COMPUTER BOARDS PC104-DAS08
Datasheet
Extracted Text
SPECIFICATIONS PC104-DAS08 Analog Input & Digital I/O Revision 4, October, 2001 © Copyright 2001, MEASUREMENT COMPUTING CORPORATION SPECIFICATIONS Power Consumption +5V: 130 mA typical, 185 mA max +12V: 18 mA typical, 25 mA max −12V: 12 mA typical, 18 mA max Analog Input Section A/D converter type AD674 Resolution 12 bits Number of channels 8, single-ended Input Ranges ±10V, ±5V, 0 to +10V, switch selectable Polarity Unipolar/Bipolar, switch selectable A/D pacing Internal counter or external source (Interrupt Input, jumper selectable, rising edge) or software polled A/D Trigger sources External polled gate trigger (Digital In 1) Data transfer Interrupt or software polled DMA None A/D conversion time 15 μs Throughput 20 kHz, PC dependent Accuracy ±0.01% of reading ±1 LSB Differential Linearity error ±1 LSB Integral Linearity error ±0.5 LSB No missing codes guaranteed 12 bits Gain drift (A/D specs) ±25 ppm/°C Zero drift (A/D specs) ±10μV/°C Common Mode Range ±10V CMRR 72 dB Input leakage current (@25° C) 100 nA Input impedance 10 MegOhms min Absolute maximum input voltage ±35V Digital Input / Output Digital Type (Main connector) Output: 74LS273 Input: 74LS244 Configuration 4 fixed output bits, 3 fixed input bits Number of channels 4 out, 3 in Output High 2.7 volts min @ −0.4 mA Output Low 0.4 volts max @ 8 mA Input High 2.0 volts min, 7 volts absolute max Input Low 0.8 volts max, −0.5 volts absolute min Output power-up / reset state Interrupts 2 thru 7, jumper-selectable Interrupt enable Programmable Interrupt sources External (Interrupt In), rising edge Counter Section Counter type 82C54 Configuration 3 down-counters, 16 bits each Counter 0 - independent, user configurable Source: user connector (Counter 0 In) Gate: user connector (Gate 0) Output: user connector (Counter 0 Out) Counter 1 - independent, user configurable Source: user connector (Counter 1 In) Gate: user connector (Gate 1) Output: user connector (Counter 1 Out) Counter 2 - independent, user configurable Source: PC SysClk via divide by 2 circuit Gate: user connector (Gate 2) Output: user connector (Counter 2 Out) Clock input frequency 10 MHz max High pulse width (clock input) 30 ns min Low pulse width (clock input) 50 ns min Gate width high 50 ns min Gate width low 50 ns min Input low voltage 0.8V max Input high voltage 2.0V min Output low voltage 0.4V max Output high voltage 3.0V min Environmental Operating temperature range 0 to 50°C Storage temperature range −20 to 70°C Humidity 0 to 90% non-condensing Measurement Computing Corporation 16 Commerce Boulevard, Middleboro, Massachusetts 02346 Tel: (508) 946-5100 Fax: (508) 946-9500 E-mail: info@measurementcomputing.com www.measurementcomputing.com
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