Pepper Computer Modular Computers RS232 User Manual

SMART I/O User’s Manual

©1996 PEP Modular Computers GmbH

October 01, 1996

Page 5 - 107

Chapter 5  Analog Modules

The SM-DAC1 provides a fast, 12-bit, bipolar (

±

 10V DC), 2/6-channel

digital to analog converter. Two configurable red LEDs on the front panel

form the user interface while an on-board EEPROM stores unique calibra-

tion data required by the signal converter.

A version of the SM-DAC1 for current output (0 .. 20mA) is also available.

† The conversion time applies per channel for a full scale voltage swing of

(-10V .. +10V)

Isolation

1.0 kV Optoisolated from the system

Output

2/6 Outputs
Output Range 

±

 10V DC (0 .. 20mA)

12-bit DAC with 1-bit non-linearity
11-bit Repeating Accuracy
Glitch-Free Power-On-Reset
2mA (max.) output current (voltage version)
75

µ

s Conversion Time @ 1MHz SCLK 

†

Ext. Vcc

24V DC (-10% .. +20%)

EEPROM

256 Byte serial EEPROM for Calibration Data

Front Panel

2 Red LEDs (User Configurable)

Power Cons.

660mW (max. voltage version)

400mW (max. current version)

Temperature Range Standard (0

°

C to +70

°

C), Ext./Storage (-40

°

C to +85

°

C)

Module Weight

70g

ID Byte

$40, read by the SPI Interface