Product Overview
The TE Connectivity 820M1 is a low-cost, single-axis, board-mountable piezoelectric accelerometer designed for embedded condition monitoring and preventive maintenance applications. It features a stable piezo-ceramic crystal in shear mode, low-power electronics, and a hermetically sealed LCC package. The 820M1 offers superior resolution, dynamic range, and bandwidth compared to MEMS devices, making it ideal for machine health monitoring, predictive maintenance, and impact/shock monitoring. It provides an amplified 1.25V signal output with a flat frequency response up to 10kHz.
Product Attributes
- Brand: TE Connectivity
- Model: 820M1
- Origin: Not specified
- Material: Piezo-Ceramic Crystal (Shear Mode), Alumina, Gold (Au/Sn Solder)
- Color: Not specified
- Certifications: NIST Traceable Amplitude Calibration at 80Hz (CS-SENS-0100)
Technical Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Notes/Conditions |
|---|---|---|---|---|---|---|
| ABSOLUTE MAXIMUM RATINGS | ||||||
| Supply voltage | Vdd | 1.5 | 3.3 | 5.5 | V | (2) With 1.5V-2.5V excitation, full-scale range will be limited. So 2.8V min recommended. |
| Storage temperature | TS | -40 | 125 | C | ||
| Shock limit (any axis) | gmax | 10,000 | g | |||
| ESD | -2 | +2 | kV | Human body model | ||
| OPERATING RANGES & NOISE - ACCELEROMETER | ||||||
| Measurement Range (g) | (Unless otherwise specified, all parameters are measured at 24C @ 3.3V applied) | |||||
| 25 | g | Sensitivity: 50.0 mV/g (30%), Non-Linearity: 2 %FSO, Residual Noise: 2.9 mg RMS | ||||
| 50 | g | Sensitivity: 25.0 mV/g (30%), Non-Linearity: 2 %FSO, Residual Noise: 5.9 mg RMS | ||||
| 100 | g | Sensitivity: 12.5 mV/g (30%), Non-Linearity: 2 %FSO, Residual Noise: 11.7 mg RMS | ||||
| 200 | g | Sensitivity: 5.00 mV/g (30%), Non-Linearity: 2 %FSO, Residual Noise: 23.2 mg RMS | ||||
| 500 | g | Sensitivity: 2.50 mV/g (30%), Non-Linearity: 2 %FSO, Residual Noise: 58.8 mg RMS | ||||
| 6000 | g | Sensitivity: 0.21 mV/g (30%), Non-Linearity: 2 %FSO, Residual Noise: 705 mg RMS | ||||
| Spectral Noise (mg/Hz) at 10Hz | 0.15 | mg/Hz | (For 25g range) | |||
| Spectral Noise (mg/Hz) at 100Hz | 0.07 | mg/Hz | (For 25g range) | |||
| Spectral Noise (mg/Hz) at 1kHz | 0.03 | mg/Hz | (For 25g range) | |||
| Spectral Noise (mg/Hz) at 10kHz | 0.02 | mg/Hz | (For 25g range) | |||
| ELECTRICAL SPECIFICATIONS | ||||||
| Excitation voltage | Vdd | 3.3 | 5.5 | Vdc | (Unless otherwise specified, all parameters are measured at 24C @ 3.3V applied) | |
| Zero g output voltage | Vdd/2 | 50% of applied voltage | ||||
| Average supply current | Iavg | 62 | A | |||
| Output impedance | Rout | 100 | ||||
| Warm-up time | 1 | Sec | ||||
| OPERATING SPECIFICATIONS - ACCELEROMETER | ||||||
| Full scale output | 1.25 | V | (Unless otherwise specified, all parameters are measured at 24C @ 3.3V applied) | |||
| 0.0g output voltage (bias V) | Vdd/2 | |||||
| Frequency response | 1db | Hz | 6 to 10k Hz | |||
| Frequency response | 3db | Hz | 2 to 15k Hz | |||
| Resonant frequency | 30k | Hz | ||||
| Transverse sensitivity | 8 | % | ||||
| Temperature sensitivity | 8 | % | -40 to 125C Refer to typical curve | |||
| ENVIRONMENTAL SPECIFICATIONS | ||||||
| Operating temperature | -40 | 125 | C | |||
| Storage temperature | -40 | 125 | C | |||
| Ambient humidity | 0 | 100 | % | |||
| Ingress protection | IP 68 | Hermetic Package | ||||
| Weight | 1.2 | grams | ||||
| CONNECTION TABLE | ||||||
| Pin Number | Definition | |||||
| 1 | N/C | do not connect to the circuit | ||||
| 2 | GND | |||||
| 3 | X axis output | |||||
| 4 | Vdd | |||||
| 5 | N/C | do not connect to the circuit | ||||
| 6 | N/C | do not connect to the circuit | ||||
| 7 | N/C | do not connect to the circuit | ||||
| 8 | N/C | do not connect to the circuit | ||||
| 9 | N/C | do not connect to the circuit | ||||
| 10 | N/C | do not connect to the circuit | ||||
2410301745_TE-Connectivity-20005837-01_C20436211.pdf
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