284J

Features:

High CMV Isolation: ±5000V pk, 10ms Pulse; ±2500V dc Continuous

High CMR: 110dB min with 5kW imbalance

Low Nonlinearity: 0.05% @ 10V pk-pk Output

High Gain Stability: ±0.0075%/°C, ±0.001%/1000 hours

Low Input Offset Voltage Drift: 10mV/ °C, G = 100V/V (Model 286J)

Resistor Programmed Gain: 1 to 10V/V (284J)

1 to 100V/V (286J)

Isolated Power Supply: ±8.5V dc @ ±5mA (284J)

±15V dc @ ±15mA (286J)

Meets IEEE Std 472: Transient Protection (SWC)

Meets UL Std 544 Leakage @ 115V ac, 60Hz:

2.0mA max (284J)

2.5mA max (286J)

Application

Fetal Heartbeat Monitoring
Multi-Channel ECG Recording
Ground Loop Elimination in Industrial and Process
Control High Voltage Protection in Data Acquisition
Systems 4-20mA Isolated Current Loop Receiver


Description

The models 284J, 286J are low cost, high performance isolation amplifiers designed for high CMV isolation and low leakage in biomedical, industrial and data acquisition systems. Using modulation techniques with reliable transformer isolation, the models 284J, 286J protect both patients and ultrasensitive equipment from high CMV transients up to ±5000V pk (10ms pulse) or 2500V dc continuous, high CMR of ll0dB (5kW imbalance) and feature maximum leakage current of less than 3mA rms, @ 115V ac, 60Hz (inputs to power common).

The model 284J is a self-contained isolation amplifier for single channel applications. For multi-channel applications, the model 286J combined with an external synchronizing oscillator such as the model 281 may be used; up to 16 model 286J amplifiers can be driven from 1 model 281 oscillator. Additional channels may be obtained by configuring an unlimited number of 284Js with several ganged 281 oscillators.

Both models also provide resistor-programmable gain of 1 to 10V/V (284J) or 1 to 100V/V (286J), high gain stability of 0.0075%/ °C, low nonlinearity of 0.05% @ 10V pk-pk output and isolated power supply outputs of ±15V dc @ ±15mA (286J) or ±8.5V dc @ ±5mA (284J).