
0 0 0 0 0 0 0 0 0 0
512
512
REF
V
Nominal LSB magnitude for the circuit of Figure 12 is given by
=
512
1
REF
V
LSB
3
14
1
16
2
15
4
13
AD7533
BIPOLAR
DIGITAL
INPUT
MSB
VDD
VREF
IOUT1
VOUT
IOUT2
C1
GND
A1
A2
±10V
BIPOLAR
ANALOG INPUT
R1
1kΩ
R2
330Ω
R3
10kΩ
R6
5kΩ
R4
20kΩ
LSB
NOTES
1. R3, R4, AND R5 SELECTED FOR MATCHING AND TRACKING.
2. R1 AND R2 USED ONLY IF GAIN ADJUSTMENT IS REQUIRED.
3. C1 PHASE COMPENSATION (5pF TO 15pF) MAY BE REQUIRED
WHEN USING HIGH SPEED AMPLIFIERS.
R5
20kΩ
Figure 12. Bipolar Operation (4-Quadrant Multiplication)




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