DAC0802 datasheet(7/11 Pages) NSC

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Typical Applications (Continued)

DS005686-6

B1 B2 B3 B4 B5 B6 B7 B8

Pos. Full Scale

11111111

−9.920 +10.000

Pos. Full Scale−LSB

11111110

−9.840

+9.920

Zero Scale+LSB

10000001

−0.080

+0.160

Zero Scale

10000000

0.000

+0.080

Zero Scale−LSB

01111111

+0.080

0.000

Neg. Full Scale+LSB

00000001

+9.920

−9.840

Neg. Full Scale

00000000 +10.000

−9.920

FIGURE 7. Basic Bipolar Output Operation (Note 5)

DS005686-18

If RL = RL within ±0.05%, output is symmetrical about ground

B1 B2 B3 B4 B5 B6 B7 B8

Pos. Full Scale

11111111

+9.960

Pos. Full Scale−LSB

11111110

+9.880

(+)Zero Scale

10000000

+0.040

(−)Zero Scale

01111111

−0.040

Neg. Full Scale+LSB

00000001

−9.880

Neg. Full Scale

00000000

−9.960

FIGURE 8. Symmetrical Offset Binary Operation (Note 5)

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For complementary output (operation as negative logic DAC), connect inverting input of op amp to IO (pin 2), connect IO (pin 4) to ground.

FIGURE 9. Positive Low Impedance Output Operation (Note 5)

DAC0802 数据表(PDF) 7 Page - National Semiconductor (TI)

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