References
A source of comparison.
See Also: Reference Standards, Reference Antennas, Reference Decoders, Reference Jumpers, Reference Sources, Reference Transformers, Reference Transmitters, Acoustical References, Frequency References, Solar Reference Cells
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Voltage References
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Renesas' wide selection of voltage reference (Vref) circuits offer accurate and stable reference voltages unaffected by external influences such as variation in temperature, input voltage and time.
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Product
300nA NanoPower Voltage References
ISL21080
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The ISL21080 analog voltage references feature low supply voltage operation at ultra-low 310nA typ, 1.5µA max operating current. Additionally, the ISL21080 family features guaranteed initial accuracy as low as ±0.2% and 50ppm/°C temperature coefficient.
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Shunt Voltage References
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Analog Devices offers a broad line of shunt precision voltage references that combine excellent accuracy and temperature stability with low noise and small packages. These devices operate in a manner that is functionally equivalent to a Zener diode. The bias current must be set higher than the sum of the maximum quiescent current of the voltage reference and the maximum expected load current. Since shunt voltage references are typically biased with a resistor, the voltage reference can operate on a wide range of input voltages.
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Precision Low Power FGA™ Voltage References
ISL60002
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The ISL60002 FGA™ voltage references are very high precision analog voltage references fabricated on Renesas' proprietary Floating Gate Analog technology and feature low supply voltage operation at ultra-low 350nA operating current. Additionally, the ISL60002 family features guaranteed initial accuracy as low as ±1.0mV and 20ppm/°C temperature coefficient. The initial accuracy and temperature stability performance of the ISL60002 family, plus the low supply voltage and 350nA power consumption, eliminates the need to compromise thermal stability for reduced power consumption making it an ideal companion to high resolution, low power data conversion systems.
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Micropower Voltage References
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Analog Devices offers a broad line precision micropower voltage references with extremely low quiescent currents (series references) or minimum shunt currents (shunt voltage references). All of our precision voltage references offer excellent initial accuracy and low temperature drift over time and temperature. Our Reference Plus products combine precision voltage references with comparators or amplifiers.
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Reference Oscillator
REF Series 1.5” x 1.5” x 0.6”
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*Connectorized Package *Free Running *Low Phase Noise *Output Power to +12 dBm Available
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Product
2-Channel 200 MHz A/D with 766 DDCs, Kintex UltraScale FPGA - 3U VPX
Model 52865
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- Jade Xilinx Kintex UltraScale FPGA Products and Navigator Design Suite Software Video- Jade Xilinx Kintex UltraScale FPGA Family Brochure- Complete software radio receiver solution for extremely high-channel-count applications- Uses Xilinx Kintex UltraScale KU035 FPGAs- Two 200 MHz 16-bit A/Ds- Four wideband DDCs (digital downconverters)- Up to 762 narrowband DDCs- Sample clock generation and synchronization to an external system reference- PCI Express (Gen. 1, 2 & 3) interface up to x4- Compatible with several VITA standards including: VITA-46, VITA-48 and VITA-65 (OpenVPX™ System Specification)- Ruggedized and conduction-cooled versions available- Synchronize up to eight modules with Model 7893 System Synchronization and Distribution Amplifier - PCIe
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Product
SMB Female to BNC Female Cable, 50 Ohm, 61 cm
763389-01
Coaxial Cable
The SMB-BNC Coaxial Cable, sometimes referred to as SMB-100 or SMB-110, connects measurement and signal devices. NI offers this 50 Ω cable in different lengths and quantities.
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Potential Meters
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Potential meters are basically electrometers which have extremely high input resistances in order to keep the feeding reference electrode free of load. This is necessary to maintain the true potential. pH - meters can be used as potential meters when fast reading is not required, because common pH meters are very slow. When the potential answer to current pulses is to be followed, potential meters are essential.
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3-Ch 200 MHz A/D with DDC & 2-Ch 800 MHz D/A with DUC, Virtex-7 FPGA - 3U VPX
Model 52721
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- Supports Xilinx Virtex-7 VXT FPGAs- GateXpress supports dynamic FPGA reconfiguration across PCIe- Three 200 MHz 16-bit A/Ds- Three multiband DDCs- Two 800 MHz 16-bit D/As- One DUC (digital upconverter)- Multiboard programmable beamformer- 4 GB of DDR3 SDRAM- Sample clock synchronization to an external system reference- LVPECL clock/sync bus for multiboard synchronization- PCI Express (Gen. 1, 2 & 3) interface up to x4- Optional LVDS connections to the Virtex-7 FPGA for custom I/O- 3U VPX form factor provides a compact, rugged platform- Compatible with several VITA standards including: VITA-46, VITA-48 and VITA-65 (OpenVPX™ System Specification)- Ruggedized and conduction-cooled versions available- Supports GateXpress® FPGA-PCIe Configuration Manager- Synchronize up to eight modules with Model 7893 System Synchronization and Distribution Amplifier - PCIe
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Mini PCI Express Timecode and GPS Reader Generator
SyncClock
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The Mini PCIe SyncClock32 from Brandywine Communications provides precision time with zero latency to the host computer using one Mini-PCIe slot. An on-board microprocessor automatically synchronizes the clock to reference signal inputs. The reference signal inputs can be 1 PPS, IRIG or NASA time codes and optionally, HaveQuick.
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Soil Moisture, Temperature, and EC Sensors
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Soil volumetric water content probes (sometimes referred to as soil moisture sensors) measure the water content of soil. These probes can be used to estimate the amount of stored water in a profile or how much irrigation is required to reach a desired amount of water in the soil. These probes can be used for quick measurements or installed for long-term measurements.
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5 Digit Frequency Meter
CS2-F
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CS2-F Freqeuncy Meter is designed high accuracy measurement, display, control and communication (Modbus RTU mode) of pulse(Frequency) or AC Frequency.● The innovation feature is auto-range input from 0.01Hz~ 100KHz(~140KHz in option). The display resolution will be auto-changed to show the highest according to input frequency. They are also building in 4 Relay outputs, 3 External Control Inputs, 1 Analogue output and 1 RS485(Modbus RTU Mode) interface with versatile functions such as control, alarm, re-transmission and communication for a wide range of testing and machinery control applications. Please refer to the detail description on pages 2/33~7/33.There are not only controllers, but also an I/O interface in any system. ADtek built in difference ideal for External Control input and Relay output as like as I/O module of PLC. It’s very connivance to achieve remote monitoring and control by CS2 series.
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Ultra-Low Noise, Precision Voltage Reference
ISL21090
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The ISL21090 is an ultra-low noise, high DC accuracy precision voltage reference with a wide input voltage range. The ISL21090 uses Renesas' advanced bipolar technology to achieve sub 1.0µVP-P (1.25V option) 0.1Hz to 10Hz noise with an initial voltage accuracy of 0.02% (2.5V option).
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Product
4-Channel 200 MHz A/D with DDC, Kintex UltraScale FPGA - 3U VPX
Model 52861
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- Jade Xilinx Kintex UltraScale FPGA Products and Navigator Design Suite Software Video- Jade Xilinx Kintex UltraScale FPGA Family Brochure- Complete radar and software radio interface solution- Supports Xilinx Kintex UltraScale FPGAs- Four 200 MHz 16-bit A/Ds- Four multiband DDCs (digital downconverters)- 5 GB of DDR4 SDRAM- Sample clock synchronization to an external system reference- LVPECL clock/sync bus for multimodule synchronization- PCI Express (Gen. 1, 2 & 3) interface up to x4- Optional LVDS and gigabit serial connections to the FPGA for custom I/O- Compatible with several VITA standards including: VITA-46, VITA-48 and VITA-65 (OpenVPX™ System Specification)- Ruggedized and conduction-cooled versions available- Synchronize up to eight modules with Model 7893 System Synchronization and Distribution Amplifier - PCIe
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Climatic Test Chambers
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Dongguan Amade Instruments Technology Co., Ltd
Climatic test chambers are also referred as environmental test chambers, which is the general name of various test chambers that simulate the natural climate environment of raining, high temperature, low temperature, constant temperature, illumination, dewing etc, products including constant temperature chamber, constant humidity chamber, ozone aging test chamber, UV accelerated weathering tester, vacuum hot air oven, salt spray chamber, steam aging tester, rain test chamber, dust proof test chamber, ventilation aging chamber, xenon lamp weathering test chamber and so on.
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8 Channel A/D & D/A Zynq UltraScale+ RFSoC Processor - SOSA Aligned 3U VPX
Model 5550
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- Now available in RFSoC Gen 3 with the Model 5553- Supports Xilinx® Zynq® UltraScale+™ RFSoC FPGAs- 16 GB of DDR4 SDRAM- On-board GPS receiver- 10 GigE Interface- 40 GigE Interface- Optional VITA 67.3C optical interface for backplane gigabit serial communication- Dual 100 GigE UDP interface- Compatible with several VITA standards including: VITA 49, VITA 46, VITA 48, VITA 67.3C and VITA 65 (OpenVPX™ System Specification)- Ruggedized and conduction-cooled versions available- Model 8256 3U VPX SOSA Aligned Development Chassis- Model 6001 unique QuartzXM eXpress module enables migration to other form factors- Video: Model 8256 3U VPX SOSA Aligned Development ChassisPentek's Quartz Family of Xilinx Zynq UltraScale+ RFSoC FPGA Products Video- Live Signal Acquisition Video: Quartz Model 5950 and Model 6001 RFSoC boards- Pipeline Newsletter: Strategies for Deploying Xilinx's Zync UltraScale+ RFSoC- Synchronize up to eight modules with Model 5903 High-Speed System Synchronization and Distribution Amplifier - 3U VPX- Please refer to the product datasheet for Installed FPGA IP Module details
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Carrier Board Design and Software Verification Computer-on-Module Starter Kit
Starter Kit - ETX
Carrier Board
- ETX module of choice- CPU, Memory of choice- Thermal Solution (heatspreader, and heatsink) of choice- Reference Carrier Board- Schematics, Design Guide, and User Manuals- ADLINK USB Stick with Documentation, Software
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Frequency Shaped Isotropic Electric Probes
PI-SH-FCC, PI-SH-ICNIRP
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An isotropic electric field probe with shaped frequency response meeting the ICNIRP or FCC RF safety standards for occupational and general public exposure limits (see the specified frequency ranges below). Meter readings are shown in % of the STD – standard reference level, eliminating the need to know the source frequency. Probe output is proportional to RF power density in the whole specified power range, producing the correct RF power measurements in single and multi-signal environments, typically present at multiple antenna sites.
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Walk in Chamber for Rapid Rate Temperature / Humidity Test
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Guangdong Bell Experiment Equipment Co.,Ltd
DGBELL Walk in Chamber for Rapid Rate Temperature / Humidity Test Relevant standards requirement:Temperature shockTest Object: Battery storage pack or system.Li-ion battery pack or system placed in (-40±2)℃~(85±2)℃ alternation temperature, the conversion time of two extreme temperatures is less than 30 minutes. Place the test objects into each extreme temperature keep 8h, test 5 cycles.Observe for 2 hours under the room temperature after testing,Humidity & Temperature CyclingTest Object: Battery storage pack or system.Refer the GB/T2423.4 Test Db, variable refer the Graph 4,the highest temperature is +80℃,5 cycles. Observe for 2h under the room temperature.
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Rugged GPS Time & Frequency Reference
VersaSync
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VersaSync is a high-performance GPS master clock and network time server that delivers accurate, software-configurable time and frequency signals in harsh environments, including GPS-denied areas. Now with M-Code!
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Programmable Voltage Reference Plug-In
ProDAQ 3202
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The ProDAQ 3202 voltage reference card is used in the ProDAQ 3180 ultra-performance motherboards and LXI function card carriers. The ProDAQ 3202 voltage reference card is plugged directly onto the motherboard or carrier and can distribute the reference voltage to all ProDAQ function cards via two signal lines. This allows the distribution as a differential signal to overcome possible noise pick-up.
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Short Circuit Finders
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The ShortSniffer locates short circuits in electronics circuits, projects, and printed circuit boards. * locates PCB shorts under solder mask, under components, and even on inner PCB layers * non-contact (inductive) pickup wand * pinpoint short to within 2mm radius (SS2) * rapid location with audio feedback * "follow the sound to the short" * no need for relative or reference measurements * battery operated * diode clamped current drive, won't harm your circuitry
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Distribution Amplifiers
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A complete range of distribution amplifiers are manufactured by Precision Test Systems. A distribution amplifier is used to distribute the output of a frequency reference to many different places. Usually the frequency is 5 or 10 MHz but we manufacture distribution amps from DC to over 2000 MHz. We make some of the industries lowest phase noise products.
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Gas Filter Correlation Carbon Monoxide Analyzer
Model T300
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The Model T300 measures low ranges of carbon monoxide by comparing infrared energy absorbed by a sample to that absorbed by a reference gas according to the Beer-Lambert law. Using a Gas Filter Correlation Wheel, a high energy IR light source is alternately passed through a CO filled chamber and a chamber with no CO present. The light path then travels through the sample cell, which has a folded path of 14 meters. The energy loss through the sample cell is compared with the span reference signal provided by the filter wheel to produce a signal proportional to concentration, with little effect from interfering gases within the sample. This design produces excellent zero and span stability and high signal to noise ratio, allowing extreme sensitivity. All T Series instruments offer an advanced color display, capacitive touch screen, intuitive user interface, flexible I/O, and built-in data acquisition capability. All instrument set up, control and access to stored data and diagnostic information, is available through the front panel, or via RS232, Ethernet, or USB com ports, either locally or by remote connection.The Model T300 comes with NumaView™ Software. NumaView™ Remote PC Software allows for a remote connection with virtual interface and data downloading capability to analyzers operating NumaView™ Software.
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Digital to LVDT RVDT Converters
ST-DLVT
ITA
Computer Conversions Corporation
ST-DLVT series - Complete Digital to LVDT RVDT Converters On PCB with Mounting Track having Screw-Terminal Block for ease of wiring. 2 or 3-4 wire output configurations, Isolated Reference & Signals, 3V and 5V logic Compatible
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8-Channel A/D & D/A Zynq UltraScale+ RFSoC Gen 3 Processor - 3U VPX
Model 5953
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- Supports Xilinx Zynq UltraScale+ RFSoC FPGAs- 16 GB of DDR4 SDRAM- On-board GPS receiver- PCI Express (Gen. 1, 2 and 3) interface up to x8- LVDS connections to the Zynq UltraScale+ FPGA for custom I/O- Optional VITA-66.4 optical interface for backplane gigabit serial communication- Dual 100 GigE UDP interface- Compatible with several VITA standards including: VITA-46, VITA-48, VITA-66.4, VITA-57.4 and VITA-65 (OpenVPX™ System Specification)- Ruggedized and conduction-cooled versions available- Model 8257 1-Slot 3U VPX Development Chassis for Quartz Products- Model 4801 Carrier Design Kit for designing custom carrier for the Model 6003 QuartzXM- Model 6003 unique QuartzXM eXpress module enables migration to other form factorsPentek's Quartz Family of Xilinx Zynq UltraScale+ RFSoC FPGA Products VideoLive Signal Acquisition Video: Quartz Model 5950 and Model 6001 RFSoC boardsPipeline Newsletter: Strategies for Deploying Xilinx's Zync UltraScale+ RFSoCSynchronize up to eight modules with Model 5903 High-Speed System Synchronization and Distribution Amplifier - 3U VPXPlease refer to the product datasheet for Installed FPGA IP Module details
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High-Precision Inline Color Measurements
colorCONTROL ACS7000
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The colorCONTROL ACS7000 color measurement system not only recognizes reference colors by comparison, but identifies individual colors clearly from their coordinates in the color space. With its high speed spectrometer, the colorCONTROL ACS7000 is suitable for applications where colors and shades have to be examined online with the highest accuracy.
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1100-Channel GSM Channelizer wih Quad A/D - 3U VPX
Model 52663
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- Complete GSM channelizer with analog IF interface- Four 180 MHz 16-bit A/Ds- Two banks of 375 DDCs for upper GSM band- Two banks of 175 DDCs for lower GSM band- Sample clock synchronization to an external system reference- LVPECL clock/sync bus for multiboard synchronization- PCI Express Gen. 2 x4- 3U VPX form factor provides a compact, rugged platform- Synchronize up to eight modules with Model 7893 System Synchronization and Distribution Amplifier - PCIe
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Microwave Wideband Synthesizer w/ Integrated VCO
ADF5356
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The ADF5356 allows implementation of fractional-N or integer-N phase-locked loop (PLL) frequency synthesizers when used with an external loop filter and an external reference frequency. The wideband microwave VCO design permits frequency operation from 6.8 GHz to 13.6 GHz at one radio frequency (RF) output. A series of frequency dividers at another frequency output permits operation from 53.125 MHz to 6800 MHz. The ADF5356 has an integrated VCO with a fundamental output frequency ranging from 3400 MHz to 6800 MHz. In addition, the VCO frequency is connected to divide by 1, 2, 4, 8, 16, 32, or 64 circuits that allow the user to generate RF output frequencies as low as 53.125 MHz. For applications that require isolation, the RF output stage can be muted. The mute function is both pin- and software-controllable.
