Low Pass Filters
Refine signal, allowing the transmission of signal below a specific corner frequency, while attenuating the frequencies above.
See Also: Filters, Filter / Amplifiers, EMI Filters, Programmable Filters
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"Standard" RF Low Pass Filters
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Coaxial Dynamics "Standard" line of RF Low Pass Filters offers several models to choose from at CW power ratings of 100 watts and 200 watts. These filters cover operating frequencies from 88 MHz to 400 MHz with less than 0.5 dB insertion loss and attenuation levels of 40, 50 and 60 dB.
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Low-Pass Filters
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Low-Pass Filters from Analog Devices are specifically designed to reject higher frequency noise and unwanted signals while allowing desired signals to pass through. Analog Devices offers an extensive line of continuous time and clock tunable (switched capacitor) devices preconfigured for low-pass filtering. These integrated low pass filters feature a wide range of cutoff frequencies and response characteristics.
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Low-Pass Filters
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Is a filter that passes signals with a frequency lower than a selected cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency. The exact frequency response of the filter depends on the filter design.
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Low Voltage DC / Battery Powered HV Amplifiers
WMA-02 And WMA-02LF
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The Falco Systems WMA-02 is a high voltage amplifier that runs from an 24 - 30V DC power supply and can be battery powered if required, e.g. for use in a Faraday cage. Its internal high voltage generator is inductor-free and hence does not spread magnetic interference in sensitive experimental setups. The output noise is impressively low at 4mVrms. For extremely low noise applications where bandwidth is not an issue, a dedicated WMA-02LF version is available that contains an output low pass filter capacitor which reduces the bandwidth to 50Hz, but makes the noise drop to below 0.2mVrms. This bandwidth-limited amplifier is ideal for MEMS or piezo positioning with manual voltage adjustment.
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Product
Active Filter
J2190A
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The J2190A active filter presents a high impedance (approximately 150kOhms) minimizing the loading of the circuit being tested. The output impedance is 50 Ohms allowing low noise coaxial connections to all typical test equipment. The 0.1Hz-10Hz noise band is common for opamp measurements, voltage regulators and voltage references. Many application notes offer schematics of such a filter for test purposes. An engineer’s time is much too valuable to be spent building test equipment. We have created a 4th order high pass and 4th order low pass filter with an optimally flat response and 0dB gain. Additional filters can be cascaded for even sharper cutoff.
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Precision Analog Anti-Alias Low-Pass Filter Board
GSAF-10
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The GSAF-10 Gold Series are analog low-pass filter boards that offer the performance required to maintain the maximum accuracy of high-precision 16- and 18-bit A/D converters.
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ACDC
ES Series
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The ES Series of line operated power supplies features near constant efficiency over theentire rated input voltage range. These electrically identical families employ a highly efficient, closed loop ripple regulation circuit, which contains a low pass filter. Each stage, transformer, filter and regulator is engineered for maximum efficiency.
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8-Channel Amplifier and Low-Pass Filter Module
SCS-816
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The SCS-816 and SCS-817 amplifier/filter module provides eight 8-pole low-pass filters that can be individually configured for a cutoff-frequency from 0.5Hz to 70kHz(SCS-816) and 0.5Hz to 60kHz(SCS-817). Each of the SCS-816/SCS-817's eight channels features an instrumentation amplifier with software-selectable gains of 1 to 1000 in 1-2-5 steps.
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2- to 8-Channel Anti-Alias Low-Pass Filter and Instrumentation Amplifier Card
AAF-3
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The AAF-3 is a 2- to 8-channel anti-alias low-pass filter and instrumentation amplifier ISA bus plug-in board for front-end signal conditioning in PC-based data acquisition systems.
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PCI Daughter Boards
DB-1825/2 (Daughter Board for PCI-1202/1602/1802/822/826 )
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Screw terminal board using 37 pin cable I/O ports for PCI-1202/1602/1802/822/826 series , (32 channel single-ended ,16 channel differential)Blank pads for break detection, Low-pass filter , current shut and voltage divider (manual soldering)Dimensions :170 mm x 114 mm
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Precision Dual-Channel Compact Filter/Amplifier System
PFA-2
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he PFA-2 is a compact, rugged, and versatile dual-channel precision filter/amplifier. The low-noise, high common-mode rejection balanced differential input with programmable AC/DC input coupling is ideal for conditioning static or dynamic signal inputs. Sharp, programmable 6-pole low-pass precision filters support two response characteristics which are optimized for making time-domain or frequency-domain measurements.
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Frequency Counters
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-Frequency Range : 0.2Hz to 5.5GHz Built-in CMOS Gate Array Fast, High-Resolution, 10 Digits Green LED Display Microprocessor Controlled Reciprocal Technique for Low Frequency Resolution Self Diagnosis Routine Total, RPM Function, Period Low Pass Filter(100KHz, -3dB) Rs-232c Interface(Option)
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Programmable, 2-Channel Low-Pass Filter Module
AAF-3F
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Programmable, 2-Channel Low-Pass Filter Module. The AAF-3F is designed for use with the AAF-3M and AAF-3PCI filter boards.
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Dual Voltage Buffer with Current Drive
BUF-01
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The BUF-01 Voltage Buffer is a dual channel buffer capable of driving up to 50 mA of current on each channel at up to ±10 V output. The buffer has a 2nd order low pass filter with 3 dB point of 119 kHz to remove high frequency noise. The unit’s differential inputs are built to withstand high DC over-voltages up to ±50 VDC and greater than ±100 V transients. Gain of the unit is 1 allowing for minimal insertion issues.
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Industrial Clamp Meters
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*Measures AC+DC current*AC and AC+DC voltage measurements with digital low pass filter for accurate readings on variable frequency drives*Also measures DC voltage, resistance, capacitance and frequency*Tests continuity and diodes*Flashlight inside clamp jaw for easier work in dark locations*Backlight & relative mode for added versatility*Peak-RMS measures motor inrush current*AmpTip™ increases accuracy on small wires and low current*Two voltage detection modes - non-contact or using a single test lead*Data hold*Recording of Maximum, Minimum, and Average readings*Crest (peak hold) feature captures current or voltage peaks as short as 5 milliseconds
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16-Channel Anti-Alias Low-Pass Filter Card
AAF-16
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The AAF-16 is a 16-channel anti-alias low-pass filter card series for front-end signal conditioning in PC-based data acquisition systems.
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Low Voltage DC / Battery Powered High Voltage Amplifiers
WMA-005 And WMA-005LF
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The Falco Systems WMA-005 is a high voltage amplifier that runs from an 24 - 30V DC power supply and can be battery powered if required, e.g. for use in a Faraday cage. Its internal high voltage generator is inductor-free and hence does not spread magnetic interference in sensitive experimental setups. The output noise is impressively low at 3mVrms. For extremely low noise applications where bandwidth is not an issue, a dedicated WMA-005LF version is available that contains an output low pass filter capacitor which reduces the bandwidth to 50Hz, but makes the noise drop to below 0.1mVrms. This bandwidth-limited amplifier is ideal for MEMS or piezo positioning with manual voltage adjustment.
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ACDC
EA Series
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The EA Series of line operated power supplies features near constant efficiency over theentire rated input voltage range. These electrically identical families employ a highly efficient, closed loop ripple regulation circuit, which contains a low pass filter. Each stage, transformer, filter and regulator is engineered for maximum efficiency.
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Lowpass / Bandpass / Highpass Filter
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Corech Microwav’s RF Filers frequency ranges from dc to 67 GHz, band pass/high pass/low pass designs, narrow-band/wide-band types to meet customers various needs. These low pass filters(LPF), high pass filters (HPF), and band pass filters (BPF) offer very low insertion loss, outstanding VSWR and long-term performance.
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Dual Adjustable Lowpass Filter
LTC6603
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The LTC6603 is a dual, matched, programmable lowpass filter for communications receivers and transmitters. The selectivity of the LTC6603, combined with its linear phase, phase matching and dynamic range, make it suitable for filtering in many communications systems. With 1.5° phase matching between channels, the LTC6603 can be used in applications requiring pairs of matched filters, such as transceiver I and Q channels. Furthermore, the differential inputs and outputs provide a simple interface for most communications systems.
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Dual Channel Multi-Band FM Tracking/Data Receiver In Modular Style Housing
LS-27-B
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The Lumistar LS-27-B Modular Dual Channel Tri-Band Tracking and Data Receiver is Lumistar’s third generation of modular high performance FM Receivers. This wideband designs supports one or two independent channels of PCM with data rates up to 20Mbps. The unit includes both an optional FM demodulated output for PCM data, and standard programmable AM/linear AGC outputs for auto-tracking receivers. The design offers 8 IF Bandwidths and 8 Video Filters per channel for each receiver.AC coupling with a low pass filter is employed to ensure a high quality data link with long strings of NRZ-L ones or zeroes. The unit provides a software selectable 10 MHz reference I/O port forlocking local oscillators to a high precision external source or to arrange multiple units in a master/slave arrangement. The receiver’s control and status is achieved via Ethernet, USB or auto-switched RS-232 (or “4-wire” RS-485 in place of 232). When utilizing the RS-422 interface, multi-drop configurations can be accommodated.
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Loggers/PQA
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Kyoritsu Electrical Instruments Works, Ltd.
Large capacity for storing 60,000 data points Lowpass Filter will filter out the harmonics LED flickers when the preset current/voltage value is exceeded CALL:Confirmation of recorded data Selection of One-time mode or Endless mode Non Volatile Memory Battery power indicator The userfriendly PC software "KEW LOG Soft 2" is supplied Continuous measuring time:Approx. 10 days (Alkaline Battery)
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Programmable Anti-Alias Low-Pass Filter and Instrumentation Amplifier
USBPGF-S1
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Single Channel USB Programmable Anti-Alias Low-Pass Filter and Instrumentation Amplifier for Signal Conditioning in Data Acquisition Systems. Differential or single ended input. 10Vmax Signal Input and Output with input protection up to 40V. Software-programmable instrumentation amplifier gains of 1 to 1000.
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ACDC
EC Series
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The EC Series of line operated power supplies features near constant efficiency over theentire rated input voltage range. These electrically identical families employ a highly efficient, closed loop ripple regulation circuit, which contains a low pass filter. Each stage, transformer, filter and regulator is engineered for maximum efficiency.
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2 to 8 Channel Anti-Alias Low-Pass Filter Card
AAF-1
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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.
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Low Pass and Bandpass SMA Coaxial Filters
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Fairview Microwave’s bandpass filters were developed for use in various applications including GPS, ISM, RFID and Wi-Fi systems and operate in several bands, some as low as 824 MHz and some as high as 5.875 GHz. Fairview’s low pass filters allow for tailoring of a test setup for a specific application and support upper band edges of 100, 225, 400, 1000, 2000 and 3000 MHz. All of these bandpass filters and low pass filters feature female SMA connectors.
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2- to 8-Channel Anti-Alias Low-Pass Filter and Instrumentation Amplifier Card
AAF-3PCI
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The AAF-3PCI is a 2- to 8-channel anti-alias low-pass filter and instrumentation amplifier PCI bus plug-in board for front-end signal conditioning in PC-based data acquisition systems.
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Lowpass Filters
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K&L Microwave provides lowpass filters in multiple topologies built to customers' electrical, mechanical, and environmental specifications. The list below contains part numbers meeting existing industry and customer specifications, as well as product families. Use the quote cart to request a quote on a specific design.
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12V based Power supply for PC104 and PC104p stacks
PC104pPWR12
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The PC104pPWR12 power supply provides for the +5, +3.3, +12, minus 12 and minus 5 from a 12V wall mount transformer supply, battery etc. Each rail is fuse protected. The supply uses switching technology to provide high efficiency coupled with low pass filtering to provide low noise and fast response to transient loads
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Low Power Analog to Digital
7430
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Smart A/D for thermocouples, thermistors, RTD's, strain and pressure gauges8-channels of 16-bit A/D resolutionEliminates trimpot adjustments by using software calibrationPerforms concurrent 32-bit floating point operations to minimize host computer loadingEach channel is software programmable for sensor type, gain, low-pass filtering, scan rate
