289K

The 289K is a precision wide bandwidth synchronized Isolation Amplifier designed for instrumentation and industrial applications. The amplifier provides a small signal frequency response from de to 20kHz (-3dB) and a large signal response from DC to 5kHz (full power) at a gain of 1V/V. This new design offers true 3-port isolation, ±2500VDC between inputs and outputs (or power inputs), as well as 240V RMS between power supply inputs and signal outputs. Using carrier modulation techniques with transformer isolation, amplifier interrupts ground loops and leakage paths and minimizes the effect of high voltage transients. It provides 120dB common mode rejection between input and output common. The high CMV and CMR ratings of the model 289 facilitate accurate measurements in the presence of noisy electrical equipment such as motors and relays.

• Frequency response of (-3dB) DC to 20kHz, (full power) DC to 5kHz
• Gain adjustable of 1 to 100V/V, single resistor
• ±0.025% Maximum accuracy
• ±0.005%/°C Maximum low gain drift
• ±15V at ±5mA Floating power output
• 120dB CMR at 60Hz (fully shielded input stage)

Applications

Test & Measurement, Motor Drive & Control, Industrial