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

Applications

• Power line interference rejection

• Transducer output filtering

• Production test instrumentation

• Medical electronics equipment and research

• Comb filtering and equalization

• Noise and harmonic analysis

• RMS measurements

• Frequency spectrum analysis

Features/Benefits:

• Compact 32-pin footprint minimizes board space

requirements.

• Plug-in ready-to-use, reducing engineering design

and manufacturing cycle time.

• Factory tuned, no external clocks or adjustments

needed

• Broad range of center frequencies to meet a wide

range of applications.

Description:

The D68BP and D68BR Series of small 4-pole-pair

fixed-frequency, precision band-pass and band-

reject (notch) active filters that provide high

performance in a compact 32-pin DIP package, with

a broad range of fixed center frequencies (fo) from 1

Hz to 100 kHz.

Each filter type features a near

theoretical amplitude/phase response along with low

output voltage noise enabling these filters to achieve

a 10,000:1 or better dynamic signal range.

Pretuned to within ±2% of the fixed, user specified

center frequency, D68BP band-pass filters pass all

frequencies lying between the upper and lower -3dB

points of the amplitude response curve, while D68BR

band-reject (notch) filters sharply attenuate those

frequencies that are bound and defined by the

bottom of the notch.

Available Q’s for D68 BP

models are 1, 2, 5, or 10 and D68BR filters are 3 or

10.

Band Pass and Band Reject

D68BP & D68BR Series

Fixed Frequency

4-Pole Pair Filters

1

D68BP4

4 pole pair

. . . . . . . . . . . . . . . . . . .2

Available Band-Reject Models:

D68BR4

4-pole pair

. . . . . . . . . . . . . . . . . . .2

General Specifications:

Ordering Information . . . . . . . . . . . . . . . . . . . . . . .3

Pin-Out/Package Data . . . . . . . . . . . . . . . . . . . . . .3