Electronic cigarette pressure sensor
Single device based solutions：
1）Single differential pressure sensor to achieve suction detection
2) One side of the device diaphragm contacts the airflow channel, the other side contacts the atmospheric pressure, waterproof and oil-proof
3) Multiple output interfaces: interrupt, frequency, I2C
Product advantages：
1）Low cost: single chip differential pressure detection, more compact design of the whole machine
2）Oil-proof: using the back side air inlet, waterproof and oil-proof
(3) consistency: MEMS micron-level processing, small device variability, and factory calibration test to ensure consistent trigger pressure
Product Model：
| Product Name | Size (mm) | Power consumption (uA) | Trigger pressure (Pa) | Sensitivity | Output method | MEMS Type |
| MSPC01-GDL1 | 4.0x3.0x1.2 | 50 | - | 64 LSB/Pa | I2C | Piezoresistive |
| MSPC01-GDL6 | 2.8x1.9x0.9 | 3 | -100 ~ -300 Pa | 1%/100Pa | Interrupt + Frequency | Capacitance |
| MSPC01-GDL7 | 2.8x1.9x0.9 | 3 | -100 ~ -300 Pa | - | Interruptions | Capacitance |
| MSPC01-GDMx | 4.4x4.0x1.2 | 3 | -100 ~ -300 Pa | - | LED+atomizer driver | Capacitance |
Technical parameters：
| Parameters | Symbols | Minimum value | Typical values | Maximum value | Unit | Conditions |
| Supply Voltage | VDD | 2.4 | 3.7 | 5.5 | V | |
| Power supply current | IDD | 3 | 5 | uA | ||
| On-chip clock frequency | fOSC | 4 | 5 | 6 | kHz | |
| Output high voltage | VOH | Vdd-0.3 | V | ILOAD =1mA | ||
| Low output voltage | VOL | 0.3 | V | ILOAD =1mA | ||
| Rise time | TR | 30 | ns | |||
| Descent time | TF | 30 | ns | |||
| Turn on pressure | -300 | -100 | Pa | |||
| Protection time | 15 | 16 | 17 | s |
Link: Zhonghong Weiyu
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