NS312 Product Introduction
NS312 is a PIR sensor that integrates a digital control circuit and a human-motion detector within an electromagnetic shielding housing. The sensor transmits the detected motion signal to a digital intelligent integrated circuit through a high-impedance differential input circuit. The integrated circuit then converts the signal into a digital signal using an ADC, with all signal processing performed on-chip.
NS312 Product Features
Digital signal output
Low power consumption、Low voltage ,Short warm-up time
High power supply rejection ratio, anti-RF interference
The second-order Butterworth bandpass filter with built-ininfrared sensor shields input interference at other frequencies
Good stability, effective suppression of repetitive misoperations
The application circuit is simple
Timing time 2S output
NS312 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 the device reliability.)
| Parameter | Symbol | Min | Max | Unit | Remarks |
| Operating Temp | TST | -30 | 70 | ℃ |
|
| Current into any pin | Into | -100 | 100 | mA |
|
| Storage Temp | TST | -40 | 80 | ℃ |
|
2. Operating Condition (T=25°C, VDD=3V, unless stated otherwise)
| Parameter | Symbol | Min | Typ | Max | Unit | Remarks |
| Regular voltage | VDD | 2.7 | 3 | 3.3 | V |
|
| Operation current | IDD | 9 | 12 | 15 | μA |
|
| Sensitive threshold | VSENS |
| 100 |
| μV |
|
| Detective wavelength | λ | 5 |
| 14 | μm |
|
| Outputs REL |
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| 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 | Not adjustable |
| High REL output locking time | TOH |
| 2 |
| s |
|
| Oscillator and filter |
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| LPF cutoff frequency |
|
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| 7 | Hz |
|
| HPF cutoff frequency |
|
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| 0.44 | Hz |
|
| On-chip oscillator frequency | FCLK |
|
| 64 | kHz |
|
NS312 Product Specification Document
Access detailed technical information, configuration guides, and solutions notes to support your evaluation and implementation of the NS312 Series.
NS312 DatasheetComprehensive technical specifications and detailed reference data for modules and components.
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NS312 PinoutStandard pin assignment, interface definition and signal pin functions for reliable connection.
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NS312 Circuit DiagramComplete wiring diagram, application schematic and typical connection scheme for design reference.
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