EG4002 Datasheet – Pyroelectric Infrared Sensor – EG

Part Number : EG4002, EG4002A ~ EG400G

Function : Infrared Pyroelectric Special Chip

Package : SOP 8, DIP 8

Manufactures : EG Micro


EG4002 is a dedicated analog-to-digital mixed-signal IC for signal amplification and processing of pyroelectric infrared sensors. It integrates operational amplifiers, dual threshold voltage comparators, reference voltage sources, delay time and blocking time timers, and State controller, dedicated to anti-theft alarm system, the human body door control devices, lighting control switches and other occasions.

EG4002 power supply operating voltage of +3 V ~ +6 V, the use of COMS process mixed digital-analog integrated circuits, 8-pin package design, reducing the number of external circuit components and the overall cost, saving PCB board space.






1. 8 pin-pin dedicated pyroelectric chip, the external circuit is simple, low cost
2. Static power consumption is small, 3V power supply when the power is less than 45uA, 5V power supply when the power consumption is less than 75uA, ideal for battery-powered system applications
3. High input impedance operational amplifier, with a variety of sensor matching, signal and processing
4. Two-way discriminator, can effectively suppress interference
5. Built-in reference voltage for internal comparator and operational amplifier reference voltage
6. Built-in delay time timer and blocking time timer, change the oscillator frequency can be set to delay time
7. Little external components, only the first-class op amp configuration gain and oscillator RC devices that can work reliably
8. Power supply + 3V ~ + 6V


Application Circuit



EG4002 Datasheet


RE200B Datasheet – Passive Infrared Sensor – Nippon

Part Number : RE200B

Function : Pyroelectric Passive Infrared Sensor

Package : TO-5 Metal Can Type

Manufactures : Nippon Ceramic




The RE200B is a passive infrared sensor designed to pick up heat radiation of wave lengths in a band around 10 microns. It contains two active elements configured as balanced differential series opposed type. This results in good compensation of environmental temperature and excellent sensitivity for small changes of a spatial temperature pattern. Thermal signals far below one microwatt are sufficient to trigger a sufficient output voltage change.





Functional Description

If the active elements of the PIR sensor are exposed to a change in the surrounding temperature field, electrical charges are separated within the sensor elements. The voltage across the sensors controls a J-FET source follower impedance converter and thus modulates the output current of the PIR detector. The spectral sensitivity of the sensor is controlled by the optical transfer characteristics of the window in the case and has been optimized to pick up radiation of the human body.

1. alarm systems

2. consumer electronics

3. human body detection

4. automatic switches


Reference Site

1. RE200B PIR Component

2. PIR Sensor RE200B Arduino


RE200B Datasheet