Product Detail
LS-100 _________2
to 21 Channel
Anti-Alias Low-Pass Filter System
18-Bit, Precision Analog Filter System With 2 to 18 Channels
Outstanding Specifications: 1/2 LSB Error, 18 Bit, 0.001% Gain Error, 27nV/ Noise, 0.002% THD
Features
- Ready to run 18-bit anti-aliasing
- Rack mount 19"W x 5.25"H x 13"D
- Internal linear power supply
- Filter bypass switch
- Front panel power switch
- 96 dB common-mode rejection ratio
- Gain trim to ±100 µV
- DC offset trim to ±1.0 µV
- Output impedance <10m Ohm
- Input impedance 15k Ohm
- 9-pole Butterworth and Bessel transfer functions
- Chebyshev optional
- Standard fixed frequencies of 100Hz, 200Hz, 500Hz, 1K, 2K, 5K, 10K, 20K, 50K
- Custom frequencies available upon request
Applications
- Standards laboratories
- Student laboratories.
- Precision Filtering
- Low level signals
Description
The LS-100 Lab Standard uses the GSAF-10 Gold Series of precision analog anti-aliasing filters to provide a complete system solution for precise measurement applications. The LS-100 is the first ready-to-run filter system designed specifically for 18-bit applications in a laboratory environment. With excellent specifications on common-mode rejection, filter shape accuracy, gain accuracy, and DC offset, the LS-100 reaches previously unobtained performance levels.
The combined total of all standard performance-degradation sources -- offset initial, offset drift, gain initial, gain drift, temperature and aging -- equate to less than 2 LSB of a 16-bit system. Total harmonic distortion with a 1 kHz 20Vpp input signal is an outstanding 0.002%.
The LS-100 comes in a portable format (shown in the picture above) which only holds 10 channels, the LS-101 comes in a 19 inch rack mount format, which holds 21 channels.
More on the GSAF-10 Modules
A feedback topology at the output stage provides for a 10 m ohm output impedance, making the GSAF-10 capable of driving any A/D converter input stage without further buffering.
Pre-installed offset trimming and output-gain scaling potentiometers permit nulling of offset and gain for expansion of dynamic range for maximum resolution.
GSAF-10 Module Specifications
Filter Characteristics Response type 9-pole low-pass, Butterworth or Bessel (Chebyshev optional) Cutoff frequency tolerance ±2% Corner frequencies* 100 Hz, 200 Hz, 500Hz, 1.0 kHz, 2.0 kHz, 5.0 kHz, 10.0 kHz, 20.0 kHz, and 50 kHz Total harmonic distortion 20vpp; 1 kHz </= .002%, 10 kHz </= .008% Analog Input Voltage range ±10V Differential gain 1 ± .001dB Common-mode rejection (@ 1kHz) 92 dB min, 96 dB typ Common-mode voltage range ±40V Impedance 15 kOhms ±2% Maximum safe voltage ±40V Analog Output Impedance 5 mOhms typ, 10 mOhms max Linear operating range ±10V @ ±2mA Offset voltage ±300 µV Noise (5 Hz to 50 kHz) 25 µVrms typ, 30 µVrms max Load Capacitance 100pF max Environmental Operating temperature 0°C to 50°C Storage temperature -20°C to +70°C Relative humidity (non-condensing) 0% to 95% @ 60°C
* Custom frequencies are available.
Application Versatility
The LS-100 is available with any mix GSAF-10 Gold Series modules. Simply specify the filter type and cutoff frequency for each module location.
Custom filters, amplifiers or other special functions can be provided. Contact the factory for custom requirements.
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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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