R854 Series
1.0 Hz to 102.4 kHz
8-Bit Programmable
Description
The R854 Series are digitally programmable, 4-pole
low-pass and high-pass active filters that contain a
low and a high programmable frequency range, with
each range tunable over a 256:1 ratio. R854 filters
are available with any two of five standard factory-
set tuning ranges or 8-bit custom ranges from 1.0 Hz
to 102.4 kHz. These units contain 8 CMOS logic
inputs that can be operated in a transparent or
latching mode and 1 logic input for range selection.
All R854 Series models are convenient, easy to use
fully finished filters which require no external
components or adjustments. They feature low
harmonic distortion, and precision phase and
amplitude characteristics. R854 filters operate from
non-critical ±12 to ±18 Vdc power supplies, have a
10 kΩ (min.) input impedance, a 10
Ω
(max.) output
impedance.
Features/Benefits:
• Digitally programmable corner frequency allows
selecting cut-off frequencies specific to each
application.
• Plug-in ready-to-use, reducing engineering design
and manufacturing cycle time.
• Factory-set tuning range, no external clocks or
adjustments needed.
• Broad range of transfer characteristics and corner
frequencies to meet a wide range of applications.
• Low profile design, ideal for rack mount
installations.
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
• Real and compressed time data analysis
• Noise elimination
• Signal reconstruction
Programmable Specifications
. . . . . . . . . . . . .
Page
Digital Tuning & Control . . . . . . . . . . . . . . . . . . . . . . 2
Available Low-Pass Models:
. . . . . . . . . . . . . . . . . . .
R854L4B 4-pole Butterworth. . . . . . . . . . . . . . . . . . 3
R854L4L 4-pole Bessel . . . . . . . . . . . . . . . . . . . . . 3
R854L8Y2 4-pole Cheby (0.2 dB Ripple) . . . . . . . . . 3
R854L8Y5 4-pole Cheby (0.5 dB Ripple) . . . . . . . . . 3
Available High-Pass Models:
. . . . . . . . . . . . . . . . . .
R854H8B 4-pole Butterworth. . . . . . . . . . . . . . . . . . 4
R854H8Y2 4-pole Cheby (0.2 dB Ripple) . . . . . . . . . 4
R854H8Y5 4-pole Cheby (0.5 dB Ripple) . . . . . . . . . 4
General Specifications:
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin-out/package data. . . . . . . . . . . . . . . . . . . . . . . . . 5
2" x 4" Range Switch
4-Pole Filters
1784 Chessie Lane, Ottawa, IL 61350 • Tel: 800/252-7074, 815/434-7800 • FAX: 815/434-8176
e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com
FREQUENCYDEVICES [ FREQUENCY DEVICES, INC. ]
