R858 Series
1.0 Hz to 102.4 kHz
8-Bit Programmable
2" x 4" Range Switch
8-Pole Filters
Description
The R858 Series are digitally programmable, 8-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. R858 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 R858 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 ampli-
tude characteristics. R858 filters operate from non-
critical ±12 to ±18 Vdc power supplies, have a 10
kW (min.) input impedance, a 10 W (max.) output im-
pedance.
Features/Benefits:
• Low harmonic distortion and wide signal-to-noise
ratio to 16 bit resolution.
• Digitally programmable corner frequency allows
selecting cut-off frequencies specific to each
application.
Programmable Specifications: . . . . . . . . . . . . . Page
Digital Tuning & Control. . . . . . . . . . . . . . . . . . . . . . 2
Available Low-Pass Models:. . . . . . . . . . . . . . . . . . .
• Plug-in ready-to-use, reducing engineering
R858L8B 8-pole Butterworth . . . . . . . . . . . . . . . 3
design and manufacturing cycle time.
R858L8E
8-pole, 6 zero elliptic, 1.77 (-80dB) . . . 3
R858L8EX 8-pole, 6 zero elliptic, 1.56 (-80dB) . . . 3
R858L8EY 8-pole, 6 zero elliptic, 2.00 (-100dB) . . 3
• Factory-set tuning range, no external clocks or
adjustments needed.
R858L8L
8-pole Bessel . . . . . . . . . . . . . . . . . . . 4
• Broad range of transfer characteristics and corner
R858L8D60 8-pole constant delay (-60dB). . . . . . . 4
R858L8D80 8-pole constant delay (-80dB). . . . . . . 4
R858L8D10 8-pole constant delay (-100dB) . . . . . . 4
frequencies to meet a wide range of applications.
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
Available High-Pass Models: . . . . . . . . . . . . . . . . . .
R858H8B 8-pole Butterworth . . . . . . . . . . . . . . . . 5
R858H8E 8-pole, 6 zero elliptic, 1.77 (-80dB) . . . 5
R858H8EX 8-pole, 6 zero elliptic, 1.56 (-80dB) . . . 5
R858H8EY 8-pole, 6 zero elliptic, 2.00 (-100dB) . . 5
General Specifications:
Ordering information. . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin-out/package data . . . . . . . . . . . . . . . . . . . . . . . . 6
• Signal reconstruction
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. ]
