HT7610A

HT7610A/HT7610B/HT7611A/HT7611B General Purpose PIR Controller Features · Operating voltage: 5V~12V · Standby current: 100mA (Typ.) · On-chip regulator · Adjustable output duration · CDS input · 40 second warm-up Applications · PIR light controllers · Motion detectors · ON/AUTO/OFF selectable by MODE pin · Override function · Auto-reset if the ZC signal disappears over 3 seconds · 16-pin DIP package · Alarm systems · Auto door bells General Description The HT761x is a CMOS LSI chip designed for use in automatic PIR lamp control. It can operate with a 2-wire configuration for triac applications or with a 3-wire configuration for relay applications. The chip is equipped with operational amplifiers, a comparator, timer, a zero crossing detector, control circuit, a voltage regulator, a system oscillator, and an output timing oscillator. Its PIR sensor detects infrared power variations induced by the motion of a human body and transforms it to a voltage variation. If the PIR output voltage variation conforms to the criteria (refer to the functional description), the lamp is turned on with an adjustable duration. The HT761x offers three operating modes (ON, AUTO, OFF) which can be set through the MODE pin. While the chip is working in the AUTO mode the user can override it and switch to the TEST mode, or manual ON mode, or return to the AUTO mode by switching the power switch. Selection Table Part No. ZC Off/On for Override HT7610A HT7610B 2 times HT7611A HT7611B 1 time ...