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DI-5B40 Analog Voltage Input Modules (Wide Bandwidth)

±10mV to ±100mV Input Range

Product Features

  • Accepts Millivolt Level Signals
  • High Level Voltage Outputs
  • 1500Vrms Transformer Isolation
  • ANSI/IEEE C37.90.1-1989 Transient Protection
  • Input Protected to 240VAC Continuous
  • 100dB CMR
  • 10kHz Signal Bandwidth
  • ±0.05% Accuracy
  • ±0.02% Linearity
  • ±1µV/°C Drift
  • CSA Certified

Products in the Series

DI-5B40-01
AC/DC Millivolt (Medium BW)
$ 188
DI-5B Amplifiers
  • ±10 mV measurement range
  • 1 kHz bandwidth (BW)
  • Passes DC to 1 kHz signals
  • Isolation supports off-ground measurements
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DI-5B40-02
AC/DC Millivolt (Medium BW)
$ 188
DI-5B Amplifiers
  • ±50 mV measurement range
  • 1 kHz bandwidth (BW)
  • Passes DC to 1 kHz signals
  • Isolation supports off-ground measurements
Go to Product Page
DI-5B40-03
AC/DC Millivolt (Medium BW)
$ 188
DI-5B Amplifiers
  • ±100 mV measurement range
  • 1 kHz bandwidth (BW)
  • Passes DC to 1 kHz signals
  • Isolation supports off-ground measurements
Go to Product Page

Each DI-5B40 wide bandwidth voltage input module provides a single channel of analog input which is amplified, isolated, and converted to a high level analog voltage output. This voltage output is logic-switch controlled, allowing these modules to share a common analog bus without the requirement of external multiplexers.

The DI-5B40 module is designed with a completely isolated computer side circuit which can be floated to ±50V from power common (pin 16). This complete isolation means that no connection is required between I/O common and power common for proper operation of the output switch.

The input signal is processed through a pre-amplifier on the field side of the isolation barrier. This pre-amplifier has a gain-bandwidth product of 5MHz and is bandwidth limited to 10kHz. After amplification, the input signal is chopped by a proprietary chopper circuit. Isolation is provided by transformer coupling, again using a proprietary technique to suppress transmission of common mode spikes or surges. The module is powered from +5VDC, ±5%.

A special input circuit on the DI-5B40 provides protection against accidental connection of power-line voltages up to 240VAC.