Product Overview
The HP3002A MEMS hydrophone is a miniature hydrophone designed for underwater acoustic sensing and signal detection. It features a wide 20Hz to 20kHz bandwidth, high sensitivity of -180±3 dB re 1V/µPa, and a built-in preamplifier with 40dB gain. With its compact φ15 x 32 mm package and low weight, the HP3002A is suitable for installations where space is limited.
According to the provided datasheet information, this hydrophone is an omni-directional sensor with high linearity, stable sensitivity, and low sensitivity change over temperature. It is designed for measurement and monitoring tasks in underwater environments.
Key Features
- Bandwidth: 20Hz to 20kHz
- Sound sensitivity: -180±3 dB re 1V/µPa
- Nominal voltage sensitivity: 1 mV/Pa
- Built-in preamplifier with 40dB gain
- High linearity: <1%
- Omni directionality
- Compact dimensions: φ15 x 32 mm
- Light weight: under 6 g in the Chinese datasheet / 4 g in the English datasheet, excluding cable weight
Performance Highlights
Wide Frequency Response
The HP3002A MEMS hydrophone provides a wide operating bandwidth from 20Hz to 20kHz. The datasheet states that sensitivity variation across this bandwidth is within ±3dB, supporting stable acoustic signal detection over a broad frequency range.
High Sensitivity and Stable Output
With a sound sensitivity of -180±3 dB re 1V/µPa and nominal voltage sensitivity of 1 mV/Pa, the HP3002A is designed for applications requiring consistent signal detection. The product documentation also indicates strong sensitivity consistency.
Built-In 40dB Preamplifier
The integrated preamplifier with 40dB gain helps provide signal amplification directly within the hydrophone structure. Electrical characteristics listed in the datasheet include 1 Vppk output swing, 4 mA current consumption, and insulation resistance greater than 50 GΩ.
Temperature and Depth Characteristics
The HP3002A is specified for an operating temperature range of -40 to 85°C. The datasheets describe low sensitivity change with temperature and stable underwater operation. Maximum operation depth is listed as 100 m, with survival depth up to 400 m. One datasheet also lists operation depth as below 50 m in the specifications table.
Applications
Based on the provided datasheets, the HP3002A MEMS hydrophone can be used in the following applications:
- Pipeline leak detection
- Waterway monitoring
- Underwater communication
- Geological exploration
- Marine fishery
- Oil/gas seismic
Specifications Summary
- Model: HP3002A
- Product type: MEMS hydrophone
- Dynamic range: ±1000 Pa
- Bandwidth: 20 to 20000 Hz
- Sound sensitivity: -180±3 dB re 1V/µPa
- Frequency response over bandwidth: -180 ±3 dB re 1V/µPa
- Nominal voltage sensitivity: 1 mV/Pa
- Sensitivity change with temperature: <0.1%/°C or 10 ppm/°C depending on datasheet version
- Nonlinearity: <1%
- Noise resolution at 1kHz: 60 dB re µPa/√Hz
- Internal voltage gain: 40 dB
- Output swing: 1 Vppk
- Current consumption: 4 mA
- Insulation resistance: >50 GΩ
- Directionality: Omni
- Operating temperature range: -40 to 85°C
- Maximum operation depth: 100 m
- Survival depth: 400 m
- Dimensions: φ15 x 32 mm
Pin Configuration
The provided datasheets list the following pin functions:
- Power supply / Vdd
- Ground / Gnd
- AC signal output / Output
The wire color order differs between the Chinese and English datasheet versions, so pin assignment should be checked against the specific version in use before integration.
Why Choose HP3002A MEMS Hydrophone
- Miniature MEMS hydrophone structure for compact system design
- Wide bandwidth for broad underwater acoustic sensing needs
- Integrated amplification for simplified signal acquisition
- Omni-directional response for general underwater measurement and monitoring tasks
- Compact size supports installation in limited spaces and array deployment scenarios mentioned in the datasheet