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 2.0"L x 2.0"W 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 828BP and 828BR Series are 4-pole-pair

digitally programmable band-pass and band-reject

(notch) active filters.

These new filters take

advantage of the company’s proprietary designs

using surface-mount technology to provide a low

profile, compact package in minimal board space.

828BP and 828BR filters are factory tuned to one of

three factory set tuning ranges or 8-bit custom

ranges from 1 Hz to 25.6 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 center frequency,

band-pass 828BP filters pass all frequencies lying

between the upper and lower -3 dB points of the

amplitude response curve, while 828BR band-reject

(notch) filters sharply attenuate those frequencies

that are bound and defined by the bottom of the

notch. Available Q’s for 828BP models are 1, 2, 5, or

10 and 828BR filters are 3 or 10.

Band Pass and Band Reject

828BP & 828BR Series

8 Bit Programmable

4-Pole Pair Filters

1

Digital Tuning & Control . . . . . . . . . . . . . . . . . . . . .2

Available Band-Pass Models:

828BP4

4 pole pair

. . . . . . . . . . . . . . . . . . .3

Available Band-Reject Models:

828BR4

4-pole pair

. . . . . . . . . . . . . . . . . . .3

General Specifications:

Ordering Information . . . . . . . . . . . . . . . . . . . . . . .4

Pin-Out/package data . . . . . . . . . . . . . . . . . . . . . .4