90PF Slot Card

Dual Channel Programmable

Introduction

Filter/Amplifier Card

Description

Each 90PF slot card provides two channels of

precision, low noise and distortion (-100 dB typical)

programmable filters with up to 60 dB of pre and 20

dB of post adjustable gain.

Filter modules are programmable from 0.1 Hz to

300 kHz utilizing 4, 11-bit tuning ranges. When

assembled with a high-pass filter in channel one

(1) and a low-pass filter in channel two (2), 90PF

slot cards can be configured on the fly to operate

as a low-pass, high-pass, band-pass, or band-

reject (notch) filter.

Customers can select any

combination of two available filter modules per slot

card to meet their application specific signal

conditioning needs.

Front panel mounted BNC’s provide easy access

for connection of signal input and output. Other

features include differential or single-ended input,

AC or DC-coupled input, single ended output, LED

clipping indicators and fine adjustment of DC

offset. Operating the 90PF in filter BYPASS mode

allows the design engineer to use each channel as

a precision instrumentation grade programmable

amplifier.

Features

• 0.1 Hz to 300 kHz Tuning Range

• Selectable single-ended or differential input

• Gain/phase matched channels

• LED clipping indicators

• Memory storage for up to 9 set-ups/slot card

• <-100 dB signal-to-noise ratio to 100 kHz BW

• Programmable gain, 60 dB pre and 20 dB post

Applications

• Anti-Aliasing

• Sound Measurement

• Noise Testing

• Audio Communications

• Medical Research

• Industrial Process Control

• Seismic Analysis

• Vibration Analysis

Available 90PF Low Pass Filters

Part #

dB

# Poles

Filter Type

L8B

-100

8

Butterworth

L8L

-100

8

Bessel

L8E

-88

8, 6-zero Elliptic, 1.77

L8EX

-80

≤100kHz

8, 6-zero Elliptic, 1.56

-60>100kHz

L8EY

-100

8, 6-zero Elliptic, 2.00

L8D80 -80

8, 6-zero Constant Delay

L8D10 -100

8, 6-zero Constant Delay

Available 90PF High Pass Filters

Part #

dB

# Poles

Filter Type

H8B

-100

8

Butterworth

H8E

-88

8, 6-zero Elliptic, 1.77

H8EX

-80

≤100kHz

8, 6-zero Elliptic, 1.56

-60>100kHz

H8EY

-100

8, 6-zero Elliptic, 2.00

1

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