Model DI-5B40-01

Description

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.

Accessories

Specifications

Input Range:	±10mV
Input Bias Current:	±0.5nA
Input Resistance:	Normal: 200MΩ Power Off: 40kΩ Overload: 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.)
Nonlinearity:	±0.02% Span
Stability:	Input Offset: ±1µV/ºC Output Offset: ±40µV/ºC Gain: ±25ppm/ºC
Noise:	Input, 0.1 to 10Hz: 0.4µVrms Output, 100kHz: 10mVp-p
Bandwidth, -3dB:	10kHz
Rise Time, 10 to 90% Span:	35µs
Setting Time, to 0.1%:	250µs
Output Range:	±5V
Output Resistance:	50Ω
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

Compatible Products

Other Products in the Series