Analog Modules; Sm-Dad1; Introduction; Specifications - PEP Modular Computers Modular Computers RS485 User Manual

Chapter 5 Analog Modules

5. Analog Modules

5.1 SM-DAD1

5.1.1 Introduction

The SM-DAD1 provides a fast, 12-bit, bipolar ( 10V DC), 4-channel
analog to digital converter and, apart from its ADC role, may also be used as
a fast 12-bit, 2-channel unipolar/bipolar digital to analog converter. Two
configurable red LEDs on the front panel form the user interface while an
on-board EEPROM stores unique calibration data (obtained in steady-state
conditions at 25 C STP) required by the signal converters.

5.1.2 Specifications

Input
Output
EEPROM
Front Panel
Power Cons.
Temperature Range Standard (0 C to 70 C), Extended (-40 C to +85 C)
Temperature Drift
Module Weight
ID Byte
March 12, 1996
4 Differential Voltage Inputs
Input Range 10V
12-bit ADC with 1-bit non-linearity
10-bit repeating accuracy
Overvoltage Protection ( 35V)
Input Impedance approx. 450 k
Filter set to 10kHz
On-chip Reference Voltage
13 s Conversion Time @ 1MHz SCLK
2 Unipolar / Bipolar Outputs
Short-Circuit Protected
12-bit DAC with 1-bit non-linearity
Output Range 10V or 0..10V
5mA max. Output Current
Power-up Reset without glitch (Unipolar)
4mV Zero Code Offset Error (Unipolar)
Settling Time 40 s (-10V to +10V)
256-byte serial EEPROM for Calibration Data
Red LEDs (user configurable)
350mW (min.), 450mW (max.)
6 LSB (max.) across temp. range -40 C to +85 C (ADC)
4 LSB (max.) across temp. range -40 C to +85 C (DAC)
70g
$50, read by the SPI Interface
©1996 PEP Modular Computers GmbH
SMART I/O User's Manual
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