VM8DAC datasheet(1/2 Pages) FREQUENCYDEVICES

Part #	VM8DAC

Description	Low Noise Digital to Analog Converter

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Manufacturer	FREQUENCYDEVICES [Frequency Devices, Inc.]

Direct Link	http://www.freqdev.com/

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Model VM8DAC

Low Noise

8 Channel VME Module

Digital to Analog Converter

VM8DAC VMEbus digital to analog converter

(DAC) boards from Frequency Devices Inc. offer

eight channels of precision low distortion/low

noise, digital to analog converters that operate

with a sample clock frequency derived from a

master external clock and a programmable time

base divider. The boards are available in a single

width B-size (6U) VME form factor that conforms

to VMEbus Revision C.1 as an A32/D32 Data

Transfer Bus Slave.

VM8DAC boards provide high (24-bit) and low

(16-bit)

resolution

data

access

to

on-board

DAC’s. The boards interpret the received parallel

data from the VMEbus as binary-2’s complement.

This data is serialized and transferred to any

selected DAC channel at a fixed master time

base where it is converted to analog signals at a

software programmable sampling rate. The DAC

channels may be configured to 16,384, 8,192,

4,096, or 2,048 samples per second.

Features/Benefits

• Eight discrete channels with programmable

sampling that provide a 24- bit DAC stage for

each channel offers the user versatile and

convenient digital to analog conversion.

• Outputs synchronized to the front panel

external

clock

allow

for

multi-card

synchronicity.

• Designed for Real Time Operating Systems

(RTOS) to provide minimal pipeline delay

(less than 5 microseconds). i.e. Linux or Vx

Works.

• Interrupt free operation provides glitch energy

of <5nV-sec and extremely low noise density

(ï100nV/ Hz ).

• VME backplane is galvanically isolated from

the

analog

section

to

reduce

system

integration problems.

VM8DAC Ordering Guide

To order, simply specify the part number below.

VM8DAC-8

1

25 Locust St., Haverhill, Massachusetts 01830

• Tel: 800/252-7074, 978/374-0761 • FAX:978/521-1839

e-mail: sales@freqdev.com

• Web Address: http://www.freqdev.com

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