Description:
The PIR214D-D0 digital pyroelectric infrared sensor integrates the sensitive element of the traditional pyroelectric infrared sensor with the signal processing chip, and integrates the sensitive element and the IC chip into the sensor shield. The sensitive element transmits the infrared signal generated by the external human movement to the high-precision digital intelligent processing chip for processing by differential input. When the signal processing is completed, A configurable motion detection unit is implemented. Once motion was detected, an interrupt will be send to the host system. Putting the host system to sleep an overall ultra low power consumption will be achieved. All data is accessible from the host system to enable advanced signal analysis with your own detection criteria.
Feature
- High precision AD signal processing
- Serial communication
Maximum Ratings:
| Parameter | Symbol | min | max | unit | note |
| Input voltage | VDD | -0.3 | 3.6 | V | |
| Pin current | Into | -100 | 100 | mA | |
| Storage temp | Tst | -40 | 85 | ℃ |
(T=25℃) Working Condition：
| Parameter | Symbol | Min | Typ | Max | Unit | Remarks/Conditions |
| Operating Voltage | VDD | 1.8 | 3 | 3.6 | V | |
| Supply Current | IDD | 3 | 3.5 | µA | VDD =1.8 V, no load | |
| SERIN | ||||||
| Input Low Voltage | Vsil | 0.2VDD | V | |||
| Input High Voltage | Vsih | 0.8VDD | V | |||
| Input Current | Isi | -1 | 1 | µA | VSS <VIN <VDD | |
| Data Clock Low Time | Tsl | 200 | 2000 | ns | ||
| Data Clock High Time | Tsh | 200 | 2000 | ns | ||
| Data In Hold Time | Tshd | 72 | µs | |||
| Data Load Time | Tslt | 580 | µs | |||
| DOCI/INT | ||||||
| Input Low Voltage | VDIL | 0.2VDD | V | |||
| Input High Voltage | VDIH | 0.8VDD | V | |||
| Input Current | IDI | -1 | 1 | µA | ||
| Data Set-up Time | Tds | 75 | 150 | µs | Interrupt Readout Mode | |
| Data Set-up Time | Tds | 110 | 150 | µs | Forced Readout Mode | |
| Data Clock Low Time | Tdl | 200 | 2000 | ns | ||
| Data Clock High Time | Tdh | 200 | 2000 | ns | ||
| Data Bit Settling Time | Tbs | 2 | µs | CLOAD <10 pF | ||
| Sample Time | Tsmpl | 2 | 12.5 | ms | ||
| Bit Time | Tbit | 22 | µs | |||
| ADC Resolution | 14 | Bits | ||||
| PIR ADC Sensitivity | 6.5 | µV/Count | ||||
| PIR ADC Offset | 7000 | 8000 | 9000 | Counts | in stable condition | |
| Sensitivity of TAMB | 80 | Counts/K | ||||
| Counts at 300 K (27 ◦C) | 6620 | 8200 | 9980 | Counts | ||
| LPF cut-off frequency | f1 | 7 | Hz | |||
| HPF cut-off | f2 | 0.2/0.4 | Hz | configurable | ||
Internal Block Diagram：
Product Dimension:
| Pin Description： | |
| 1 | VSS Power ground GND |
| 2 | DOCI/INT Sensor data output pin |
| 3 | VDD Power supply pin |
| 4 | SERIN Sensor Input Pin, register configuration |
Detection Angle：
Application:
- Long distance motion detection
- Applicable to all kinds of intrusion detectors for burglar alarms
- Energy saving applications
- Applicable to all kinds of smart household appliances
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