Datasheet > AS1716_V2

AS1716_V2

更新时间： 2022-10-11 11:50:58

品牌	Logo	应用领域
艾迈斯 - AMSCO		传感器
页数	文件大小	规格书
12页	317K
描述
Capacitive Sensor Interface

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AS1716_V2 数据手册

AS1716

Datasheet - Detailed Description

Fully Differential to Single Ended Conversion

The Subtractor block converts the filtered differential sensor signal into a single ended signal. Further this block provides also the gain setting

(see Section Gain Settings).

Figure 11. Subtractor Block

Gain Control

x0.5, x1, x2, x4

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.

Table 4. Gain Settings

Gain

0.5

Multiple Feedback Filter

The Multiple Feedback Filter provides a second order low pass characteristics with a minimum cut-off frequency of 16kHz and a typical fC of

23kHz. The Multiple Feedback configuration is used to avoid aliasing, to filter out high frequency components. The Output is able to drive a resis-

tor from 100Ω to 1kΩ serial to a 10nF capacitor.

Figure 12. Multiple Feedback Filter

OUT

VDDA/2

Multiple Feedback LP filter

fc ~23kHz typ.

www.austriamicrosystems.com/Capacitive-Sensors/AS1716

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