QT240-ISSG - 4 KEY QTOUCH SENSOR IC
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.
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lQ " " " " " " " " " " " " QT240-ISSG 4 KEY QTOUCH™ SENSOR IC Four independent charge-transfer (‘QT’) touch keys Individual outputs per channel - active high Projects prox fields through any dielectric Sensitivity easily adjusted on a per-channel basis 100% autocal for life - no adjustments required 3.9V ~ 5.5V single supply operation 10s, 60s, infinite autorecal timeout (strap options) Sync pin for line sync to suppress noise Spread spectrum operation Pin options for auto recalibration timing
