DM5210 analog input module A-3 RTD Embedded Technologies, Inc.
DM210/DM5210 Characteristics
Typical @ 25° C
Interface
Switch-selectable base address, I/O mapped
Jumper-selectable interrupts
Analog Input
16 single-ended inputs
Input impedance, each channel ............................................................. >10 megohms
Input ranges ............................................................................... ±5, ±10, 0 to +10 volts
Overvoltage protection ..................................................................................... ±35 Vdc
Settling time ................................................................................................ 1 µsec, max
A/D Converter ............................................................................................ AD574
Type ..................................................................................... Successive approximation
Resolution .................................................. 12 bits (2.44 mV @ 10V; 4.88 mV @ 20V)
Linearity ....................................................................................................... ±1 LSB, typ
Conversion speed ...................................................................................... 20 µsec, typ
Sample-and-hold acquisition time ................................................................ 5 µsec, typ
Maximum throughput .......................................................................................... 40 kHz
Digital I/O ........................................................................................ CMOS 82C55
(Optional NMOS 8255)
Number of lines .................................................. 20 (16 at I/O connector & 4 on board)
High-level output voltage ................................................................................ 4.2V, min
Low-level output voltage ............................................................................. 0.45V, max
High-level input voltage ................................................................ 2.2V, min; 5.5V, max
Low-level input voltage ................................................................ -0.3V, min; 0.8V, max
High-level output current, Isource ............................................................. 100 µA, max
Low-level output current, Isink .................................................................. 1.7 mA, max
Darlington drive current, I(DAR) ......................................... -1.0 mA, min; -5.0 mA, max
(Available on any 8 pins from port B and port C)
Input load current ............................................................................................... ±10 µA
Input capacitance,
C(IN)@F=1MHz ................................................................................................. 10 pF
Output capacitance,
C(OUT)<@F=1MHz ........................................................................................... 20 pF
Timer/Counter ................................................................................ CMOS 82C54
(Optional NMOS 8254)
Three 16-bit down counters; binary or BCD counting
Programmable operating modes (6) ............................................. Interrupt on terminal
count; programmable one-shot; rate generator;
square wave rate generator; software-triggered strobe;
hardware-triggered strobe
Counter input source .................................................... External clock (8 MHz, max) or
on-board 8-MHz clock
Counter outputs ............................................................................. Available externally;
used as PC interrupts or
cascaded to adjacent counter
Counter gate source ................................................... External gate or always enabled
Miscellaneous Inputs/Outputs (PC bus-sourced)
±5 volts, +12 volts (if supplied by computer), ground
Current Requirements
DM210: 75 mA @ +5 volts; 12 mA @ +12 volts; 28 mA @ –12 volts (.83W)
DM5210: 240 mA @ +5 volts (1.2W)
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