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AS1716 Datasheet Capacitive Sensor Interface

Manufacturer: austriamicrosystems AG

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Datasheet Details

Part number AS1716
Manufacturer austriamicrosystems AG
File Size 442.31 KB
Description Capacitive Sensor Interface
Datasheet download datasheet AS1716 Datasheet

General Description

AS1716 is an analog front end specifically designed for unbiased Capacitive Sensors, as for instance Knock Sensors in Automotive, to be interfaced with Analog Digital Converters with Sample and Hold input stages.

The device provides differential inputs, a 1st order low pass filter to cutoff the high frequency noise components, differential to single ended conversion, programmable gain stage and a 2 pole low pass Multiple Feedback Filter.

The Knock Sensor is a Piezo Electric device that generates a voltage if it is stressed.

Overview

www.DataSheet4U.com AS1716 C a pa c i t i v e S e n s o r I n t e r f a c e D a ta s h e e t 1.

Key Features

  • ! ! ! ! Differential input stage with wide input range Resistive sensor biasing (VDDA/2) Programmable Gain (x0.5, x1, x2, x4) Internal 2 order low pass Multiple Feedback Filter with a min. cut off frequency of 16kHz Single supply operation: 4.5V to 5.5V Operating Temperature range: -40°C to +125°C High CMRR: 55dB (min) EMC characterized by IEC 61967-4 (1Ω / 150Ω Method) EMC characterized by IEC 62132-4 (Direct Power Injection) Automotive qualified to AECQ100 for IC and PPAP level 3 8-pin SOIC P.

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