SELECTING THE RIGHT SIGNAL CONDITIONING SERIES FOR YOUR APPLICATION

Analog Devices offers four Series of signal conditioning products (3B, 5B, 6B and 7B Series) that implement the important signal conditioning characteristics in different ways to address diverse applications. The characteristics that all our signal conditioning solutions offer include:

Direct Sensor Inputs - Thermocouples, millivolts, RTDs, strain gages, etc.
Isolation - Eliminates ground loops, protects measurement systems.
Amplification - Raises small signals to standard 0 to +5 V or 0 to +10 V levels.
Transducer Excitation - Provides stable current or voltage source.
Input Protection - Protects against mis-wiring, transients, excess signal.
Filtering - Reduces unwanted noise interference.
Zero Suppression - Shifts zero point to maximize accuracy and resolution.
Standard System Interface - Matches popular PC data acquisition boards.

Each of the four Series provides solutions to these needs, with varying capabilities and performance. The Series you select will determine the features you have today, and the expansion capabilities you have for the future.

Use the following table to help you decide which Series is best for your application. Once you make a selection, refer to the detailed product information to configure the right modules, backplanes, power supplies and other options to complete the solution.

  3B Series 5B Series 6B Series 7B Series
Primary Application Product Test where field configuration is important PC-based data acquisition and test systems Remote, distributed data acquisition with software configuration Industrial process control systems
Field Input: Signal Types & Ranges mV, V, mA, RTD, TC, Frequency, rms, DC & AC strain gage, LVDT, RVDT, Torque mV, V, mA, Loop Powered mA, Potentiometer, Slidewire, Frequency, RTD, TC, DC strain gage mV, V, mA, RTD, TC, Lo-and Hi-level Digital Inputs mV, V, mA, Loop Powered mA, RTD, TC
System Interface: Signal Types & Ranges Dual outputs: voltage (-10 to +10 V or 0 to +10 V) and current (0 to 20 mA or 4 to 20 mA) Voltage (-5 to +5 V or 0 to +5 V) Communications (RS-232C or RS-485 multi-drop) Voltage (0 to +10 V or +1 to +5 V)
Field Output Signal Types & Ranges Current (0 to 20 mA or 4 to 20 mA) Current (0 to 20 mA or 4 to 20 mA) Current (0 to 20 mA or 4 to 20 mA) and Lo-and Hi-level Digital Outputs Voltage (-10 to +10 V) or current (0 to 20 mA or 4 to 20 mA)
Signal Bandwidth Narrow (3 Hz) and wide (10 kHz) Narrow (4, 10, 100,400 Hz) and wide (10 kHz) Narrow (4 Hz). A/D runs at 9 samples/sec Narrow (3, 100, 300, 400 Hz)
Power Supply Requirements �15 V and +24 V DC (AC and DC input power supplies available) +5 V DC (AC power supplies available) +5 V DC (AC power supplies available) +24 V DC
Isolation: Channel to Channel and Field to System 1500 V Peak 1500 V rms Two versions: 1500 V rms and 2500 V rms 1500 V rms
Input/Output Range Configuration Over 100 standard ranges plus infinite user-configurations and factory custom ranges Over 75 standard ranges plus infinite factory custom ranges Four 6B models handle over 35 input/output ranges, configured via software Over 140 standard ranges. Special ranges available for OEM quantities
Backplane Options 4-, 8- and 16-channel, rack-mountable backplanes 8- and 16-channel, rack-mountable backplanes in both multiplexed and non-multiplexed configurations. 1- and 2-channel, DIN-rail mountable cards 1-, 4- and 16-channel, rack mountable backplanes in both RS-232C and RS-485 versions 4-, 8- and 16-channel, rack mountable backplanes. Single-channel DIN-rail sockets
Operating temperature range -25� C to +85� C -25� C to +85� C -25� C to +85� C -40� C to +85� C
Other features User calibration potentiometers. Plug-in ranging card allows field configuration. Built-in multiplexing circuit for handling large point count systems. Laser-trimmed, never needs calibration. 16-bit, high accuracy A/D converter. Engineering units conversion. 24-channel digital I/O panel with SSR interface. Small size, low cost. Widest operating temperature range.
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