AD7533AQ View Datasheet(PDF) - Analog Devices

Part Name

Description

MFG CO.

AD7533AQ

CMOS Low Cost, 10-Bit Multiplying DAC

Analog Devices 

APPLICATIONS

BIPOLAR

ANALOG INPUT

±10V

VDD

DIGITAL

INPUT

MAGNITUDE

BITS

MSB

4

LSB

13

VREF

15

14

AD7533

3

GND

RFB

16

IOUT1

1

2

IOUT2

10kΩ

1/2 AD7512DIJN

5kΩ

OP97

SIGN BIT

Figure 13. 10-Bit and Sign Multiplying DAC

10kΩ

VOUT

OP97

AD7533

DIGITAL

FREQUENCY

CONTROL

WORD

CALIBRATE

10V

4.7kΩ

1kΩ

+15V

VDD

NC

6.8V

(2)

MSB

4

LSB

13

VREF

15

14

AD7533

16

IOUT1

1

2 IOUT2

OP97

10kΩ

1%

Ct

OP97

10kΩ

1%

3

GND

f

=

N

(

1

8RtCt

)

Rt = 10kΩ

0 < N ≤ (1 210)

Figure 14. Programmable Function Generator

SQUARE

WAVE

TRIANGULAR

WAVE

VIN

IOUT2

2

1

IOUT1

+15V

RFB

16

14

AD7533

MSB

4

LSB

13

BIT 1

DIGITAL

INPUT

“D”

BIT 10

3

15

VREF

VOUT =

–VIN

D

GND

VOUT

where:

D=

BIT

21

1

+

BIT 2

22

+ …BI2T1010

0 < D ≤ 1023

1024

Figure 15. Divider (Digitally Controlled Gain)

VREF

TEST INPUT

+15V (0 TO – VREF)

DIGITAL

INPUT

(TEST LIMIT)

MSB

4

LSB

13

15

14

AD7533

3

16

IOUT1

1

2

IOUT2

AD790

COMPARATOR

FAIL/PASS

TEST

GND

Figure 17. Digitally Programmable Limit Detector

VREF

+15V

BIT 1

DIGITAL

INPUT

“D”

BIT 10

MSB

4

LSB

13

15

14

AD7533

RFB

16

IOUT1

1

2

IOUT2

R1

R2

–VREFD

.

VOUT

3

GND

VOUT = VREF =

R2

– R1D

R1 + R2

R1 + R2

where:

D=

BIT

21

1

+

BIT 2

22

+ …BI2T1010

0 < D ≤ 1023

1024

Figure 16. Modified Scale Factor and Offset

Rev. C | Page 9 of 12

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