D94 Datasheet, PDF (1/5 Pages) Frequency Devices, Inc. – 4 Pole Single Power Supply Anti-Aliasing Low-Pass Filters

D94 Series
1 Hz to 400 kHz*
Low Noise Fixed Frequency
4 - Pole Single Power Supply
Anti-Aliasing Low-Pass Filters
Description:
The D94 Series of small 4-pole fixed-frequency,
precision active filters provide high performance
linear active filtering in a compact package, with a
broad range of corner frequencies and a choice
of Butterworth or Bessel transfer functions. These
filters are designed to work with up to 16 Bit A/D
converters. These fully self-contained units
require no external components or adjustments.
Each model comes factory tuned to a user-
specified corner frequency between 1 Hz and 400
kHz* and operate with low total harmonic
distortion over a wide dynamic input voltage
range from non-critical single +5VDC to +18VDC
power supply. Each filter has a built in internal
+6VDC and -6VDC power supplies to power the
filter.
Features/Benefits:
• Low harmonic distortion and wide signal–
to–noise ratio to 16 bit resolution.
• Available with Single or Differential inputs.
• Available with DC coupled or AC coupled
inputs. (The AC corner frequency is a
single pole at 2 Hz.)
• Compact 1.5"L x 2.0"W x 0.4"H minimizes
board space requirements.
• Plug–in ready–to–use, reducing
engineering design and manufacturing
cycle time.
• Factory tuned, no external clocks or
adjustments needed.
• Available in Butterworth or Bessel transfer
functions to meet a wide range of
applications.
• Requires a single +5V to +18V power
supply to operate (The module generates
± 6 VDC internally to operate the filter).
• One to one offset input that works with
your A/Ds reference output to set the
output of the filter in the center of your
A/Ds input range.
• Available with built in gains from 0 dB to
60 dB.
Applications
• Anti–alias filtering
• Data acquisition systems
• Communication systems and electronics
• Medical electronics equipment and research
• Aerospace, navigation and sonar applications
• Sound and vibration testing
• Acoustic and vibration analysis and control
• Noise elimination
• Signal reconstruction
Available Low-Pass Models:
D94L4B
4-Pole Butterworth
D94L4L
4-Pole Bessel
* Bessel 1 Hz to 200 Khz
1
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