TLVH432
Texas Instruments
Figure 1. Complete ADXL1002 with IEPE Compatible Circuit Diagram ... IC1 TLVH432 ... IC4 TLVH432
Reference DesignAnalog
CN0532: IEPE-Compatible Interface for Wideband MEMS Accelerometer Sensors
IEPE-compatible interface for ADXL1002 MEMS accelerometers, enabling wideband vibration monitoring for condition-based maintenance (CbM) applications.
Overview
This reference design (CN0532) details an Integrated Electronics Piezoelectric (IEPE) compatible interface for the ADXL1002 high-frequency MEMS accelerometer. Designed to facilitate the transition from piezoelectric sensors to MEMS technology in condition-based monitoring (CbM), the circuit operates with a 12.5 V bias and 4 mA current consumption. It utilizes an AD8541 rail-to-rail amplifier for signal buffering and TLVH432 shunt regulators for internal power regulation. The design supports an 11 kHz bandwidth and maintains the low-noise performance (25 µg/√Hz) required for industrial predictive maintenance and vibration analysis.
Use Cases
- Industrial machinery vibration sensing
- Predictive maintenance systems
- Retrofitting legacy IEPE data acquisition equipment with MEMS sensors
- High-bandwidth structural health monitoring
Topics
MEMS accelerometer
IEPE interface
vibration monitoring
condition-based monitoring
CbM
ADXL1002
AD8541
predictive maintenance
shunt regulator
Industry 4.0
Referenced Parts
353C23
PCB Piezotronics
The reference sensor in this case is a piezoelectric sensor (Model 353C23)
| TLVH432 | Texas Instruments | Figure 1. Complete ADXL1002 with IEPE Compatible Circuit Diagram ... IC1 TLVH432 ... IC4 TLVH432 |
| TL432B | Texas Instruments | The minimum cathode current of the IC4 (TL432B) is 1 mA (maximum). |
| AD8541 | Analog Devices | AD8541 General-Purpose CMOS Single Rail-to-Rail Amplifier |
| ADXL1002 | Analog Devices | ADXL1002 Low Noise, High Frequency MEMS Accelerometer |
| 353C23 | PCB Piezotronics | The reference sensor in this case is a piezoelectric sensor (Model 353C23) |