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Figure 4. simple reference biasing, Figure 3, Figure 4 – Rainbow Electronics ADC10D040 User Manual

Page 21: Applications information

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Applications Information

(Continued)

variability. The reference voltage at the V

REF

pin should be

bypassed to AGND with a 5 µF (or larger) tantalum or
electrolytic capacitor and a 0.1 µF ceramic capacitor.

The circuit of Figure 6 may be used if it is desired to obtain
a precise reference voltage not available with a fixed refer-
ence source. The 604

Ω and 1.40k resistors can be replaced

with a potentiometer, if desired.

20029770

FIGURE 3. Use of an input transformer for single-ended to differential conversion can simplify circuit design for

single-ended signals.

20029771

FIGURE 4. Simple Reference Biasing

ADC10D040

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