Acromag AVME9510-i Multifunction Analog and Digital I/O Board

The Acromag AVME9510-i is a multifunction analog and digital I/O board for VMEbus systems, combining analog input, analog output, and digital I/O on a single card. The -i suffix denotes optocoupler isolation of field I/O from the VMEbus, mitigating ground loops and transient signal effects. It supports 16 differential or 32 single-ended analog inputs with 12-bit resolution, two analog outputs, and 32 bidirectional digital I/O points - ideal for data acquisition and control applications in space-constrained VME environments.

Technical Specifications

• 16 differential or 32 single-ended channels


• 12-bit A/D resolution


• Input ranges: 0–10V unipolar; ±5V, ±10V bipolar


• Programmable gain: 1, 2, 4, 8


• Conversion rate: 32 µS per channel


• Maximum throughput: 31.25 kHz (single channel); 1 kHz (32 channels)


• System accuracy: 0.04% of FSR


• Input overvoltage protection: ±32V continuous


• CMRR and channel-to-channel rejection: 71 dB


• RFI resistance: <0.25% of FSR @ 10 V/m (27, 151, 467 MHz)


• Gain and offset temperature coefficients: 50 ppm/°C, 24 ppm/°C maximum Analog Output


• 2 channels, non-isolated voltage output


• 12-bit D/A resolution


• Output ranges: ±2.5V, ±5V, ±10V, 0–5V, 0–10V


• System accuracy: 0.025% of FSR


• Settling time: 6 µS to 0.01% of FSR for 20V step


• Continuous short-circuit protection Digital I/O


• 32 bidirectional I/O points configured as four 8-bit ports VMEbus & Isolation


• VME64 compliance (C.1, October 1985; IEC 821–1987)


• A24/A16:D16/D08 DTB slave with Read-Modify-Write support


• Address modifiers: 29H, 2DH, 39H, 3DH


• 1 kbyte memory map; jumper-configurable base address


• Field I/O isolation: 250V AC / 354V DC continuous; 1500V AC surge withstand (60 s)

Key Features

• High-resolution 12-bit A/D and D/A converters


• Optocoupler isolation eliminates ground loops and protects against transients


• Flexible analog input configurations support differential or single-ended measurement


• Fast conversion rate and high throughput for real-time acquisition


• Programmable gain simplifies signal conditioning


• Monotonic D/A outputs with tight settling time


• Overvoltage protection on analog inputs

Typical Applications

• Industrial data acquisition on VMEbus systems


• Process control and monitoring


• Test and measurement systems requiring mixed-signal I/O


• Equipment where electrical isolation is critical

Compatibility & Integration Manufactured in the USA by Acromag, Inc. Supports standard and short address space configurations in VMEbus crates with memory space allocation from 1 MB to 8 MB per IP module in carrier boards.