NS412

NS412 Product Introduction

NS412 is a type of PIR sensor that integrates a digital control circuit and a human detection sensor within an electromagnetic shielding housing. The human body detection sensor couples the sensed human movement signal to a digital intelligent integrated circuit chip via a very high-impedance differential input circuit. The digital intelligent integrated circuit converts this signal into a digital format, and when the PIR signal exceeds the selected digital threshold, it triggers a delayed REL level output. The timing parameters are set through external resistance, which controls the continuous working delay time of the connected electrical appliance. All signal processing is performed on a single chip.

NS412 Product Features

• Digital signal processing,no drift and aging

• High power supply rejection ratio, anti-radio frequency interference(mobile phone,WiFi,etc.)

• A second-order Butterworth bandpass filter with built-in infrared sensor to shield input interference at other frequencies

• Ontime adjustable
  

• Good stability and effective suppression of repeated malfunctions

• Low power consumption and simple application circuit
  

NS412 Technical Data

1. Absolute Maximum Ratings

Electrical characteristics (beyond those listed below may cause permanent damage to the device. Exposure to absolute maximum ratings may affect device reliability.)

Parameter	Symbol	Min	Max	Unit	Remarks
Operating Temp	TST	-30	70	°C
Current into any pin	Into	-100	100	mA
Storage Temp	TST	-40	80	°C

2. Operating Conditions (T = 25°C, VDD = 3V, unless stated otherwise)

Parameter	Symbol	Min	Typ	Max	Unit	Remarks
Supply voltage	VDD	2.2	3	3.7	V
Supply current	IDD	9	9.5	11	μA
Sensitivity threshold	VSENS		90		μV
Detective wavelength	λ	5		14	μm
Outputs REL
Output current low	IOL	10			mA	VOL < 1V
Output current high	IOH	-10			mA	VOH > (VDD - 1V)
Low REL output locking time	TOL		2		s	Non-adjustable
High REL output delay time	TOH	2		3600	s
Inputs ONTIME
Input voltage range		0		VDD/2	V	Adjustable between 0V and VDD/2
Input leakage current		-1		1	μA
Oscillator and Filter
LPF cutoff frequency				7	Hz
HPF cutoff frequency				0.44	Hz
On-chip oscillator frequency	FCLK			64	kHz

NS412 Product Specification Document

Access detailed technical information, configuration guides, and solutions notes to support your evaluation and implementation of the SB-2023 Series.

• Product Datasheet

  Complete technical specifications, performance curves, dimensional drawings, and ordering information.

  Download
• Product Datasheet

  Complete technical specifications, performance curves, dimensional drawings, and ordering information.

  Download
• Product Datasheet

  Complete technical specifications, performance curves, dimensional drawings, and ordering information.

  Download