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Products   >   Services   >   End-of-Life Products   >   Ruby-MM-412/812/1612 Analog Output Module
4, 8 or 16 analog voltage outputs
12-bit D/A resolution
Unipolar and bipolar operation
Simultaneous updating of all DACs
24 digital I/O lines with 10K pull-ups
Requires only +5V power supply
Fully calibrated for highest accuracy
-40ºC to +85ºC operation
Customers who use this product also use:
50-pin Data Acquisition Cable

This product can be customized and ruggedized. Click here for more information.
See Ruby-MM-412/812/1612 Analog Output Module Technical Resources
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Ruby-MM-412/812/1612 Datasheet
(.pdf, 152.9 kb)
Ruby-MM-412/812/1612 Manual v2.0
(.pdf, 301.6 kb)
82C55 Digital I/O IC Datasheet
(.pdf, 275.4 kb)
Ruby-MM-1612 Example Programs for UD 5.91
(.zip, 455.8 kb)
Universal Driver Software

Ruby-MM-412/812/1612 Analog Output Module

4-, 8- or 16-Channel 12-bit Analog Output PC/104 Module

Not Recommended for New Designs. See Ruby-MM-1616A for new applications.

Ruby-MM-412/812/1612 Analog Output Module
click for a larger image
Analog Output Ranges
I/O Header Pinout
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The Ruby-MM series provides 4, 8 or 16 channels of 12-bit resolution analog voltage outputs plus 24 digital I/O lines on a single PC/104 module. An on-board precision voltage reference circuit offers analog output ranges of 0-2.5V, 0-5V, and 0-10V in unipolar mode or ±2.5V, ±5V, and ±10V in bipolar mode. All analog outputs can source or sink up to 5mA simultaneously.

The analog outputs are based on the DAC8412 quad 12-bit D/A converter chip. This chip resets all outputs to mid-scale on power-up, meaning 0V for bipolar ranges and 1/2 the full-scale voltage for unipolar ranges. To obtain power-on reset to 0V for unipolar ranges, a special-order version is available using the DAC8413 which powers up to zero scale instead.

On the 16-channel model, each group of 8 channels can be set for a different output range. On the 4- and 8-channel models, all outputs have the same output range. All outputs are updated simultaneously, either with a software command or in response to an external trigger.

The board includes 24 digital I/O lines using an 82C55 chip. All I/O lines have 10K Ohm pull-up resistors for guaranteed logic levels on power-up.

Ruby-MM-1612 is designed and tested for extended temperature operation (-40ºC to +85ºC). It requires only +5VDC from the system power supply via the PC/104 bus. Analog ±15V supplies are derived from miniature DC/DC converters on the board. All I/O is contained on a single 50-pin connector compatible with standard .1” connector ribbon cables, such as Diamond Systems’ C-50-18.

Analog Output Ranges

The analog output ranges are selected with a jumper block on the board. The table below lists the possible ranges and the associated output resolution.

The 0-2.5V and +/-2.5V ranges are user-adjustable and can be set anywhere between 0V and 2.5V by adjusting a potentiometer on the board.

Output Range Resolution (1 LSB)
0 - 10V 2.44mV
0 - 5V 1.22mV
0 - 2.5V 0.61mV
±10V 4.88mV
±5V 2.44mV
±2.5V 1.22mV

I/O Header Pinout

Analog Gnd 1 2 Vout 0
Analog Gnd 3 4 Vout 1
Analog Gnd 5 6 Vout 2
Analog Gnd 7 8 Vout 3
Analog Gnd 9 10 Vout 4
Analog Gnd 11 12 Vout 5
Analog Gnd 13 14 Vout 6
Analog Gnd 15 16 Vout 7
Vout 8 17 18 Vout 9
Vout 10 19 20 Vout 11
Vout 12 21 22 Vout 13
Vout 14 23 24 Vout 15
Digital I/O A7 25 26 Digital I/O A6
Digital I/O A5 27 28 Digital I/O A4
Digital I/O A3 29 30 Digital I/O A2
Digital I/O A1 31 32 Digital I/O A0
Digital I/O B7 33 34 Digital I/O B6
Digital I/O B5 35 36 Digital I/O B4
Digital I/O B3 37 38 Digital I/O B2
Digital I/O B1 39 40 Digital I/O B0
Digital I/O C7 41 42 Digital I/O C6
Digital I/O C5 43 44 Digital I/O C4
Digital I/O C3 45 46 Digital I/O C2
Digital I/O C1 47 48 Digital I/O C0 / Ext. Trigger
+5V 49 50 Digital Gnd


Analog Outputs
Number of outputs 4, 8 or 16, voltage output
Resolution 12 bits (1 part in 4096)
Fixed output ranges 0-5V, 0-10V unipolar, ±5V, ±10V bipolar
Adjustable range Preset to 2.5V for 0-2.5V, or ±2.5V. Can be adjusted anywhere between 0V and 2.5V
Setting time 6µs max to ±.01%
Accuracy ±1LSB
Integral nonlinearity ±1LSB max
Differential nonlinearity -1LSB max, guaranteed monotonic
Output current ±5mA max per channel
Minimum load 2KΩ, any no. of channels
Update method Simultaneous, all channels update
Reset All DACs reset to mid-scale
Digital I/O
Number of lines 24, CMOS/TTL compatible (82C55)
Input voltage
    Logic 0: -0.5V min, 0.8V max
    Logic 1: 2.0V min, 5.5V max
Output voltage
    Logic 0: 0.0V min, 0.4V max
    Logic 1: 3.0V min, 4.6V max
Output current ±2.5mA max per line
Pull-up resistor 10KΩ resistor on each I/O line
External trigger TTL/CMOS compatible, 10KΩ pull-up resistor, active high edge
Reset All digital I/O lines are set to input and all data registers are set to 0
Power supply (Vcc) +5VDC ±10%
Current requirement 430mA typical
All outputs open
Operating temperature -40°C to +85°C Extended
Size 3.550" x 3.775"
Data bus 8 bits
Weight 3.0 oz/85g
RoHS Compliant

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Ruby-MM-412/812/1612 Analog Output Module
available models:
Ruby-MM 4-Channel 12-bit D/A + 24 Digital I/O Extended Temperature
Ruby-MM 8-Channel 12-bit D/A + 24 Digital I/O Extended Temperature
Ruby-MM 16-Channel 12-bit D/A + 24 Digital I/O Extended Temperature
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