Amphenol / PCB Piezotronics 483C05 Signal Conditioner

The Amphenol / PCB Piezotronics 483C05 is an eight-channel, rack-mountable signal conditioner engineered for ICP® sensor applications. It delivers ±10 V output with unity gain configuration, providing both excitation voltage (+26 VDC) and adjustable constant current (0 to 20 mA, factory set at 4 mA ± 0.5 mA) to connected sensors. The unit spans DC to beyond 1 MHz in bandwidth, with flat response from 1000 kHz at the -5 dB points and phase accuracy of ±1° at 1 kHz.

Technical Specifications

• Channels: 8 independent signal paths


• Sensor Input Type: ICP® (BNC Jack connectors)


• Output Range: ±10 V maximum


• Frequency Response: 1000 kHz (-5 dB)


• Phase Response: ±1° @ 1 kHz


• Channel Isolation: -72 dB maximum cross talk


• DC Offset: 5 sec (0 to 50%)

Key Features

• Dual excitation modes: +26 VDC or constant current (0–20 mA user-adjustable)


• AC/DC coupling and auto-zero functionality


• LED fault/bias monitor indicating open, short, or overload conditions


• Dual gain controls - each adjusts 4 channels independently


• Operates on universal AC input: 100–240 VAC, 47–63 Hz at ≤0.7 A consumption


• Standard 19" rack mount footprint: 1.75 in H × 19 in W × 13.7 in D


• Lightweight: 6.25 lb total

Typical Applications Vibration analysis, pressure measurement, force transduction, and multipoint structural health monitoring requiring low-noise, multi-channel signal conditioning with tight phase coherence across channels.

Compatibility & Integration Supports ICP® sensors and in-line ICP® charge converters. Output via BNC jack. Operating temperature range: 0 to +50 °C.