D824 Series
2" x 2"
Differential Input
4-Pole Filters
1.0 Hz to 102.4 kHz
8-Bit Programmable
Description
The D824 Series are digitally programmable low
pass and high pass active filters with differential
input that are tunable over a 256:1 frequency range.
D824 filters are available with any one of five
standard factory-set tuning ranges up to 102.4 kHz.
These units contain 8 CMOS logic inputs .
All D824 Series models are convenient, low profile,
easy to use fully finished filters which require no ex-
ternal components or adjustments. They feature low
harmonic distortion, and near theoretical phase and
amplitude characteristics. D824 filters operate from
non-critical ± 12 to ± 18 Vdc power supplies, have a
10 kW (min.) input impedance, a 10 W (max.) output.
Features/Benefits:
• Compact 2" x 2" design minimizes board space
requirements.
• Digitally programmable corner frequency allows
selecting cut-off frequencies specific to each appli-
cation.
• Plug-in ready-to-use, reducing engineering de-
sign 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.
Programmable Specifications. . . . . . . . . . . . . . Page
Digital Tuning & Control . . . . . . . . . . . . . . . . . . . . . . 2
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 Low-Pass Models:. . . . . . . . . . . . . . . . . . .
D824L8B 4-pole Butterworth . . . . . . . . . . . . . . . . . 3
D824L8L 4-pole Bessel . . . . . . . . . . . . . . . . . . . . . 3
D824L8Y2 4-pole Cheby (0.2 dB Ripple) . . . . . . . . . 3
D824L8Y5 4-pole Cheby (0.5 dB Ripple) . . . . . . . . . 3
Available High-Pass Models: . . . . . . . . . . . . . . . . . .
D824H8B 4-pole Butterworth . . . . . . . . . . . . . . . . . 4
D824H8Y2 4-pole Cheby (0.2 dB Ripple) . . . . . . . . . 4
D824H8Y5 4-pole Cheby (0.5 dB Ripple) . . . . . . . . . 4
General Specifications:
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin-out/package data. . . . . . . . . . . . . . . . . . . . . . . . . 5
• 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