2. FEATURES
Analog Inputs
32 input channels, 16-bit resolution
May be configured as 32 single-ended, 16 differential, or 16 SE + 8 DI
Programmable gain, range, and polarity on inputs
250,000 samples per second maximum sampling rate
1024-sample FIFO for reduced interrupt overhead
Autocalibration of all input ranges under software control
Patented hardware-implemented auto-autocalibration
Analog Outputs
4 analog output channels with 16-bit standard, 12-bit optional resolution, 5mA max output current
Multiple fixed full-scale output ranges, including unipolar and bipolar ranges
Programmable full-scale range
Patented hardware-implemented auto-autocalibration
1024-sample FIFO for D/A wave form generation
250 KHz maximum update rate Simultaneous update for all 4 channels capability
Digital I/O
24 bi-directional lines using integrated 8255-type circuit
Buffered I/O for enhanced current drive
Handshaking controls enable external latching of data as well as interrupt operation
User-configurable pull-up / pull-down resistors
7 additional I/O lines are fixed direction with programmable functions
Counter/Timers and A/D Triggering
1 32-bit counter/timer for A/D pacer clock and interrupt operation timing
1 16-bit general purpose counter/timer
Programmable input sources for each counter/timer
External A/D triggering and gating inputs
Multiple-board synchronization capability using A/D convert pulse out and external trigger in Interrupts may be generated by counter/timer
Miscellaneous
Extended temperature –40oC to +85oC operation No trimpots or user adjustments required for calibration.
Auto autocalibration will automatically adjust the A/D without user input. Calibration time for all modes is approximately 2 seconds.
Auto autocalibration of one A/D mode using the onboard dsPIC requires approx 0.5 seconds.
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