Endevco 2771B-10 Remote Charge Converter

The Endevco 2771B-10 is a remote charge converter that transforms high-impedance charge output from piezoelectric accelerometers and pressure transducers into a low-impedance voltage signal suitable for extended cable transmission. This two-wire, single-ended in-line charge amplifier operates within a constant current range of 4 mA to 20 mA and delivers a fixed gain of 10 mV/pC. The low-impedance output minimizes noise pick-up and eliminates susceptibility to cable shunt capacitance, enabling seamless integration with data acquisition systems and signal analyzers equipped with IEPE constant current sources.

## Technical Specifications

• **Gain:** 10 mV/pC (fixed)
• **Frequency Response:** 1 Hz to 40 kHz
• **Power Requirement:** 4 mA to 20 mA constant current
• **Output Impedance:** 50 Ω maximum
• **DC Output Bias:** 11.5 to 15 V (-40°C to 100°C)
• **Linear Output Voltage:** 10 V peak-to-peak maximum
• **Capacitance Load:** 100 nF maximum
• **Output Signal:** Inverted
• **Input Connector:** Microdot S-50 Series
• **Output Connector:** BNC

## Key Features

• Low noise design for enhanced signal-to-noise ratio
• IEEE P1451.4 TEDS support enables storage and recall of transducer metadata including sensitivity, model number, serial number, manufacturer, calibration date, and sensor location
• Rugged, compact package for field deployment
• Operating temperature range: -40°C to 100°C

## Typical Applications

• Piezoelectric accelerometer signal conditioning
• Pressure transducer interface
• Shock and vibration measurement systems
• Long-cable sensor installations requiring noise-immune transmission

## Compatibility & Integration

The 2771B-10 interfaces directly with popular signal analyzers and signal conditioners featuring built-in IEPE constant current sources. Its Microdot S-50 input connector accommodates standard piezoelectric transducers, while the BNC output provides industry-standard signal routing.