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Preamplifiers
Detect and strengthen a signal prior to greater amplification.
See Also: Amplifiers, RF Amplifiers, Current Amplifiers, Audio Amplifiers, Voltage Amplifiers, Transconductance Amplifiers, Op Amps, Klystron, Instrumentation Amplifiers, Distribution Amplifiers
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Preamplifiers
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The primary function of a preamplifier is to extract the signal from the detector without significantly degrading the intrinsic signal-to noise ratio. Three basic types of preamplifiers are available: the current-sensitive preamplifier, the parasitic-capacitance preamplifier, and the charge-sensitive preamplifier. ORTEC manufactures a preamplifier to fit your detector, your application, and your budget.
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Preamplifiers
AH-series
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A broad mix of in-line preamplifiers and accessories are offered to enhance hydrophone measurements by increasing the gain, preserving the flatness response, extending the dynamic range, and minimizing reflections.
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Preamplifiers
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Is an electronic amplifier that converts a weak electrical signal into an output signal strong enough to be noise-tolerant and strong enough for further processing, or for sending to a power amplifier and a loudspeaker.
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Preamplifiers
LNA Series
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Low noise amplifier with 12.5 dB of gain covering the nominal frequency range 1 MHz to 3 GHz and can be used in the range from 200 kHz to 4 GHz. With its high gain and low noise figure, it will significantly increase the sensitivity of virtually all spectrum analyzers and other RF measuring instruments. All measuring instruments have a 'noise figure', which is a measure of how good the instrument is at measuring low level signals, the lower this figure, the better, although the lowest signal level will still be governed by the measurement bandwidth. A typical spectrum analyzer may have a noise figure of 20 dB or more, whereas a typical receiver may have a noise figure of 10 dB. The preamplifier has a noise figure of typically 4 dB, significantly enhancing the low level performance of such instruments, enabling signals that were previously masked by noise to be seen.
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Active Input Module for Teledyne RESON TC4014 and TC4032, Hydrophones with Built-In Preamplifiers
EC6076
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The EC6076 Active Input module is for the Teledyne RESON TC4014 and TC4032 hydrophones with built-in pre-amplifiers.EC6076 provides an easy interface to the hydrophones, it al-lows use of the differential output from the hydrophones ei-ther via direct feedthrough of the signal on an XLR output con-nector or via the built-in differential amplifier that converts the differential hydrophone signal into a single-ended +6dB signal on a BNC/coax out. EC6076 has a built-in rechargeable battery that provides power for the EC6076 differential amplifier and the TC4000 hydrophone.
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Low Noise Differential Preamplifiers
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Provide a high gain amplification to 1MHz with an AC output derived from a very low noise FET instrumentation amplifier. Each model has fixed gain settings of x1 (0dB), x10 (20dB), x100 (40dB) and x1000 (60dB) over a selectable bandwidths of 100Hz, 1kHz (HP), 3kHz, 30kHz, 100kHz and 1MHz (7000 model only). Noise referred to input is 7nV√Hz and common mode rejection is >100dB at 1kHz. Momentary pushbutton switches are provided that control coupling, bandwidth, gain and channel on/off selections. BNC connectors are provided for single-ended and differential input, ac output, and dc output (optional) connections.
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Microphones/Preamplifiers
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To apply gain to (amplify) the signal without changing how the signal sounds.
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Externally Polarized Precision Condenser Microphones & Preamplifiers
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Externally polarized microphones set the initial standard for all acoustic test and measurement applications. They rely on a dedicated 200V power supply and specialized cables with 7-pin LEMO® connectors. Their straightforward design supports a wide product range. Often chosen as replacements for existing models or when prepolarized alternatives are unavailable.
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Microwave Wideband High-power input type PIN Receivers
MR30 (30KHz~100GHz)
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Hangzhou Huatai Optic Tech. Co., Ltd.
MR30 series microwave wideband optical receiver, adopts waveguide intergrated PIN photodetector. Within 40KHz~100GHz bandwidth, they are featured with excellent linearity, high responsibility and superior flatness of the RF response in both, power and phase. They provide an outstanding linearity fiber optical communication for analogue and digital wideband microwave application. MR30 series PIN photodetector products have unsurpassed high-power handing capability. In system application, they can pre-amplify the received optical power by EDFA, favorable responsibility, with high voltage out, avoiding the need for electrical amplification. They are suitable for testing and application in microwave opto-electronics and high speed lightwave area as well as 40Gb/s (OC-768, STM-256) high-speed communication system.
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Preamplifier, 100 MHz to 18 GHz
87405C
Amplifier
Exceptional gain (25 dB) and flatness (1.5 dB) combined with a probe-power bias connection which eliminates the need for an additional DC power supply, makes these preamplifiers the ideal choice for spectrum analyzer or stand alone applications.
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Modular Pulse Processing Electronics
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CAEN provides a complete and ever increasing set of instrumentation, from Preamplifiers to Data Acquisition to Triggering Electronics and Logic Functions. Most of the instrumentation is available in the most popular standard form factors and bus protocols, such as VME, NIM, CAMAC and Desktop.The Desktop is the stand alone form factor of the CAEN products. It provides the same performances of the other form factors and take the advantage of an easier and portable use, requiring no crates.
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Transducers
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Is a unit which comprises a preamplifier fed by a constant current ICP and a condenser microphone
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Preamplifier, 10 MHz to 4 GHz
87405B
Amplifier
Preamplifiers and System Noise Figure Application Note This note discusses noise figure basics including applications and characteristics of Keysight simplifier technology. Highlighted are Keysight's 87405C portable preamplifiers that provide an exceptional gain of 25 dB up to 18 GHz and a probe-power bias connection which eliminates the need for an additional DC power supply. Read the Preamplifiers and System Noise Figure Application Note now!
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(40×70×12mm) Single Channel Small Form Factor Gain Block Pre-Amplifier EDFA Module
SPA4300-GM01
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Hangzhou Huatai Optic Tech. Co., Ltd.
SPA4300-GM01 is a single channel Gain Block Pre-Amplifier EDFA module , adopts subminiature 40×70×12mm compact package, combined with artistic package and best optic performance, creating the best flexible and variable low-cost amplifier in the market. This module is suitable for multiple network application, especially the application that requires 40GB/S transmission speed.
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Low Noise Current Preamplifier
SR570
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Stanford Research Systems, Inc.
The SR570 is a low-noise current preamplifier capable of current gains as large as 1 pA/V. High gain and bandwidth, low noise, and many convenient features make the SR570 ideal for a variety of photonic, low temperature and other measurements.
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Active Loop Antenna
AL-130R
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Also known as Magnetic Loop Antenna, the AL-130R is compliant with CISPR 16-1-4. It is ideal for emissions measurements as required by various EMC standards such as FCC 18, CISPR 11, CISPR 13, CISPR 14, CISPR 32 and many more. The built-in, low-noise preamplifier, increases overall measurement sensitivity as well as the overall signal to noise ratio. As per ANSI C63.4-2014, the use of active loop antenna for compliance testing is permitted in a non-sheilded environment ONLY if the saturation indicator is continuously monitored during the course of testing. Com-Power’s Remote Antenna Interface (RAI-100) comes in very handy for this application. It is a compact controller which can be used to enable/ disable RF measurement circuit and monitor saturation and battery low conditions remotely via a fiber optic cable up to 30 mtrs in length.
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Noise Figure Analyzer, Multi-touch, 10 MHz to 7 GHz
N8974B
Low-Frequency Noise Analyzer
The N8974B high performance noise figure analyzer is designed to make fast, accurate and repeatable noise figure measurements. When paired with an SNS Series noise source and U7227 Series USB preamplifier the ENR data from the SNS and USB preamplifier data automatically downloads into the N8974B.
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Digital Multi Channel Analyzer
DT5770
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The DT5770 is a compact portable 16k Digital MCA for Gamma Spectroscopy, integrating analog front-end with programmable gain and possible AC coupling. It is ideally suited for high energy resolution semiconductor detectors, like HPGe and Silicon, connected to a Charge Sensitive Preamplifier (CSP). The unit can also properly operate directly connected to a PMT with inorganic scintillators (e.g. Nal or Csl scintillators), provided exponential pulse shape and decay time above 200 ns.
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MCT IR Detector Module
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The MCT (Mercury-Cadmium-Telluride) IR (infrared) Detector Module is a thermoelectrically cooled detector element and preamplifier package optimized for acquiring spectral data with the LaserTune Quantum Cascade Laser (QCL) source.
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Mini Receiver
FB7-NX
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In about 1935, the National Radio Company of Malden, Mass., brought out a “hot” high frequency receiver, called the FB7, and the subsequent FB-7X. It featured a super-hetrodyne design with plug-in coils that gave it a broad frequency range. The “X” model also incorporated a crystal filter in the intermediate frequency section, thus giving it additional selectivity. The receiver was viewed by radio amateurs as a technological breakthrough, and it was also used commercially for point to point high frequency communications. As the receiver did not have an internal RF amplifier section, a separately tunable RF amplifier was later provided in a separate enclosure for additional performance capabilities. Now, National RF, Inc., is resurrecting the fabled receiver name with an all solid-state, hot mini receiver, which also utilizes plug-in coils to cover the HF spectrum. The mini-receiver is designed for use by radio amateurs as well as serious short-wave listeners, and allows reception of AM, CW, and SSB signals. It incorporates a super-hetrodyne design with a dual gate FET built-in RF preamplifier and a ceramic filter for selectivity, often required when used in a crowded amateur radio band. In addition, the receiver has a buffered rear panel output of the high frequency oscillator for use with either a frequency counter for exact receive frequency display, or for interface with an outboard transmitter. A rear panel jack is also provided for muting the receiver when a transmitter is placed into the transmit mode. And, the receiver is small enough to fit into carry-on luggage and taken on trips when it is desired to “keep an ear” on amateur radio or other high frequency activity. The receiver utilizes rear panel plug-in coil assemblies which contain the RF amplifier, mixer, and oscillator tuned circuits. Each plug-in coil assembly also comes with a separate dial scale, which is inserted onto the front panel for displaying the tuned frequency. A very smooth 6 to 1 planetary drive is used for tuning the receiver. Other front panel controls include RF preamplifier peak, volume control, Beat Frequency Oscillator adjustment, and RF gain control. Other switches include filter bandwidth, AM/CW/SSB selection, Power, and a general coverage/band spread control for certain plug-in assemblies. The receiver is intended to drive head-phones via a rear panel jack, but has sufficient output to drive a small external speaker.
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Measurement Microphones
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The microphone bodies contain the preamplifier. They combine high dynamic range and wide frequency range with low noise. These measurement microphones connect via the ASD Cable to the XL2 Audio and Acoustic Analyzer, e.g. for measurements at remote locations or to reduce acoustic reflections.
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Amplifiers
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Becker Nachrichtentechnik GmbH
Becker Nachrichtentechnik GmbH offers a large portfolio of high performance broadband RF amplifiers. Optimized for linearity, high dynamic range and low noise, they cover all widely used radio standards like cellular, satellite radio, TETRA/BOS, GNSS, GPS, 802.11, including the new bands for LTE-U. They amplify wideband radio signals from shortwave over UHF, VHF up to 18 GHz in 50 Ohm technology (I-band, G-band, P-band, L-band, S-band, C-band and X-band). They are used as compact RF drivers, antenna pre-amplifiers or RF boosters in a variety of applications ranging from tunnel radio coverage extension, over airspace radio monitoring to in-ear monitoring and can also be offered as 1U 19” rack variants. Due to their advanced design, the power consumption is significant lower than typical industry alternatives, saving cost at customers with respect to cooling.
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Current Sensors
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Our current sensors were designed for a simple, customer-specific construction of niobium wire wound magnetometers, gradiometers or preamplifiers for small current or voltage signals.
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Digital MCA Tube Base For Gamma-Ray Spectroscopy
Gamma Stream Family
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CAEN Gamma stream is a compact and portable system for gamma ray spectroscopy with scintillation detectors, which provides an active Multi-Channel Analyzer (MCA) integrated in a 14-pin photo-multiplier tube (PMT) base. Gamma stream fully integrates in a stand-alone device the high voltage to bias the PMT, the preamplifier to shape the signal from detector, and the MCA for a complete Pulse Height Analysis online.
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Pre-Amplifiers
MPR, MDA series
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MPR, MDR series provides low noise, high gain and wideband to improve dynamic range for emission testing. We also offer customized model for variable requirments.. Example 30M-1000MHz with band-pass filter Amprifier unit for connecting antenna directly
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Accelerometer (Charge Output Type)
NP-2000 Series
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This sensor converts mechanical vibrations into electric signals in proportion of vibration acceleration.You can choose the one that is ideal for your purpose,conditions,applications etc. from wide variety of selection.Charge amplifier is necessary because it is a charge output type,however, compared to pre-amplifier built-in type, it can be used at higher temperature in general.
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High Impedance Preamplifier
1671
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The Model 1671 is a single ended low noise field effect transistor
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DryLoc pH/ORP Preamplifier and Connectors
2760
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The 2760 preamplifier allows any DryLoc pH/ORP electrode to work with Signet ProcessPro and ProPoint pH/ORP instruments. It is also sold as a simple connector for use with other manufacturers' instruments that do not require a preamplified signal.
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SparkFun Electret Microphone Breakout
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This small breakout board couples an Electret microphone (100Hz--10kHz) with a 60x mic preamplifier to amplify the sounds of voice, claps, door knocks or any sounds loud enough to be picked up by a microcontroller’s analog-to-digital converter. Each breakout comes fully assembled and works from 2.7V up to 5.5V.
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PXIe-5668, Up to 26.5 GHz PXI Vector Signal Analyzer
783124-03
Signal Module
Up to 26.5 GHz PXI Vector Signal Analyzer - The PXIe‑5668 offers wide bandwidth with high-performance measurement performance and speed. It meets the challenging requirements of applications such as wireless communications, radio frequency integrated circuit characterization, RADAR test, and spectrum monitoring and signal intelligence. With its implementation as a PXI instrument, the PXIe‑5668 also features the fast measurement speed required for high-volume manufacturing test, and multi-instrument synchronization capabilities for phase-coherent MIMO test. You can use the optionally included PXIe-5698 preamplifier to improve dynamic range and sensitivity near the instrument noise floor.
