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Preamplifiers

LNA Series

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Teseq AG

LNA Series - Teseq AG

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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Preamplifiers

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A.H. Systems, Inc.

A.H. Systems, Inc.

A.H. Systems'' Preamplifier line is an excellent choice with a rugged design, no hassles with soldering your own power leads and they improve overall system sensitivity by at least 20 dB. All of A.H. Systems'' Preamplifiers come with a 12-volt (or 15-volt) DC regulated power source. A low voltage indicator confidently allows you to power the amplifier with your own external 12-volt DC battery. This makes it a convenient choice for field measurements. See table below for amplifier specifications.

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Externally Polarized Precision Condenser Microphones & Preamplifiers

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PCB Piezotronics, Inc.

PCB Piezotronics, Inc.

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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Low Noise Differential Preamplifiers

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Krohn-Hite Corporation

Krohn-Hite Corporation

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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Preamplifiers

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ORTEC

ORTEC

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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BJT Voltage Preamplifier

SIM911

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Stanford Research Systems, Inc.

SIM911 - Stanford Research Systems, Inc.

The SIM910 and SIM911 are low-noise, programmable preamplifiers which are ideal for a wide range of small signal applications. The primary differences between the two models are their input impedance and input noise. 

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Current Preamplifier

1212

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DL Instruments, LLC

1212 - DL Instruments, LLC

The Model 1212 Current Preamplifier is designed as a low cost, gerenal purpose, benchtop instrument to provide a high performance detection system for small ac and dc currents. The 1212 operates with a virtual ground at its input which mitigates unpredictable high frequency rolloff due to input cables and stray capacitance.

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Preamplifiers

AH-series

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Onda Corp.

AH-series - Onda Corp.

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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(100×130×19mm) C-Band DWDM Pre-Amplifier EDFA Module

WPA4300-FM04

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Hangzhou Huatai Optic Tech. Co., Ltd.

WPA4300-FM04 - Hangzhou Huatai Optic Tech. Co., Ltd.

Huatai WPA4300-FM04 series with 100 × 130 × 19mm Compact package, is a digital control circuit with DWDM full function preamplifier module. Products using the most excellent optical performance, the most advanced electronic control technology and comprehensive software features, has a wide operating wavelength range, low noise, excellent gain flatness characteristics and transient characteristics. Suitable for C-Band 44 or 88 wave wave DWDM system applications.

Product

Mini Receiver

FB7-NX

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National RF, Inc

FB7-NX - National RF, Inc

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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Low Cost Microwave Wideband PIN Preamp Receivers

MR21 (40KHz~18GHz)

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Hangzhou Huatai Optic Tech. Co., Ltd.

MR21 (40KHz~18GHz) - Hangzhou Huatai Optic Tech. Co., Ltd.

MR21 series microwave wideband optical receiver, adopts High linear PIN diode and Low noise pre-amplifier IC, within bandwidth of 40KHz~18GHz, 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 wideband microwave application. Due to avoidance of using expensive coaxial cable or wave guide, there will be no limitation in transmission distance, which improves the signal quality and reliability of the microwave communication. They can be widely applied in microwave communication system such as remote wireless, timing and reference signal distribution, telemetry, measurement and delay line etc as well as 10Gb/s and 18Gb/s high speed communication system.

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Electronic Instruments

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ORTEC

ORTEC

The ORTEC range of modular electronics includes instruments in NIM formats as well as other modular instruments, such as photomultiplier bases, preamplifiers and other accessories. ORTEC also offers modular instruments for pulse height spectroscopy, fast timing, counting, high voltage power supplies and other special functions.

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Lock-In Voltage Preamplifier

SR552

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Stanford Research Systems, Inc.

SR552 - Stanford Research Systems, Inc.

The SR552 Voltage Preamplifier is designed to work with SRS lock-in amplifiers, providing gain where it is needed most?right at the experiment. The preamplifier minimizes noise and pickup in the connecting lines and can reduce measurement time in noise-limited experiments. 

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XRF Systems

OEM Solutions

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Amptek Inc.

OEM Solutions - Amptek Inc.

Amptek offers a complete line of OEM detectors, preamplifiers, digital processors, and power supplies, and can work with you to help develop custom solutions unique to your needs. We provide established and emerging OEM customers a fast track to the market with our modular systems that will meet current needs, while being flexible enough to adapt to your product roadmap. The below options are typical configurations. Please contact us for custom solutions.

Product

Precision Condenser Microphone

378A12

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PCB Piezotronics, Inc.

378A12 - PCB Piezotronics, Inc.

1/4-inch pressure prepolarized 377A12 microphone, with 1/4-inch preamplifier 426B03 and TEDS v0.9

Product

RX Pre-Amplifier System

RAM-34

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Array Solutions

RAM-34 - Array Solutions

The RAM-34 is a complete pre-amplifier system designed primarily for the low bands 160M thru 40M. It has inputs for four receive antennas and internal 3-pole bandpass filters for 160M, 80M and 40M. In addition to the pre-amplifier, it has a step attenuator that togetherwith the amplifier stage provides gains from -20 dB to +20 dB in 5 dB steps. This allows equalizing the signal levels between the antenna inputs. Gain settings are memorized for each antenna on each band. Different types of receive antennas have different signal levels and the gain memories eliminate the need to adjust the receiver or pre-amplifier when switching between the antennas.

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Low Noise Preamplifier

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The Phased Array Company

The Phased Array Company

The UPL-3001 preamplifier is a high performance solution for the low-noise amplification of ultrasonic signals. Designed for signals ranging from 0.5 to 300 MHz, the small and lightweight, rugged unit is perfect for remote applications. This is ideal for P&C, TT, AUT or TOFD inspection.

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External Pre-amplifiers

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Spectrum Instrumentation

Spectrum Instrumentation

Although all Spectrum A/D cards have a very powerful input section with a highly configurable input amplifier and a variety of input ranges it is sometimes necessary to have additional external amplifiers if the signal to acquire has an extremely low level. Spectrum offers a range of perfectly matching external amplifiers to cover such cases. These powerful amplifiers have been rated using the Spectrum cards and offer best performance together with high amplification rates.The amplifiers are simply connected between the signal source and the Spectrum A/D card input and can be manually switched between different settings using small lever keys. All amplifiers allow the offset compensation by using an adjustable screw.

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Accelerometer with Built-In Preamplifier

NP-3000 series

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Ono Sokki

NP-3000 series - Ono Sokki

This sensor converts mechanical vibrations into electric signals in proportion of vibration acceleration."The NP-3000 series offers ultra-small masses of 0.4g, tri-axial type which can obtain vibration directions of XYZ at once, waterproof, high sensitive type, and so on. You can choose the most suitable detector according to the purpose of use, operation conditions, and applications. Since the preamplifier is built in the detector main body of the NP-3000 series, sensor signal input part can be made relatively inexpensively and it can be directly connected to analysis equipment such as our FFT analyzer."

Product

High-Sensitivity Tri-Axial Accelerometer with Built-In Preamplifier

NP-7310

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Ono Sokki

NP-7310 - Ono Sokki

NP-7310 is the accelerometer with built-in preamplifier, and capable of tri–axial directions simultaneous measurement. It is suitable for the low frequency vibration measurement such as ground vibration or floor vibration while operating the machine. NP-7310 can be used with the sensor amplifier unit such as AU-2100, AU-2300 or PS-1300. Also, it is possible to input directly to the analyzer or recorder which the constant current amplifier is built-in such as the FFT Analyzer of DS-2000 series, DS-3000 series, CF-7200A, CF-9000 series or CF-3650/3850 series.

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Ultra Low Noise Preamp

J2180A

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PICOTEST Corp.

J2180A - PICOTEST Corp.

The J2180A low noise preamplifier provides a fixed, AC coupled 20dB gain while converting a 1 MOhm input impedance to a 50 Ohm output impedance. With a 3dB bandwidth of 0.1Hz to 100MHz, the preamplifier improves the sensitivity of oscilloscopes, network analyzers and spectrum analyzers while reducing the effective noise floor and spurious response. The preamplifier can also serve as a low frequency DC blocker for a spectrum analyzer or you can use it to connect a high input impedance oscilloscope probe to 50 Ohm equipment.

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Active Input Module for Teledyne RESON TC4014 and TC4032, Hydrophones with Built-In Preamplifiers

EC6076

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Teledyne Marine RESON B.V.

EC6076 - Teledyne Marine RESON B.V.

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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Perseus SDR HF Receiver

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Hoka Electronic B.V.

Hoka Electronic B.V.

PERSEUS is a VLF-LF-HF receiver made by Microtelecom is based on a outstanding direct sampling digital architecture. It features a 14 bit 80 Ms/s analog-to-digital converter with an exceptional 76 dB SNR (BW = 40 MHz), an high-performance configurable FPGA digital down-converter with an up to 1 MS/s output sampling rate and a 480 MBit/s, high-speed USB 2.0 PC interface. Unlike in lower class direct sampling receivers, the PERSEUS RF analog front-end has been carefully designed for the most demanding users and includes a 0-30 dB, 10 dB steps attenuator, a low-loss 10 bands pass-band RF preselector filters bank, and an high dynamic preamplifier with a top-class input third-order Intercept Point of more than 30 dBm. The resulting third-order dynamic range is 103 dB for SSB signals (2.4 KHz BW) and 107 dB for CW signals (500 Hz BW).

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Saluki SE4002 FET Input Preamplifier

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Saluki Technology Inc.

Saluki Technology Inc.

The SE4002 is a low-noise, ultra-high input impedance preamplifier with excellent common-mode rejection. It is designed to work with any Saluki digital lock-in amplifier. The preamplifier minimizes noise and pickup in the connecting lines and reduces measurement time in noise-limited experiments.