Isolated ±50mV 5B-style Amplifier
- Accepts ±50mV 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
- View Dimensions and pinout
Each DI-5B40 and DI-5B41 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 (see block diagram). This voltage output is logic-switch controlled, allowing these modules to share a common analog bus without the requirement of external multiplexers.
The DI-5B modules are 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. If desired, the output switch can be turned on continuously by simply connecting pin 22, the Read-Enable pin to I/O Common, pin 19.
The input signal is processed through a preamplifier on the field side of the isolation barrier. This preamplifier 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 and DI-5B41 modules provides protection against accidental connection of power-line voltages up to 240VAC.
16-channel backplane for 5B modules. Each module has its own analog bus. For use with DI-5B Modules.
Dual-channel backplane. For use with DI-5B Modules.
Base element with snap foot required for use with models DI-5B03 and DI-5B04 Backplanes. For use with DI-5B Modules.
5V DC Power Supply for use with both DI-5B and DI-8B Backplanes.
|Input Bias Current:||±0.5nA|
|Input Resistance:||Normal: 200MΩ
Power Off: 40kΩ
|Input Protection:||Continuous: 240Vrms max
Transient: ANSI/IEEE C37.90.1-1989
|CMV, Input to Output:||Continuous: 1500Vrms max
Transient: ANSI/IEEE C37.90.1-1989
|CMR (50Hz or 60Hz):||100dB|
|NMR:||120dB per Decade above 10kHz|
|Accuracy:||±0.05% Span ±10µV RTI ±0.05% (VZ) (Includes nonlinearity, hysteresis and repeatability; RTI=Referenced to input; VZ is the input voltage that results in 0V output.)|
|Stability:||Input Offset: ±1µV/ºC
Output Offset: ±40µV/ºC
|Noise:||Input, 0.1 to 10Hz: 0.4µVrms
Output, 100kHz: 10mVp-p
|Rise Time, 10 to 90% Span:||35µs|
|Setting Time, to 0.1%:||250µs|
|Output Protection:||Continuous Short to Ground|
|Output Selection Time:
(to ±1mV of Vout)
|6µs at Cload = 0 to 2000pF|
|Output Current Limit:||±20mA max|
|Output Enable Control:||Max Logic “0”: +0.8V
Min Logic “1”: +2.4V
Max Logic “1”: +36V
Input Current, “0”, “1”: 0.5µA
|Power Supply Voltage:||+5VDC ±5%|
|Power Supply Current:||30mA|
|Power Supply Sensitivity:||±2µV/%RTI
(RTI=Referenced to input.)
|Mechanical Dimensions:||2.28" × 2.26" × 0.60"
(58mm × 57mm × 15mm)
|Operating Temperature:||-40ºC to +85ºC|
|Storage Temperature:||-40ºC to +85ºC|
|Relative Humidity:||0 to 95% Noncondensing|
|RFI Susceptibility:||±0.5% Span Error at 400MHz, 5W, 3ft|
Other Products in the Series
AC/DC Millivolt (Medium BW)
- ±10 mV measurement range
- 1 kHz bandwidth (BW)
- Passes DC to 1 kHz signals
- Isolation supports off-ground measurements