www.instrument.com - Thursday, August 21, 2008
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PCI-20003M-2/PCI-20003M-4 Overview

2 Channel Analog or Current output Expansion Modules

The PCI-20003M Series modules add two analog output channels to any expandable Intelligent Instrumentation board. The PCI-20003M-2 generates analog output voltages in the range of ±10V. In addition to voltage outputs, the PCI-20003M-4 also provides current outputs. Both the PCI-20003M-2 and -4 modules have 2 output channels with separate digital-to-analog converters (DACs).

All DACs have 12-bit resolution, and you can program them for ±5V, 0 to 10V and ±10V full-scale output. In addition, you can program the PCI-20003M-4 for either 4 to 20mA or 5 to 25mA current output.

Features & Benefits

•Dual Channel

•12-Bit Resolution

•1/2LSB Linearity Error

•Voltage and Current Outputs Available

Hardware Specifications

Parameter	Conditions	Specifications

Analog Outputs
Number of Channels		2
Resolution		12 bits (1 part in 4,096)
Voltage Ranges		±5V, ±10V, 0 to 10V full scale
Current Ranges	PCI-20003M-4 only	4 to 20mA, 5 to 25mA
Accuracy
Gain	Voltage output	±0.5LSB
	Current output	0.6% FSR
Linearity Error	Voltage output, maximum	±0.5LSB
	Current output	±1.5LSB
Offset Voltage	0 to +50° C	±0.5LSB
Monotonicity	No missing code	12 bits
Output Stage
Output Current	Voltage mode	±5mA
	Current mode	0 to 25mA
Voltage Compliance	Current mode	15V or loop supply*
System Throughput**
Analog Output		250K outputs/second
Physical Characteristics
Power Requirements***	Voltage out or current out with external loop power
	+5V	180mA maximum
	+15V	50mA maximum
	-15V	70mA maximum
	Current out with internal loop supply
	+5V	180mA maximum
	+15V	100mA maximum
	-15V	70mA maximum
Operating Temperature Range		0 to 70° C
External Loop Power	Current output mode	+13.5 to 35V; I=50mA maximum
* When operating in the current output mode, the minimum output swing depends on the maximum output current and the external load resistance as follows: Vmin = 5.2 + ImaxRL, where Imax = 20 or 25mA and RL = Load Resistance.
** Hardware limit only. Software may reduce speed.
*** Refer to the data sheet of the host board to determine available power.