Impulse 8224 - Manual (Page 13)

8227 – 16 A/D, 2 D/A, 8 24V Outputs, 8 Isolated Inputs
Designed using the Maxim MAX197 successive approximation-type A/D chip, the
SeaDAC 8227 provides eight differential or 16 single-ended 12-bit inputs. The A/D
inputs can be individually configured for sensing 4-20mA current loop signals.
Additionally, the module provides two 12-bit D/A output channels, eight optically
isolated inputs, and eight open collector outputs, ideal for driving 24V devices
commonly found in industrial environments. Perfect for a variety of data
acquisition/control and test & measurement applications, the SeaDAC 8227 includes
removable screw terminals, which simplify field-wiring connections.
Optically Isolated Inputs
Input Range: 5-30VDC
Open Collector Outputs
Output Voltage: Max. 30VDC
Output Current: Max. 500mA (single output)
Output Current: Max. 580mA (all outputs)
A/D Inputs
Number of Channels: 8 differential or 16 single-ended
Resolution: 12-bits
Sampling Rate:
100K/s
A/D Input Range
Software Selectable: 0-5V, 0-10V, +/-5V, +/-10V
Hardware Selectable: 0-20mA current loop (for 4-20mA devices)
D/A Outputs
Number of Channels: 2 single-ended
Resolution: 12-bits
Output Range:
0-5V, 0-10V
Load Resistance: Min. 2K
© Sealevel Systems, Inc. - 11 - SeaDAC User Manual