The DMM-16R-AT features top performance and flexibility for a mid-range price. It has 16 single-ended / 8 differential analog voltage inputs with both unipolar and bipolar input ranges, programmable gain, and a maximum sampling rate of 100KHz. The 4 D/A channels and 16 digital I/O lines provide additional real-world control and monitoring capability.
The full −40 to +85°C industrial temperature operation ensures reliable and accurate performance in any embedded system application. A fully-featured software library with example programs and a graphical user interface completes the solution to make the DMM-16R-AT a solid choice for PC/104 embedded systems requiring analog I/O.
DMM-16R-AT is fully compatible with the original DMM-16-AT analog I/O module and can serve as a drop-in replacement offering reduced cost and enhanced digital I/O features. The mechanical design, connector type and pinout, and software interface are all identical the original board, eliminating any mechanical or software engineering efforts.
Technical specifications | |
Analog Inputs |
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Number of inputs | 8 differential or 16 single-ended (user selectable) |
A/D resolution | 16 bits (1/65,536 of full scale) |
Bipolar ranges | ±10V, ±5V, ±2.5V, ±1.25V, ±0.625V |
Unipolar ranges | 0-10V, 0-5V, 0-2.5V, 0-1.25V |
Input bias current | 3nA max |
Overvoltage protection | ±35V on any analog input without damage |
Input Impedance | 10^13 ohms |
Nonlinearity | ±3LSB, no missing codes |
Conversion rate | 100,000 samples/sec. max with interrupts |
Conversion trigger | Software trigger, internal pacer clock, or external TTL signal |
Input FIFO | 512 samples, 256-sample interupt threshold |
A/D interrupt |
End of A/D conversion End of A/D scan FIFO half-full |
Calibration | A/D and D/A circuits calibrated under software control using on-board precision references and EEPROM storage |
Analog Outputs |
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Number of outputs | 4 |
D/A resolution | 12 bits (1/4096 of full scale) |
Output ranges |
Fixed: ±5, 0-5V Programmable: Anywhere between 0V and 10V in 1mV increments Reset: All channels reset to mid-scale (0V for bipolar ranges) |
Output current | ±5mA max per channel |
Settling time | 6µS max to 0.01% |
Relative accuracy | ±1 LSB |
Nonlinearity | ±1 LSB, monotonic |
Digital I/O |
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Number of lines | 16, organized as 2 8-bit ports |
Logic Levels | 3.3V / 5V jumper selectable |
Termination | 10K ohm pull-up / pull-down resistors, jumper selectable |
Input voltage | Vlogic = 5V |
Logic 0 | 1.65V max |
Logic 1 | 3.35V min |
Output voltage | Vlogic = 5V |
Logic 0 | 0.44V max, Iout = 24mA |
Logic 1 | 3.76V min, Iout = -24mA |
Input voltage | Vlogic = 3.3V |
Logic 0 | 0.80V max |
Logic 1 | 2.00V min |
Output voltage | Vlogic = 3.3V |
Logic 0 | 0.44V max, Iout = 24mA |
Logic 1 | 2.25V min, Iout = -24mA |
Counter/Timers |
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A/D Timer clock | 32-bit down counter |
General purpose | 16-bit down counter |
Clock source | 10MHz on-board clock or external signal |
General |
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Bus Interface | ISA (5V) bus |
Power supply | +5V ±5% @ 390mA typical |
Weight | 64g / 2.25oz |
Environmental and physical specifications |
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Operating Temperature | 40°C to +85°C tested and guaranteed |
RoHS | Compliant |
Model | Description |
DMM-16R-AT | Diamond-MM Autocalibrating 16-ch 16-bit A/D +4-ch 12-bit D/A Extended Temp. |
C-50-18 | 50-conductor .1" pitch 18" ribbon cable Data Acquisition |