90PF Slot Card
Dual Channel Programmable
Filter/Amplifier Card
Introduction
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.
Available 90PF Low Pass Filters
Part # dB
# Poles Filter Type
L8B
L8L
-100
-100
8
8
Butterworth
Bessel
Features
L8E
L8EX
-88
-80≤100kHz
-60>100kHz
8, 6-zero Elliptic, 1.77
8, 6-zero Elliptic, 1.56
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0.1 Hz to 300 kHz Tuning Range
Selectable single-ended or differential input
Gain/phase matched channels
L8EY -100
L8D80 -80
L8D10 -100
8, 6-zero Elliptic, 2.00
8, 6-zero Constant Delay
8, 6-zero Constant Delay
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
Available 90PF High Pass Filters
Part # dB # Poles Filter Type
Butterworth
Applications
H8B
-100
8
H8E
H8EX
-88
-80≤100kHz
-60>100kHz
8, 6-zero Elliptic, 1.77
8, 6-zero Elliptic, 1.56
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Anti-Aliasing
Sound Measurement
Noise Testing
Audio Communications
Medical Research
Industrial Process Control
Seismic Analysis
H8EY -100
8, 6-zero Elliptic, 2.00
Vibration Analysis
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