DAC729

10

FIGURE 10. Using an External Op Amp with Buffer and

External Reference for

±10V Output.

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40

39

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18-Bit

DAC

From System

Reference

R

L

From System

Reference

OPA633

OPA602

Ref. In

SECOND MSB ADJUSTMENT (Pin 38)

1. Set Code = 11 0000 0000 0000 0000

2. Measure V

OUT

3. Set Code = 10 1111 1111 1111 1111

4. Measure V

5. Adjust 2nd MSB potentiometer to make difference +38

µV.

6. Repeat steps 1 through 5 to confirm.

MSB ADJUSTMENT (Pin 39)

1. Set Code = 10 0000 0000 0000 0000

2. Measure V

OUT

3. Set Code = 01 1111 1111 1111 1111

4. Measure V

5. Adjust the MSB potentiometer to make difference +38

µV.

6. Repeat steps 1 through 5 to confirm.

APPLICATIONS

The DAC729 is the DAC of choice for applications requir-

ing very high resolution, accuracy, and wide dynamic range.

DIGITAL AUDIO

The excellent linearity and differential linearity are ideal for

PCM professional audio and waveform generation applica-

tions.

FIGURE 11. DAC729 Simplified Schematic.