Acromag has launched the AXM-75, a multi-function, I/O extension module for hardware simulation, in-circuit diagnostics, machine control, signal intelligence, and image processing. The extension module adds the ADC, DAC, and I/O DSP functions to a FPGA processor board and plugs directly onto the company's PCI and express mezzanine cards reconfigurable FPGA cards equipped with a mezzanine connector. The module can be used to interface many high-level analogue voltage signals to and from the FPGA, and operates between -40 and 85°C. It has TTL (transistor-transistor logic) level digital I/O channels to monitor and control discrete devices and a 68pin high density cable interconnect receptacle for easy field I/O connections. The module features a low-pass filter for removing EMI and 16 differential analogue input channels of ±10V with programmable gain of 1x, 2x, 4x, or 8x. Two quad DACs drive eight analogue output channels with ±10V. Each input and output channel has its own high-speed 16bit, 250kHz ADC and 16bit DAC, respectively, to allow updating of individual channels or all outputs simultaneously, says the company. The DAC settling time is 10µS. The I/O channels provide the ability to read or write 5V logic levels on TTL devices. The open drain outputs are pulled high via a pull-up resistor.
