REV. B

DAC8043A

–8–

reference, the DAC output will provide a proportional dc voltage

output according to the transfer equation:

where D is the decimal data loaded into the DAC register and

GND

OP77

2R

R

2R

DIGITAL INPUTS OMITTED FOR CLARITY

10pF

Figure 19. Unipolar (2-Quadrant) Operation

BIPOLAR 4-QUADRANT MULTIPLYING

Figure 20 shows a suggested circuit to achieve 4-quadrant mul-

2, and offsets the output with the reference voltage so that a

loaded with all zeros. The positive full-scale output will be

the digital coding is offset binary. The voltage output transfer

equation for various input data and reference (or signal) values

follows:

× –V

REF

where D is the decimal data loaded into the DAC register and

Precision resistors will be necessary to avoid ratio errors. Other-

wise trimming will be required to achieve full accuracy specifica-

tions available from the DAC8043A device. See the various

Analog Devices Digital Potentiometer products for automated

trimming solutions (e.g., the AD5204 for low voltage applica-

tions or the AD7376 for high voltage applications).

GND

2R

R

2R

DIGITAL INPUTS OMITTED FOR CLARITY

OP213

10k

OP213

20k

20k

10pF

Figure 20. Bipolar (4-Quadrant) Operation

8-Lead Standard Small Outline Package [SOIC_N]

(R-8)

S-Suffix

Dimensions shown in millimeters and (inches).

8-Lead Plastic Dual In-Line Package [PDIP]

(N-8)

Dimensions shown in inches and (millimeters).

8-Lead Thin Shrink Small Outline Package [TSSOP]

(RU-8)

Dimensions shown in millimeters.

OUTLINE DIMENSIONS