Product Detail
AAF-1 _________2
to 8 Channel
Anti-Alias Low-Pass Filter Card
Features
- Compatible with A/D converter boards from top manufacturers
- 2, 4, 6, or 8 differential-input anti-alias low-pass filter channels per card
- Variable cutoff frequency ranges between 0.1 Hz and 200kHz
- >120 dB/octave attenuation slope (Cauer filter type)
- ±0.15 dB passband ripple (Cauer filter type)
- Choice of 8-pole Cauer, Bessel, Butterworth, high-speed Cauer, and high-speed linear phase filters
- ±200V common-mode input
- Requires no special software to operate
- Creates portable, stand-alone solution when used in AT-SYS-400 system
Overview
The AAF-1 is a multi-channel anti-alias low-pass filter board designed for front-end signal conditioning in PC-based or stand-alone 12-bit A/D conversion systems. It protects and filters 2, 4, 6, or 8 differential analog channels. Each 2-channel pair is available with any one of 8-pole Cauer, Bessel, Butterworth, high-speed Cauer, or high-speed linear phase filter characteristics. The Cauer filter provides rapid attenuation of unwanted high frequencies (120 dB/octave), while only minimally affecting frequencies in the passband (less than 0.15dB ripple).
The cutoff frequency of the AAF-1 is set by an on-board potentiometer, which sets the same cutoff frequency for all filters on the board. Optionally, the cutoff frequency can be controlled with an external clock source for tracking filter applications, very low cutoff frequencies, or other special purposes.
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| LAPLACE INSTRUMENTS
LTD 3B, Middlebrook Way, Holt Road, Cromer, Norfolk, NR27 9JR, UK |
Tel: + 44 (0)1263 515160 Fax: + 44 (0)1263 512532 E-mail:tech@laplace.co.uk |
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