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
1.0 Hz to 100 kHz
Fixed Frequency
D78 & DP78 Series
32 Pin DIP
8-Pole Filters
Available Low-Pass Models: . . . . . . . . . . . . . . . .
D78L8B
8-pole Butterworth . . . . . . . . . . . . . . .2
DP78L8B 8-pole Butterworth (Low Power) . . . . .2
D78L8L
8-pole Bessel . . . . . . . . . . . . . . . . . . .2
DP78L8L 8-pole Bessel (Low Power) . . . . . . . .2
Available High-Pass Models:
D78H8B
8-pole Butterworth . . . . . . . . . . . . . . .2
General Specifications:
Pin-out/package data & ordering information . . . .3
Description
The D78 and DP78 Series of low-power, fixed-
frequency, linear active filters are high performance,
8-pole filters in a compact package. These
Butterworth and Bessel low-pass and Butterworth
high-pass filters (D78 only) combine linear active
filter design with the space savings of a 32-pin dual
in-line package (DIP). Each model comes factory
tuned to a user-specified corner frequency between
1 Hz and 100 kHz (DP78, 1 Hz to 5kHz). These fully
self-contained units require no external components
or adjustments and operate with dynamic input
voltage range from non-critical ±5V to ±18V power
supplies.
Applications
• Anti-alias filtering
• Vibration & shock analysis
• Automatic test equipment
• Aerospace, navigation and sonar
• Communication systems
• Medical electronics
• Sound and vibration testing
• Noise elimination
• Process control
Features/Benefits:
• Low cost solution for low frequency signal
conditioning
• Compact DIP design minimizes board space
requirements
• Plug-in ready-to-use, reducing engineering design
and manufacturing time
• Factory tuned, no external clocks or adjustments
needed saving time and labor of other discrete
assembly solutions
• Low harmonic distortion and wide signal-to-noise
ratio to 12 bit resolution
1
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