Product

Low Input Bias Current Amplifiers (<100 pA)

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Analog Devices Inc.

Analog Devices Inc.

Low input bias current op amps are required whenever the difference of currents or voltage is small and needs to be measured accurately. These op amps are used so that the signal is not loaded down by the input of the op amps. Low input bias current op amps are critical for interfacing sensors in applications from photodiodes, pH meters, or other electrometer related functions to downstream electronics. Analog Devices has many precision op amps that fit the definition and range of these applications.

Product

Four Channel Low-Noise DC Bias Card

PI-41702

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Pulse Instruments

PI-41702 - Pulse Instruments

The PI-41702 is a four channel bipolar DC Bias supply that can provide an output current up to 100 mA per channel. The output voltage ranges from –8 V to +8 V, and this card has special filter circuitry to reduce the output noise for those applications that require a low noise bias output. Additionally there is a ‘D’ type connector that allows the introduction of laboratory type supplies to reduce the noise further. To change from using the internal power supplies to external power supplies requires repositioning jumpers. The PI-41702 also has voltage and current sense for remote measurement of the voltage and current levels.

Product

DC Current Bias Supply

DC1000A

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Voltech

DC1000A - Voltech

To guarantee the quality and performance of inductive components such as inductors, chokes and transformers they are tested at their real-life operating point. If the inductor is designed to carry a DC current, then its inductance must be measured with that DC current present. Until now, these measurements were made by an LCR meter connected via special interfacing to a DC bias supply available only from the manufacturer of the LCR meter. The unique NEW DC1000A can be used with any precision LCR meter and connects simply into existing test fixturing.

Product

DC Bias Current Power Supply

TH1775

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Shenzhen Chuangxin Instruments Co., Ltd.

TH1775 - Shenzhen Chuangxin Instruments Co., Ltd.

TH1775 is a DC Bias Current Source (or DC Magnetization Current Source) used for inductance measurement of inductors and transformer windings with DC bias current. Except for constant current output, low additional error and wide frequency response range are important for bias current inductance measurement. High frequency LCR meter could be used, when the frequency response range is wide enough. MPU controlled auto current balance technology is adopted to realize AC+DC current overlap and constant current output from 0 to ±20A. Two TH1775 can be paralleled to supply a maximum current up to 40A.TH1775 permits high frequency measurement up to 1 MHz and can be directly controlled by TH2816A, TH2817A, TH2818 and TH2819. TH1773/TH1775 with its low additional error, wide frequency response range and sweep output function is widely used in DC biased inductance measurement. TH1775 also provides a perfect solution for magnetic material analysis.

Product

Zero Bias Schottky Detectors

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Fairview Microwave Inc.

Fairview Microwave Inc.

Fairview Microwave’s line of coaxial packaged zero bias Schottky detectors feature matched inputs for excellent VSWR, voltage sensitivity levels that range from 100 to 500 mV/mW for small signal detection, negative video output polarity, and can withstand maximum input power levels up to +20 dBm CW. Operating temperature range covers 0°C to +90°C and storage temperature of -65°C to +125°C. These zero bias Schottky detectors utilize compact cylindrical package outlines that are made of passivated stainless steel and offer a variety of popular input/output SMA and BNC connector configurations that make them ideal for use with precision test and measurement, instrumentation, and subsystems assemblies. Numerous applications include power measurement, leveling pulsed signal sources, AM noise measurements, radar or missile guidance systems, monitoring system level performance, and pulsed RF measurements.

Product

Low-Noise DC Bias

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Pulse Instruments

Pulse Instruments

Imaging devices, such as CCDs, IR FPAs, and CMOS image sensors, require DC bias with very low electrical noise to prevent contamination of the image. Image quality can also be enhanced by carefully tuning each bias voltage to extract the maximum signal/noise ratio out of an array. Pulse Instruments has decades of experience providing DC bias supplies with the flexibility required tocharacterize and test a variety of devices while maintaining the noise immunity required for satellite and astronomy applications.

Product

Low Input Bias Current Op Amps (≤100 pA)

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Analog Devices Inc.

Analog Devices Inc.

Low input bias current op amps are required whenever the difference of currents or voltage is small and needs to be measured accurately. These op amps are used so that the signal is not loaded down by the input of the op amps. Low input bias current op amps are critical for interfacing sensors in applications from photodiodes, pH meters, or other electrometer related functions to downstream electronics. Analog Devices has many precision op amps that fit the definition and range of these applications.

Product

RF Amplifiers Bias Controllers

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Analog Devices Inc.

Analog Devices Inc.

RF amplifier bias controllers generate a regulated drain voltage and actively adjusts the gate voltage of an external amplifier to achieve constant bias current. It can be used to bias any enhancement and depletion type amplifier operating in Class-A regime with drain voltages (VDRAIN) as specified. These devices achieve excellent bias stability over supply, temperature and process variations, and eliminates the required calibration procedures used to prevent RF performance degradation due to such variations.

Product

RF Bias Burn-In System

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Accel-RF Corporation

Accel-RF Corporation

These systems deliver an unbeatable combination of advantages over a wide range of RF frequencies and power levels. The Automated Multi-Channel RF-Biased Burn-In Test System is a turnkey system that incorporates all of the capability needed for accelerated aging and parametric testing of RF semiconductor devices. Its powerful software elegantly supports data acquisition, storage, and presentation. Accel RF’s customers choose system features to meet their technical needs and capital budget. In addition to cost savings, use of Accel-RF’s solutions accelerate product time-to-market, saving many months of product development.

Product

Bias Networks

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Keysight Technologies

Keysight Technologies

RF and microwave bias networks are used in a wide variety of biasing applications for test and measurement requirements in laboratory and production environments. Bias networks provide the means of supplying DC bias to the center conductor of the coax connector for your device while blocking the DC to the RF ports.

Product

Magic Tees

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CAES

CAES

As part of our extensive waveguide portfolio, CAES offers a wide range of magic tees and hybrid tees to help add, subtract or divide signals in your designs.

Product

High Power Switch and Bias Module

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Macom Technology Solutions Holdings Inc.

Macom Technology Solutions Holdings Inc.

MACOM’s High-Power Switch and Bias modules are extensively used in 4G and 5G TDD base stations as well as aerospace and defense applications. The PIN Diode Switch features high power handling, low insertion loss, and super board band performance. The integrated bias controller utilizes a boost circuit and provide the driver circuitry to the switch. The modules require only a single 5 V supply, and a single TX / RX control signal which greatly reduced the customer design complexity.