QT240 - 4 KEY QTOUCH SENSOR IC

Product Overview

QUANTUM

Datasheet Details

Part number	QT240
Manufacturer	QUANTUM
File Size	284.37 KB
Description	4 KEY QTOUCH SENSOR IC
Datasheet	QT240 Datasheet
Additional preview pages of the QT240 datasheet.

Product details

Description

Sense pin (to Rs2 + Cs2) Sense pin (to Cs2, electrode) Sense pin (to Rs1 + Cs1) Sense pin (to Cs1, electrode); speed option Output, key 1 Output, key 2 Output, key 3 Ground Sync in and/or spread spectrum drive Unbonded internally Unbonded internally Output, key 4 Reset pin, active low.

Features

spread-spectrum acquisition capability, external synchronization of acquire bursts, and fast and slow acquisition modes. These modes are enabled via high-value resistors connected to the SNS pins to ground or Vdd. These resistors are required in every circuit. There are two basic modes as shown in Figures 1-1 and 1-2. Low-power Sync mode: In this mode the device operates with about a 100ms response time and very low current (about 90µA average at 4.0V). This mode allows the device to be synchron.

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Published: Dec 19, 2006 |