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AS1716

Datasheet - D e t a i l e d D e s c r i p t i o n

Fully Differential to Single Ended Conversion

The Subtractor block converts the filtered differential sensor signal into a single ended signal. Further this block pro-

vides also the gain setting (see Section Gain Settings).

Figure 11. Subtractor Block

Gain Settings

By means of pins GA and GB, 4 gain settings (x0.5, x1, x2, x4) can be realized.

The default gain setting is 4, GA=0 and GB=0.

Multiple Feedback Filter

The Multiple Feedback Filter provides a second order low pass characteristics with a minimum cut-off frequency of

quency components. The Output is able to drive a resistor from 100

Ω to 1kΩ serial to a 10nF capacitor.

Figure 12. Multiple Feedback Filter

Table 4. Gain Settings

Gain

GA

GB

0.5

1

1

11

0

20

1

40

0

-

+

Gain Control

x0.5, x1, x2, x4

-

+

OUT

Multiple Feedback LP filter

fc ~23kHz typ.

VDDA/2