Indoor applications (doorbells, cat eyes, ceiling lights, cameras, etc.)

Home > Products > Pyroelectric Infrared Sensor > Indoor applications (doorbells, cat eyes, ceiling lights, cameras, etc.) > RS412

RS412

PROD Model: RS412
Window Size: 3*4mm
Detect Distance: 10m (lens SB-F-02) See lens selection for different distances
Sensing Angle: 120° (horizontal direction)
Working Voltage: 1.6-5.5V
Power Consuption: <8uA
Recommended IC: Customized MCU

Overview

The RS412 is a low-power pyroelectric infrared sensor (PIR) for motion detection. Using the MCU for communication, when the RS412 performs continuous motion sensing, the MCU does not need to be activated, it only activates the external MCU when motion is detected. Motion detection results are sent out via the output interrupt signal. The algorithm for motion detection is programmable and can be changed by external MCU configuration. The PIR signal is converted into a 14-bit digital value on the chip, and then enters the motion algorithm detection unit. All signal processing is digital and supports motion detection result output and raw data output.


Feature

  • Power supply voltage range 1.6V~5.5V

  • Programmable detection standard and working mode

  • Digital signal processing

  • Ultra low power consumption

  • Power supply voltage measurement

  • Temperature measurement

  • Fast and stable power-on


Datasheet

Technical data 

1.Absolute Maximum Ratings 

Description

Conditions

Symbol

Min

Typical

Max

Unit

VDD voltage

25℃

VDD

-0.3

5.5

V

25℃

Analog pin voltage

25℃


-0.3

VDD+0.3

V

25℃

Digital pin voltage

25℃


-0.3

VDD+0.3

V

25℃

Storage temperature

VDD


-30

80


2.Operating Conditions ( TAMB = +25℃  Typical VDD=3V)

Description

Conditions

Symbol

Min

Typical

Max

Unit

Operating temperature

Operating temperature range



-20


+70

Operating Voltage

Supply voltage


VDD

1.6


5.5

V

Supply current

Supply current

VDD=3V

IDD


8

11

µA

Detective Wavelength

Detective Wavelength


λ

5


14

μm

Input parameter SERIN

Input low voltage


VIL



0.2

VDD

Input high voltage


VIH

0.8



VDD

Input Current

VSS<VIN<VDD

IIN

-1


1

µA

Digital clock low time


tL

200



ns

Digital clock high time


tH

200



ns

Data Bit Write Time


tBW

2/FCLK


5/FCLK

µs

Write timeout


tWL

16/FCLK



µs

Data input and output pins INT/DOCI

Input low voltage


VIL



0.2

VDD

Input high voltage


VIH

0.8



VDD

Output current high

VOL>(VDD-1V)

IOH



-200

µA

Output current low

VOL<1V

IOL

200



µA

Input capacitance




5


pF

Force read setup time


TFR

2/FCLK




Interrupt clear time


tCL

2/FCLK




Digital clock low time


tL

200


tRA

ns

Digital clock high time


tH

200



ns

Read timeout


tRA

4/F



µs

Supply voltage measurement

Resolution



590

650

720

µV/count

ADC output range



2^13

2^14-511


Counts

Temperature measurement (requires single point calibration)

Resolution




80


Counts/K

ADC output range



511


2^14-511

Counts

Value at 300K



6700

8200

9900

Counts

Oscillator and Filter

Filter cutoff frequency



FCLK * 1.41 / 2048 / PI

Hz

HPF cutoff frequency



FCLK /16 * 1.41 / 2048 / PI

Hz

On-chip oscillator frequency


FOSC

56

64

74

kHz

System clock


FCLK


FOSC/2























Precautions:

1. The factory parameters of the sensor are obtained after a few minutes of stabilization time under the standard black body and stable test environment.

2. The sensor needs to be used with a Fresnel lens to achieve the ideal sensing angle and sensing distance.

3. The sensing distance of the sensor is directly related to the ambient temperature and humidity, the temperature and moving direction of the acquisition target, the Fresnel lens, and the magnification setting. Please consider it comprehensively when using it.

4. The sensitive components inside the sensor are relatively thin and brittle. Please handle it with care when using it. High-frequency vibration or drop impact may cause the sensitive components to break.

5. The sensor window is a silicon-based semiconductor special material vacuum-coated filter lens. Please do not touch it directly with your hands or hard objects.

6. Selection of sensor window: analog in-line dual-element products: S: 3*4mm, B: 3.8*5mm, digital in-line dual-element products: S: 3*4mm, L: 3.8*5mm, M: 4.2*5.2 mm, in-line quaternary products: X: 4*4mm, Q: 4.9*4.9mm. For details, please communicate with the salesperson.

7. Sensor lead length selection: the default default is 13.5mm. If you have other needs, you can consult the salesman for details. Customized lead length is supported.

8. For other details of the sensor, please refer to the product manual.


Related Products

        

        
Contact Us

Tel.: +86-755-82594732

E-mail: sales.sz@nysenba.com

E-mail: sales.sz@nysenba.com

Stay in Touch

Get the latest on sales, new releases and more!

Send

Follow Us

Copyright © SENBA Sensing Technology Co., Ltd. All Rights Reserved | Sitemap

SENBA Sensing Technology Co.,Ltd., was founded in 2005, with the focus on producing the top quality photoelectric components, such as PIR sensors, Photoresistors,Light Sensors, Flame detectors etc. Our strategic goal is to master the core technology.