Analog Devices 31-710009-001 Analog Board AD7506JN Rev X9 ADC Module

Analog Devices 31-710009-001 Analog Board AD7506JN Rev X9 ADC Module

The Analog Devices 31-710009-001 is a multi-chip analog signal-conditioning and multiplexing board designed as a subassembly for instrumentation or data acquisition systems. The board carries an AD7506JN 16-channel CMOS analog multiplexer as its primary active IC — a Analog Devices component that routes one of 16 analog input channels to a single output, commonly used as the front-end switching stage ahead of an ADC in precision measurement systems. The board mounts into a card-cage enclosure via its metal bracket and interfaces through dual large-pitch card-edge connectors on both ends of the PCB.

Specifications & What's Included

• Manufacturer: Analog Devices
• Assembly Part Number: 31-710009-001 (silkscreen: ASSY 31-710009-001)
• Board Designation: Analog Board, sequence 01238
• Revision: Rev X9
• Primary IC: AD7506JN — 16-Channel CMOS Analog Multiplexer (Analog Devices, date code 9416)
• Additional ICs: multiple DIP and SOIC packages visible across the PCB (part numbers not fully legible at photo resolution)
• Passive components: numerous yellow tantalum capacitors, ceramic capacitors, resistors, and trim potentiometers
• Card-edge connectors: dual high-density connectors on opposite ends of the PCB for backplane/system integration
• Mounting: card-cage bracket (black anodized aluminum) on one edge — compatible with standard card-cage/VME-style chassis
• PCB color: green, double-sided with through-hole and mixed-signal construction
• Included: board only; no cables or additional accessories observed

Applications

Analog multiplexer boards of this type are used as front-end signal-switching subassemblies in instrumentation, data acquisition, and automated test equipment (ATE) systems. The AD7506JN at the heart of this board was a widely used Analog Devices part from the early-to-mid 1990s — a 16-channel single-ended CMOS multiplexer capable of switching precision analog signals with low on-resistance and minimal charge injection, making it well suited for scanning multiple sensor or measurement channels into a single ADC. Boards of this architecture appear in rack-mounted data loggers, process control instrumentation, scientific measurement systems, and similar multi-channel analog front-end applications. This board most likely functioned as a channel-selection or signal-routing stage within a larger proprietary instrument or test chassis. Buyers typically seek this part for spares support on legacy Analog Devices-based instruments, repair of original equipment, or as a building block for custom analog acquisition systems.