Overview
Digital PIR sensor SMD334, is an integrated design of sensitive element and signal processing chip, packaged sensitive element and IC chip into sensor shield. Sensitive element transfer the human movement signal to high-precision digital chip for data processing. Then the sensor gives digital signal for easy using.
Key Features
- High-precision AD signal process
- Differential signal input mode, anti-interference ability
- Wide voltage power supply(1.5~4.5V) and power consumption
- Digital TTL signal output
Applications
- Security product
- Human body induction toys
- Human body induction lamps, and switches
- Industrial automation control
- Smart home
- IOT terminals
- Intelligent appliance
Technical Specifications
| Parameter | Symbol | Min | Typical | Max | Unit | Note |
| Working condition | ||||||
| Voltage | VDD | 1.5 | 3.0 | 4.5 | V | Power supply mode |
| Current | IDD | 10 | uA | 10uA @3V@25°C | ||
| Sensitivity | VSENS | 104 | uV | |||
| Temperature | WST | -25 | 85 | °C | ||
| Output Pin(REL) | ||||||
| Output drive current | IREL | -5 | 5 | mA | ||
| Block time | 2.0 | S | ||||
| Delay time | ONTIME | 1.0 | S | |||
| Oscillators and filters | ||||||
| Low filter cut-off frequency | 7 | Hz | ||||
| High filter cut-off frequency | 0.4 | Hz | ||||
| Chip oscillator frequency | FCLK | 32 | KHz | |||
| Chip oscillator error | FCLK_Err | -1000 | 1000 | Ppm/K | -20~80°C |
