5 GHz SiGe transistors
NEC has introduced a series of 5 GHz NPN silicon germanium transistors. Ideal for use as LNA devices in wireless LAN, cordless phones, and short-range wireless applications, these low noise and high associated gain devices combine the performance advantages of GaAs with the cost advantages of silicon. Both transistors are fabricated using NEC's SiGe UHS2-HV (High Voltage) wafer process. This process yields devices that can use both a wider and higher range of power supply voltages for more design flexibility. Both the NESG2021 and NESG2031 are housed in a miniature, low profile, flat lead M05 package. Based on the SOT-343 footprint. It features a 0.59 mm high and measures just 2.0 × 1.25 mm. Design samples are available now from California Eastern Laboratories. Pricing is at 35¢ for the NESG2021 and 37¢ for the NESG2031 (in 100 K quantities). For data sheets, visit CEL's website.
California Eastern Labs
Specifications at a glance: NESG2021M05
- Noise Figure @2GHz = 0.9dB
- Noise Figure @5.2GHz = 1.3dB
- Associated Gain @2GHz = 18dB
- Associated Gain @ 5.2GHz
- Maximum VCEO = 5 VDC
Expanded line of high reliability chip resistors
SOTA announces new QPL sizes of its chip resistors. Available termination styles for the resistors are solderable nickel barrier, epoxy bondable and gold wire bondable. These resistors are available with tolerances as low as 0.1 % and they offer an operating temperature from -55 to +125° C. Users can select an established reliability level of “M,” “P,” “R,” and “S” level for the SOTA thick film 0502, 0402, 0603 chip resistors; or, customers can request a “T” Space Level for mission critical and other applications that require an even higher reliability. The SOTA chip resistors, designed for use in mission critical applications such as manned space flight, life support systems, human implantable medical devices, and for prolonged periods in satellite communications.
State of the Art Inc.
Civcom announces Free-X Shutter
Civcom has announced the addition of the Free-X 1 × 1 Shutter to its family of SFS-based multi-function all-optical switching devices. Based on SFS (Solid Free Space) technology, the Free-X Shutter is extremely flexible and well suited for integration into free-space configurations. It is suitable for applications such as receiver protection in telecommunication, test & measurement devices, laser range finders, LADAR systems and high power laser Q-switching. In military applications, such as LADAR systems and laser range finders, the system filters out unwanted reflections from close objects and can prevent receiver saturation. The shutter is a 250 ns low loss shutter that incorporates no moving parts. It allows partial shutting which enables in essence variable optical attenuation (VOA). These shutters can be collimated into either fibers (single-mode/multi-mode) or free-space elements while maintaining exceptional extinction ratio.
Space-qualified, quad multiplying DAC
Maxwell has introduced a space-qualified, quad multiplying digital-to-analog converter. The 8408 is a monolithic, quad 8-bit multiplying DAC CMOS converter with four separate DACs, each with its own reference input and on-board data latches. Data loading into the 8408 is similar to the write cycle utilized in RAM. Suitable for both audio decoding and process control, it provides a low power, highly accurate solution.
Digital I & Q detector
Pascall Electronics is introducing a digital I&Q detector for use in radar, electronic warfare (ELINT and SIGINT) and specialist communications receiver systems. The detector demodulates quadrature modulated carriers and presents the resultant I & Q signals in 12 bit digital format at the output for further digital processing. The analogue I & Q signals are also available. Units can be produced for input frequencies of up to 500 MHz and bandwidths of up to one octave. Current models are capable of sampling at up to 60 MHz. Future versions will be able to capture data at faster rates. Power requirements are ±12 VDC with an operating temperature range of -40 to +85°C.
Low-noise 20 GHz PL oscillator for military apps
Elcom has released a new 20 GHz frequency oscillator, locking to 5 MHz reference input in a single loop. Its low power consumption, along with its compact size, sturdy structure and ultra low phase noise offer an attractive solution for various defense applications.
1700 to 2000 MHz, 5 W amplifier
Stealth Microwave has developed the SM1720-37HS, a compact class A amplifier operating from 1700 to 2000 MHz. Output power, at P1dB, is +37 dBm (min) with a +51 dBm (min) OIP3. Linear gain is 34 dB with 1.0 dB peak to peak flatness. DC supply is +12 Volts @ 1.6 Amps, (+10V operation is available). Dimensions are 4.7 L × 2.0 W × 0.54 H inches. Features include mis-match protection, single power supply, over voltage protection, thermal protection with auto reset, and logic on/off control.
Differential amplifier simplifies high-res ADCs
Analog Devices has introduced the AD8351. The device is a single-chip, low-distortion, fully-differential amplifier optimized to drive high-speed (70-MHz), high-resolution (12- to 14-bit) ADCs. Suited for use in 3G UMTS/CDMA2000 wireless infrastructure systems and associated instrumentation and test equipment, it is capable of delivering a low distortion signal at IFs beyond 70MHz. It simplifies ADC driving by allowing the user to adjust the common mode range and set the gain from 0 dB to 26 dB (voltage gains from 1 to 20) with a single external resistor. It provides a -3 dB bandwidth of 2.2 GHz with a gain of 12 dB, low noise spectral density of 2.2 nV/rt-Hz and second/third order harmonic distortion of -79/-81 dBc @ 70 MHz. Operation is specified from a single 3- or 5-VDC supply drawing quiescent current of just 27 mA. The AD8351 is priced at $3.69 per unit in 1,000-piece quantities.
Analog Devices Inc.
Specifications at a glance:
- 0 to 26 dB adjustable gain
- -3 dB gain bandwidth of 2.2 GHz
- 2nd/3rd order harmonic distortion of -79/81 dbC @70 MHz
500 MHz digitally controlled variable gain amplifier
Analog Devices announces the AD8369 digitally controlled variable gain amplifier (VGA). It was designed for use from very low frequencies to 500 MHz and provides flat gain response across all gain settings. The device provides a gain control range from -5 dB to +40 dB, adjustable in 3 dB increments, and controllable through a four-bit digital interface.
Mimix Broadband introduces 17 to 27 GHz buffer amplifier
Mimix Broadband has introduced a GaAs MMIC buffer amplifier supplied in a surface mount leadless chip carrier compatible with high volume surface mount technology (SMT) process. This SMT packaged XB1001P1 is a three-stage buffer amplifier can be biased for low noise or power configurations. The amplifier has a small signal gain of 19 dB and typical output IP3 of 27 dBm across the band. Using 0.15 micron gate length GaAs pseudomorphic high electron mobility transistor (pHEMT) device model technology, this chip covers the 17 to 27 GHz frequency band and has been specifically designed as a LO driver or buffer amplifier. The device is suitable for wireless communications applications such as millimeter-wave point-to-point radio, LMDS, SATCOM and VSAT applications.
Mimix Broadband Inc.
Specifications at a glance:
- Small signal gain of 19 dB
- -3 dB gain bandwidth of 2.2 GHz
- 17 to 27 GHz frequency band
High power pulsed L-Band solid state power amplifier
Aethercomm has debuted the SSPA 1030-1090-100, a high power pulsed L-band solid state power amplifier that operates over the 1030 and 1090 MHz bands. It is designed for secondary surveillance radars and supports IFF interrogator challenge and transponder reply waveforms at 1030 and 1090 MHz. It offers >40 dB of saturated gain across the band. Minimum output power is 100 Watts at +70°C in saturation. I/O VSWR is < 1.5:1. This Class AB unit has a quiescent current of 2.6 A typical and operates from a +28 VDC Supply. It is housed in a modular case that is approximately 7.0" × 10.0" × 3.0" with a heat sink. Standard features include over/under voltage protection, reverse polarity protection and input/output open short circuit protection, forward and reflected power telemetry with a minimum of 20 dB dynamic range, full active biasing of all transistors and an extremely well regulated DC-DC converter. Operation from -40 to +85°C is standard.
Low-cost, medium-power LDMOS FET
California Eastern Laboratories has added a new silicon LDMOS FET to its family of NEC low-cost, medium-power devices. Useable from UHF to 2.5 GHz and designed to accommodate battery voltages from 3 to 8 VDC, the NE552R479A has application in a variety of handset and portable products.
New range of SUPERmini series of zener diodes
Central Semiconductor has extended the voltage range of the SUPERmini™ CMDZ Series of zener diodes packaged in the SOD-323 surface mount case. This series now covers a range of voltages from 1.8 (CMDZ1L8) to 47 VDC (CMDZ47L), and all devices have been specified with a low test current (IZT) of 500 μA. The diodes are voltage regulators designed for applications requiring a low operating current, low leakage, and a sharp knee. These zener diodes are all rated for operation from -65 to +150°C. The CMDZ series of devices are available either Bulk Packed or 3,000 pcs on 7" tape & reel. Pricing starts at $0.12 each for 3,000 pcs. on a 7" reel.
Dual hot-swap controllers all power-supply sequencing
Maxim has introduces the MAX5918 and /MAX5919 low-voltage, dual hot-swap controllers. The devices allow the safe insertion and removal of circuit line cards with multiple supplies from a live backplane. Rated for systems with 1 to 13.2 VDC supplies, the devices limit the inrush current to the load and provide protection against overcurrent conditions and load transients. The devices are designed for systems that distribute low voltages to hot-swappable line cards. They include a variable-speed/bilevel circuit-breaker response feature that protects against overcurrent conditions and prevents nuisance trips caused by noise and load transients. Both devices allow independent control of two separate supplies and can be configured for power-supply sequencing by programming delays on the on/off inputs. Other features include undervoltage lockout (UVLO), output undervoltage/overvoltage monitoring or protection, adjustable circuit-breaker threshold and startup period. Prices start at $3.47 (1000-up, FOB USA).
Maxim Integrated Products Inc.
K&L offers surface mount terminated diplexer
K&L Microwave has released the 3KCZ70-80/X3170 diplexer that offers 14 dB input return loss over the passband 80 MHz to 870 MHz and the rejection band of 1165 MHz to 3170 MHz. Insertion loss is less then 0.5 dB from 80 MHz to 870 MHz. Rejection is 30 dB minimum at 1165 MHz to 1950 MHz, 25 dB minimum at 1950 MHz to 6000 MHz and 15 dB minimum at 6000 to 9725 MHz. Package is surface mountable. Outline dimensions are 0.75 × 0.50 × 0.30".
K&L Microwave Inc.
Ethertronics rolls out multi-band embedded antennas
Ethertronics has launched a tri-band embedded antenna solutions for cellular applications. The GW tri-band embedded antenna offers high-performance, efficiency, isolation and selectivity for tri-band wireless devices. The antenna operates on the 900 MHz GSM, 1800 MHz DCS and 1900 MHz PCS frequency bands, delivering a single, multi-use embedded antenna component that enables global roaming for mobile phones and cellular data. The antenna delivers an 80 to 100% improvement in the SAR-to-efficiency ratio. This translates into increased signal strength, battery life and talk time, while reducing the RF exposure to the user. The devices high isolation properties allow auxiliary antennas, including Bluetooth (MB model) and GPS (MG model), to be placed in close proximity to each other with minimal coupling. It also significantly reduces the energy transmitted towards the user's body, usually representative of a lower SAR measurement for the wireless device.
Expanded line of data FO products
JDS Uniphase expanded its Gigabit Ethernet and fibre channel offerings for the data communications market with the announcement of its 10 GbE XENPAK, a 10 Gb Ethernet optical transceiver. The new transceiver meets IEEE 802.3a,e and the XENPAK multi-sourcing agreement, the most widely adopted standards for this product category.
Analog Devices introduces 12-bit analog-to-digital converter
Analog Devices has announced a new, fast 12-bit analog-to-digital converter (ADC). The device is capable of encoding at 210 Ms/s (mega samples per second). It is 68% faster than the next fastest available converter. It features the precision and speed required to support the next generation of communications and high-end imaging applications. These applications include broadband cable modem head-end systems; 3G radio transceivers; as well as high-data-rate point-to-point radios; medical imaging systems; and spectrum analyzers. In addition, its performance allows designers to increase data rates in radio point-to-point systems by migrating to high orders of modulation-from PSK-based to QAM or OFDM. In cellular infrastructure transmit systems, designers can use the AD9430 to take advantage of digital pre-distortion techniques for 3G systems that require digitization of the entire multi-carrier transmitted spectrum in a band up to 70 MHz. The device has excellent SNR (signal to noise ratio) performance of 64 dB up to 65 MHz at 210 Ms/s and SFDR (spurious free dynamic range) of 80 dBc up to 65 MHz at 210 MSPS. INL (integral nonlinearity) is typically 1.5 LSB (least significant bit) and DNL is 1 LSB. Power dissipation of the AD9430 is typically just 1.3 W at 210 MSPS. The AD9430BSV-170, is priced at $75 per unit in 1,000-piece quantities. The AD9430BSV-210 is priced at $91 per unit in 1,000-piece quantities.
Analog Devices Inc.
Specifications at a glance:
- 64 dB S/N to 65 GHz
- SFDR of 80 dBc to 65 GHz
- 1.3 W power dissipation @210Ms/s
- CMOS- or LVDS-compatible outputs
New connector ideal for board-to-panel feed
RF Industries new PCB mount connector is designed for use in applications with a frequency range of DC to 11 GHz. The RFS-2030 has a voltage rating of 1,500 VDC peak, insulation resistance of 5 KΩ max, dielectric withstanding voltage of 2,500 VRMS @sea level, RF high potential withstanding voltage of 1,500 VRMS @sea level @5 MHz; temperature range of -65 to +165°C, and interfaces per MIL-STD-348A, Sec. 304.2. The body is nickel-plated machined brass with Teflon insulation and silver plated phosphor bronze contact. The bulkhead seal is an inset GR70 nitrile o-ring. The mounting configuration is four posts with standoffs spaced 0.400" on center.
Trompeter launches new Mini-WECo patchjack
Trompeter Electronics announced the release of a new pcb-mounted side launch mini-WECo dual patchjack (CBJE314MW) that delivers high bandwidth digital signals at elevated frequencies with excellent return loss characteristics. In addition, the unique side launch design allows for a low profile z-direction, enabling higher density of modules per panel. This new solution enables the use of PCB technology for patching and DSX applications, opening up a new range of digital signal patching and routing options where 75Ω mini-WECo patch technology is used. The CBJE314MW achieves full signal processing capability through 3 GHz at performance levels of -30 dB in the normal thru condition. It is available in terminated and non-terminated versions. Product pricing in 1000 pc quantities for the terminated version is $30.10 each.
1.5 mm low profile SMT microleaf connector
AVX Corp. announces a new family of SMT Microleaf two-piece board-to-board connectors designed to meet miniaturization standards in the portable equipment marketplace. Designated the 5602 Series, it is designed to prevent the detachment of plug and receptacle after mating. Applications include mobile phones, notebook computers, MP3 players, PDAs and other portable electronic devices. The series features a mated height between boards of 1.50 mm on a pitch of 0.4mm. A wide range of pin configurations is available with standard counts from 20 to 80 pins with contacts rated at 0.4A. It has a maximum rated voltage of 50 VDC and a DW voltage of 250 VRMS per minute. The connectors are available in tape-and-reel packaging of 2,000 pieces per reel. Typical pricing for the 5602 Series ranges from $0.50 to $2.00
1.85mm connectors and adapters
Tensolite has added the 1.85 mm series of connectors to the Tensolite Family. The connector was developed to go beyond the 2.4 mm connector's maximum performance. The 1.85 mm connector is threaded, (M 7.0 × .75-6G) with performance to 60 Ghz, utilizing an air interface. Specifications include:. Frequency range from DC to 60 Ghz, a VSWR of 1.25: 1 max to 60 GHz, a return loss of 19 dB max to 60 Ghz, insertion loss of 0.30 dB to 60 Ghz and temperature range of -55° to 165°C.
N-Type UNAT fixed attenuators.
Mini-Circuits has developed a new line of N-type UNAT fixed attenuators. the line includes a selection of thirteen different attenuation values ranging from 1 to 20 dB,. The devices offer excellent return loss, and flat attenuation over the broad DC to 6.0 GHz band The family's features include, low cost, unique unibody construction that endures rigorous applications and wide temperature extremes ranging from -40 to +100°C. Price: From $15.95 each. (Qty. 1-9)
FEIG Electronic announces new reader module
FEIG has announced the ID ISO.RWM02, RFID reader module. The new reader identifies both ISO 14443 (proximity card) and ISO 15693 (vicinity card) transponders. The 50 × 50 mm module with integrated antenna and an RS-232 - TTL serial interface, has a maximum reading distance of 9 cm when identifying ISO 15693 transponders. ID ISO.RWM02 also supports the ISO 14443 encryption and security functions found in specific transponders. The security functions prevent unauthorized access to the data transfer between the reader and tag, which is particularly critical in payment and ticketing applications. The device has a maximum read range of 4 cm for ISO 14443 tags.
FEIG Electronic GmbH
Specifications at a glance:
- RS232-TTL serial interface
- Supports ISO 14443 encryption
- Integrated antenna
Matrics announces family of UHF ID products
Matrics has introduced a passive UHF (902 to 928 MHz) product family. Designed to create a “people-free” wireless environment for tracking products and assets. A 1D medium strip version that is approximately 6" long by ¾" wide, a 2D square version that is approximately 4" × 4", and a 2D square version that is approximately 2" × 2" and can be laminated into plastic cards. The 2D inlay is unique to the industry because the IC has two ports that allow for perpendicular antenna construction that is this design that creates an orientation-insensitive smart label. With an approach that removes the circuit complexity from the IC, the tags are simple and inexpensive to produce. The lean chip design requires very low power and consequently produces powerful read ranges. Each chip is secure and tamperproof, because the unique ID is programmed very early in the manufacturing process. Inlays can be incorporated into standard laminated paper or plastic to create inexpensive stick-on labels. The smart labels can be attached to or embedded in products, boxes, pallets, trays and/or totes to produce a “people-free,” wireless system that uniquely identifies and tracks items as they travel through the supply chain. Since data is collected automatically from the labels, no human error is introduced, thus maintaining the integrity of the database.
Specifications at a glance:
- UHF 900 to 928 MHz
- Orientation insensitive
- Very low power demand
Silicon Labs. has announced the Aero+ GSM/GPRS transceiver, a new addition to the company's patented 100 percent CMOS radio frequency (RF) Aero transceiver product family. The Aero+ transceiver brings a new level of integration to multi-band GSM digital cellular handsets and GPRS voice and data terminals. With an integrated digitally controlled crystal oscillator (DCXO), the Aero+ transceiver eliminates the need for an expensive voltage controlled temperature compensated crystal oscillator (VC-TCXO), which saves handset manufacturers more than 15% in bill of material (BOM) costs over existing solutions. Additionally, the transceiver integrates the IF SAW filter, external low noise amplifiers (LNAs), transmit and RF voltage controlled oscillator (VCO) modules and more than 60 other discrete components. Its software programmable universal baseband interface allowing handset designers to implement the Aero+ with any baseband subsystem. It is also fully compliant with GPRS cClass 12 requirements providing high-speed data communications to the mobile computing environment. The Aero+ transceiver includes: the 32-lead micro-leadframe package (MLP) Si4200 transceiver; 20-lead MLP Si4201 baseband interface; and 32-lead MLP Si4134T RF synthesizer. The Aero+ chipset is offered at $5.80 in quantities of 10,000.
Specifications at a glance:
- GSM/GPRS multiband
- Integrated DCXO
- Integrated IF SAW filter
- Integrated LNA
- Integrated VCO
New single-chip conversion transceiver slashes costs
Skyworks has introduced a new single-chip direct conversion transceiver that simplifies the design of multi-band GSM handsets. The company has integrated the crystal oscillator circuitry and power amplifier controller functionality into a smaller 8mm × 8mm package, further reducing the bill of materials cost by $1 to $2 per phone. The CX74063 transceiver supports general packet radio service (GPRS) and enhanced data rates for global evolution (EDGE) standards, and provides a roadmap to dual-mode, wide-band code division multiple access (W-CDMA)/GSM universal mobile telecommunications (UMTS) handsets. The system's architecture reduces the number of external components required to build a mobile handset by more than one-third, reducing the size, cost and power requirements of next-generation GSM handsets. The device integrates all of the circuitry associated with generating a 13 MHz or 26 MHz system reference frequency, with the exception of the crystal. The transceiver consists of integrated quad-band low-noise amplifiers (LNAs), a quadrature demodulator, baseband filters and a direct current (DC) offset correction sequencer. It uses a low-frequency, low-pass filter to perform all of the required tasks associated with rejecting in-band blocking signals and adjacent alternate channels. This approach contrasts with superheterodyne architectures that require external surface acoustic wave (SAW) filters for each of the bands supported in a multi-band handset as well as a VHF voltage controlled oscillator (VCO). Key transceiver features include a translational loop structure on the transmitter side, consisting of an in-phase and quadrature (I/Q) modulator, offset mixer, phase detector and internal quad-band transmit VCOs without an external tank. The transmitter offers exceptionally high performance, thus also reducing the number of external components. The local oscillator structure is formed around a fractional-N phase lock loop (PLL) with all components integrated with the exception of the external passive loop filter. Agile channel switching enables support of GPRS multi-slot operation, and key performance parameters are optimized through the use of Skyworks' internally developed, low-cost RF packaging technology. The transceiver is packaged in a 8 mm × 8mm 56-pin RF land grid array (RFLGA) and is priced at $5.50 in quantities of 10,000.
Skyworks Solutions Inc.
Specifications at a glance:
- Supports EDGE and GPRS
- Integrated 13/26 MHz reference frequency support
- Quad-band LNA
- 56-pin RFLGA package
New GPS receiver IC
SiGe Semiconductor has launched its PointCharger family of GPS devices. It's first product is the SE4100 integrated receiver IC, which delivers benchmark levels of power consumption and integration to enable smaller, less expensive, and longer battery powered operation of peripheral devices used for automotive vehicle location (AVL), covert tracking, security, cellular, PDA, and personal navigation systems. The device integrates the IF filter, VCO, tank circuitry and LNA into a compact, 4 mm2 package with a typical current draw of 10 mA from a 2.7 VDC supply. Integrating the complete receiver chain onto a single device substantially lowers the bill of materials compared to most commercially available radios, thereby reducing cost and form factor, while easing assembly, manufacture and test. The silicon germanium based device offers low power consumption for a GPS radio — about 1/3 the current draw of current solutions. The extremely low power consumption, high performance LNA and very low external component count allow the device to be very cost effectively implemented in portable devices where the GPS antenna is in the same enclosure. Price is US $3.50 in 10k quantities
TEST AND MEASUREMENT
AAnritsu rolls out vector network measurement systems
Anritsu has released the MS4624x series Scorpion Vector Network Measurement System (VNMS). Increasing Scorpion's frequency range to 9 GHz, the series is available in 2-, 3, and 4-port configurations for conducting fast and highly accurate passband and higher frequency out-of-band rejection measurements on both single-ended and balanced devices, including those used in 3G handsets. The series has simulation tools for mixed-mode S-parameters, embedding/de-embedding and arbitrary impedance. Its arbitrary impedance transformations accurately handle non-50Ω measurement scenarios typically associated with balanced devices, making the VNMS well suited for applications requiring ripple, insertion loss and amplitude imbalance accuracy on the order of ±0.1 dB. The system features 150 νs/point speed, 125 dB dynamic range and ±0.03 dB uncertainties for passband S21 measurements. Starting base price in the U.S. of $35,000. The MS4624x series is available for delivery in 8 weeks ARO.
Specifications at a glance:
- 150 µs/point speed
- 125 dB dynamic range
- ±0.03 dB uncertainties for pass band S21 measurements.
SoC designs with acc. cores for NG JPEG and MPEG
Amphion Semiconductor has developed ASIC- and FPGA-targeted versions of its hardware-accelerator cores for MPEG-4, MPEG-2, and JPEG2000 compression with AHB interfaces compatible with the AMBA® specification for on-chip system bus connectivity. The provision of Advanced High-Performance Bus (AHB) interfaces greatly enhances the applicability of Amphion's silicon-efficient core solutions to AMBA-based SoC designs, such as those leveraging RISC microprocessor cores from ARM® and other processor IP providers. The move to wrap its accelerator cores with industry-standard interfaces is integral to Amphion's strategy to expedite the design of complex systems-on-silicon for multimedia communications applications.
Networking for fortified security and mobility
ReefEdge has enhanced its Connect System to add support for SpectraLink's 802.11-based NetLink Wireless Telephones. The ReefEdge Connect System 3.0 is offers the capabilities and performance needed to address the security issues that 802.11-based technology presents. It implements security in a multi-faceted manner via authentication, policy-based access control, and strong data encryption. Connect 3.0 offers a number of other enhancements to the Connect System, including choices between several different routing, bridging, and addressing modes for each user on the Connect System to ensure maximum performance and compatibility, redundancy at the server side and at the edges of the network, support for DOS-based devices and other additional deployment options.
High-Resistance, low TC, precision chip resistor
Caddock has introduced the CHR2520FC, a high-resistance, low- TC, precision chip resistor. It is available in eight standard values form 10 MΩ to 100 MΩ with 1% tolerance. The “Low TC” (temperature coefficient) is ±25 ppm/° C from +10 to +40° C ref, to +25°C. Such specifications are ideal for CT scanning systems, as well as process instrumentation and advanced measurement applications. It is a flip-chip style chip resistor for standard SMT reflow solder processes. Applications include photomultiplier, high gain amplification, or differential amplifier designs. It can also be used as the input resistor in high input impedance voltage division. Custom Versions of the resistors will be available for high quantity applications with resistance as high as 1000 MΩ, higher voltage ratings, tolerances as tight as ±0.25%. Availability lead time is stock to 6 weeks ARO, packaging is in tape and reel — 1000 pieces per reel. Smaller quantities available in strips of tape.