Products

Integrated Circuits

Full-duplex transceiver module eases RF designs. The WLT9510 RF transceiver module employs the vendor's spread-spectrum, long-range wireless technology. The self-contained, full-duplex transceiver contains a spreading mixer, an up-converter, an output-power amp, a filter, a despreading mixer, a down-converter, a VCO, and a synthesizer. The WLT9510 costs $60 (10,000). Wireless Logic Inc, San Jose, CA. (408) 262-1876.

Micropower PWM IC builds high-efficiency dc/dc converters. The UCC3581 voltage-mode PWM controller helps you design dc/dc converters having a high efficiency at light load. The device's BiCMOS circuitry enables 85-mA start-up and 300-mA operating currents, allowing it to be driven from a high-impedance source, such as ISDN telephone lines. Packaging options include 14-pin plastic and ceramic DIPs, 14-pin narrow-body SOICs, and 20-pin PLCCs and LCCs. The UCC3581 costs $1.55 (1000). Unitrode Corp, Merrimack, NH. (603) 424-2410.

Low-power op amp slews 280 V/µsec at 5V. Consuming just 7.5 mW, the CLC450 current-feedback op amp delivers a small-signal bandwidth of 100 MHz and a slew rate of 280 V/msec and operates from a single 5V supply. In ±5V systems, bandwidth increases to 135 MHz and the slew rate jumps to 370 V/µsec. A buffer-driven common-emitter output allows the CLC450 to source or sink 100 mA and drive a 100V load within 1.2V of either supply rail. Packaging options include eight-pin plastic-DIP, SOIC, and SOT-23 configurations. The CLC450 costs $1.39 (1000). Comlinear Corp, Fort Collins, CO. (800) 776-0500.

5A regulator offers low dropout voltage. The CS-5205A-1 three-terminal linear regulator has a typical dropout voltage of 1.15V at 5A (1.25V max). By using a simple external resistive voltage divider, you can set the regulator's output voltage be-tween 1.25 and 18V, which is accurate to within ±1%, depending on the input voltage. Fully protected against short circuits and thermal runaway, the CS-5205A-1 comes in surface-mount D2 packs and TO-220 plastic packages with straight, horizontal, or vertical leads. The part costs $2.50 (10,000). Cherry Semiconductor Corp, East Greenwich, RI. (401) 885-3600.

1.9-GHz GaAs FET delivers 40W output. This partially matched L/S-band GaAs FET achieves an output power of 40W, allowing the use of a single GaAs FET in place of an MMIC device. The TPM1919-40 operates at a frequency of 1.9 GHz and operates in cellular telephone base stations. Power-added efficiency is typically 47%. The device costs $490 (500). Toshiba America Electronic Components Inc, Irvine, CA. (800) 879-4963.

Laser-programmable array tops 200,000 gates. The CX2000 family of LPGAs gives you >200,000 usable gates, plus as many as 128 kbits of configurable SRAM/ROM. Fabricated in a 0.6-µm three-layer metal CMOS process, the LPGA family features a PCI-bus interface, 3.3/5.0V mixed-mode I/O, and 200-MHz cycle performance at 5V. CX2000 devices deliver flip-flop clock-to-output speeds of 1.2 nsec and consume 3 µW/MHz/gate. Initial family members offer 30,000, 50,000, 100,000, and 200,000 usable gates. A typical 80,000 usable gate-array device costs approximately $20 (high volume). Chip Express Corp, Santa Clara, CA. (408) 988 2445.

Universal-logic ICs re-place Fast Mach 200 FPGAs. The vendor can convert any device in the Fast Mach series of 10-nsec FPGAs into a lower cost universal logic circuit (ULC). ULC products include no NRE charges. The company fabricates the ICs with UG sea-of-gates, 0.6mm SCMOS technology. The ULCs come in various PLCC and PQFP configurations. It typically takes six weeks to convert a Mach 220-10 to a ULC, from the time you submit the data to shipping the prototype. Devices cost $5.32 (OEM). Temic Semiconductors, Santa Clara, CA. (800) 554-5565, ext 93.

PCI-compliant FPGA drives high output. A version of the 4000-usable-gate pASIC 1 device, the QL16x24BH, combines the performance of the QuickLogic FPGA with PCI-compliant, high-current outputs. The high-output drive of the I/O pins (24 or 16 mA, depending on speed) enables the QL16x24BH to serve as a bus-interface device for a variety of buses and bridges, including VME, ISA, and PCI. The part comes in four speeds. Packaging options include 84-pin PLCCs, 100-pin TQFPs, and 144-pin TQFPs. A PLCC version costs $25.15 (1000). QuickLogic Corp, Santa Clara, CA. (408) 987-2000.

Linear amplifiers give frequency coverage as high as 1 GHz. For applications requiring an output power as high as 25W, LZY linear power amplifiers cover a frequency range of 500 to 1000 MHz and provide AM, FM, and pulse operation. The LZY-1 operates from 20 to 512 MHz with a gain of 42 dB typical, and the LZY-2 spans 500 to 1000 MHz and has a gain of 43 dB typical. Both units come with an integral fan and heat-sink assembly and protect against RF-input overdrive, thermal overload, and reverse polarity. The LZY-1 and -2 cost $1995 and $2195, respectively. Mini-Circuits, Brooklyn, NY. (718) 934-4500.

10/100BaseTX transceiver comes in TQFP. The QS6611, an all-CMOS 10/100BaseTX fast Ethernet transceiver, comes in a 64-pin 1031031.0-mm TQFP for use in PCI or CardBus adapter cards. Using an ad hoc standard Symbol data interface, the QS6611 provides a glueless connection to media access and repeater controller ICs. Both 10BaseT and 100BaseTX operations include on-chip filtering and wave shaping, along with adaptive equalization, 10/100 switching, and clock generation and recovery. The QS6611 costs $16.65 in the TQFP (10,000). Quality Semiconductor Inc, Santa Clara, CA. (408) 450-8080.

Monolithic dc/dc converter houses dual-power MOSFETs. The EL7560C single-chip synchronous dc/dc converter integrates PWM control logic with two 12.4A, continuous-rated power MOSFETs in a single 28-pin SOIC package. The MonoPower IC's output voltage complies with the Pentium Pro CPU's 4-bit handshake for programming a voltage from 2.1 to 3.5V. The EL7560C contains several internal protection circuits, including soft-start to protect the CPU from power-on voltage transients. Prices start at $10.67 (1000). Elantec Inc, Milpitas, CA. (408) 945-1323.

Comparator with reference draws 2.8 µA. A family of comparators keeps quiescent current as low as 2.8 µA, suitable for low-battery detection in notebook computers. The LTC1440 and LTC1441 are single and dual comparators, respectively, with an on-chip reference of 1.182V ±1% and hysteresis adjustable to as much as 100 mV. The LTC1441 dual comparator has no reference. The LTC1440 typically draws 2.8 µA and is guaranteed to draw <4.7 µA over the industrial-temperature range. The dual versions draw 3.5 µA typical and 5.7 µA maximum. The parts come in eight-pin DIP and SO packages and cost $2.25 each (1000). Linear Technology Corp, Milpitas, CA. (408) 432-1900.

Front-end ADCs achieve high resolution. When supervised by a system processor, the TC510 and TC514 analog front ends perform dual-slope A/D conversion with resolutions as high as 17 bits plus sign. The TC510 is a single-channel converter; the TC514 adds a four-input, differential, analog multiplexer to the basic TC510 design. A 5V supply powers the devices, which accept differential and bipolar input signals and consume <20 mW of power. The DIP and SOIC versions of the TC510 cost $3 and $3.20, respectively (1000). The same configurations of the TC514 cost $3.50 and $3.70 (1000). Telcom Semiconductor Inc, Mountain View, CA. (415) 968-9241.

Quad Ethernet transceiver carries its own filters. The CS8904, a four-port 10BaseT Ethernet interface, incorporates on-chip, fifth-order, Butterworth, continuous-time filters, eliminating the need for external filters and reducing board space. Each of the device's four independent transceivers operate at half- and full-duplex Ethernet and include autonegotiation and integral Manchester encoders/ decoders. The CS8904 comes in a 100-pin plastic QFP and in 3.3 and 5V versions. The device costs $14 (10,000). Crystal Semiconductor Corp, Austin, TX. (512) 912-3114.

RF front-end ICs meet analog-cellular standards. Two RF front-end ICs, one with an on-chip VCO, incorporate a low-noise amplifier having a gain of 15 dB, a noise figure of 1.7 dB, and an IP3 of –7 dBm. The mixers use a current-combination circuit resulting in a higher gain of 8.4 dB and IP3 figures of 6.5 dBm (SA611) and 4.5 dBm (SA621). The SA621, with its integrated oscillator, easily meets the AMPS analog-cellular and TDMA digital specifications with an external resonator or a stripline. For 3V designs, the SA621 and SA611 draw about 13.3 and 8 mA, respectively. The SA611 costs $2.50; the SA621, $2.80 (>10,000). Philips Semiconductors, Sunnyvale, CA. (408) 991-2000.

12-bit sampling ADC sports four-channel multiplexer. The ADS7824 monolithic, 12-bit sampling A/D converter comes with a four-channel multiplexer, sample/hold, reference, clock, and parallel/serial µP interface. You can configure the ADS7824 in a continuous-conversion mode to sequentially digitize all four channels. The device ac-quires and converts 12 bits to within ±0.5 LSB in 25 µsec and consumes 50 mW. Packaging options include 28-pin DIP and 28-lead SOIC configurations. Prices start at $12.30 (1000). Burr-Brown Corp, Tucson, AZ. (520) 746-1111.

Flash-memory IC has on-chip IDE controller. IDE FlashChip combines as much as 4 Mbytes of flash memory and an IDE controller in a 144-pin TQFP, creating a single-chip, solid-state, IDE disk drive. The device offers small electronic products a rugged, ultracompact storage system that operates in all read/write modes from a single 3.3 or 5V supply. When you use the chip in IDE mode, it requires no separate controller in the host. Offered in 2- and 4-Mbyte versions, the device costs $53 and $75, respectively (OEM). SanDisk Corp, Santa Clara, CA. (408) 562-0500.

IR chip family transfers 4 Mbps. Three IrDA-compatible chips—one IR controller that functions as a dedicated processor and two IR transceivers—send and receive data at up to 4 Mbps. The 31TI1502 communications controller comes in a 100-pin QFP and works with IBM and other IrDA vendors' transceivers. The 31TI1100 fits an analog transceiver ASIC, LED, and photodiode into a package that is 13 mm long and 5.45 mm wide. The SOIC-configured 31TI1101 is suitable for battery-powered and mobile products, where compactness and low power consumption are key requirements. Respective prices for the 31TI1502, 31TI1100, and 31TI1101 are $7.99, $5, and $5 (100,000). IBM Microelectronics, Hopewell Junction, NY. (800) 769-3772.

Chip set controls four stepper motors. Using high-speed pulse and direction outputs, the MC1451A motion processor simultaneously controls as many as four stepper motors. An optional third IC provides encoder feedback for each axis and maintains encoder position to a resolution of 32 bits. This advanced version of the earlier MC1451 adds on-the-fly stall detection using an external encoder. The MC1451A comes in one-, two-, and four-axis configurations. The chip comes in two 68-pin PLCCs, with an optional 44-pin PLCC for encoder feedback. A four-axis chip set costs $99 and $129 with encoder feedback (1000). Performance Motion Devices Inc, Concord, MA. (508) 369-3302.

Flyback power converters switch 3A. Joining the Simple Switcher power-converter family, two 3A flyback ICs offer an increased operating frequency of 100 kHz, enabling the use of smaller external magnetics and capacitors. Both the LM2585 and LM2586 come in adjustable, 3.3, 5, and 12V output versions. Additionally, the LM2586 allows synchronization of multiple devices to a common frequency to simplify EMI filtering. The LM2586 also has an on/off pin for external turn-off, reducing quiescent current to 60 µA. Packaging options include TO-220 and TO-263. Prices start at $4.20 for the LM2585 and $4.50 for the LM2586 (1000). National Semiconductor Corp, Santa Clara, CA. (800) 272-9959.

Pressure sensor sports eight-pin SOIC package. The NPP series of pressure sensors in plastic SOIC-8 packages comes in measurement ranges of 0 to 15, 0 to 30, and 0 to 100 psi. The family targets high-volume OEM applications that require compactness and mild corrosive-media isolation. The silicon, piezoresistive pressure die is gel-coated for protection against dust and humidity. NPP sensors develop an unamplified full-scale output of 60 ±20 mV with 3V-dc excitation and a combined linearity hysteresis and repeatability error of <±0.3% full-scale output. The devices cost <$3 (OEM). Lucas Novasensor, Fremont, CA. (501) 661-6000.

Single-gate logic devices save space, enhance ASICs. Comprising 13 members, the MicroGate family of single-gate logic devices each comes in a five-pin SOT package. MicroGate logic lets you place a gate function close to related circuitry, shortening the routes on a board. Fabricated in Advanced HCMOS (AHC), the devices run at three times the speed and one-half the static-power consumption of HCMOS. The AHC MicroGate devices work with 3.3 or 5V supplies. Suggested resale price for these parts is $0.28 (3000). Texas Instruments Inc, Denver, CO. (800) 477-8924, ext 4500.

Switches bring power to PCMCIA cards. Two power-interface switches distribute 3.3, 5, and 12V to PC Cards that connect to desktop and portable computers, PDAs, and other equipment. The TPS2205I has a parallel control interface that works with industry-standard controllers, and the TPS2206I offers a serial control interface that is compatible with CardBus controllers. Both devices switch VCC and VPP for a dual-slot PC Card interface. The TPS2205I and TPS2206I come in 30-pin SSOPs and cost $3.61 and $3.87, respectively (1000). Texas Instruments Inc, Denver, CO. (800) 477-8924, ext 4500.

Buck converter delivers tight regulation for high-end µPs. The Si9140CY buck converter combines a 5-msec transient recovery time with sharply reduced requirements for output capacitance. With a 100-kHz feedback bandwidth, the Si9140CY regulates to within a ±70-mV, or ±2.25%, margin, well within the ±0.145V (or ±5%) range Intel specifies for the Pentium processor. You can reduce the needed output capacitance by at least one-half that of competitive products. The Si9140CY comes in a 16-pin SOIC package and costs $1.75 (100,000). Temic Semiconductors, Santa Clara, CA. (800) 554-5565, ext 92.

Telecomm ICs meld dual solid-state relays and optocoupler. OptoMOS integrated switches, comprising two solid-state relays and a bidirectional optocoupler in a 16-pin SOIC package, replace three or four components to save space in telecommunications applications. The IAA110P, IAB110P, and IBB110P offer two Form A, two Form B, and one Form A/1 Form B configurations. You can use the dual relays for hook-switch, dial-pulse, or loop-start switching, and the optocoupler detects ringing signals or loop current. The devices cost $3.97 (10,000). CP Clare Corp, Semiconductor Group, Lexington, MA. (847) 797-7000.

Quad high-side power switch delivers 1A/ switch. Replacing as many as four high-side drivers and MOSFETs in a variety of low-voltage applications, the MIC2507 quad power switch incorporates TTL-compatible inputs, charge pumps, and protected n-channel MOSFETs with switch resistances as low as 120 mV in a single 14-pin DIP or SOIC. The device's four independent switches handle voltages of 2.7 to 7.5V and deliver 1A continuous output current. Protection circuitry includes current limiting, thermal shutdown, and open-load detection. The MIC2507 costs $1.84 (1000). Micrel Semiconductor Inc, San Jose, CA. (408) 944-0800.

RS-232C transceivers meet European EMC requirements. The ADM2xxE family of 5V RS-232C and V.28 interface transceivers provides ±15 kV of ESD protection and ±2 kV of electrical fast transient protection. All five devices offer low EMI emissions in accordance with EN55022 and comply with IEC-1000-4-x immunity standards. The components guarantee data transmission rates of 230 kbps and have a power consumption of 17 mW. Prices start at $1.40 (1000). Analog Devices Inc, Wilmington, MA. (617) 937-1428.

Pressure sensors come in board-mount DIPs. This family of silicon-based pressure sensors covers ultralow measurement ranges from 0 to 0.3 psi and ranges as high as 0 to 100 psi. The SM5600 series comes in eight-pin DIPs and offers constant-current and -voltage versions in gauge, absolute, and differential configurations. Each sensor includes calibration and temperature compensation over a range of 0 to 608C. Prices range from $8.95 to $10.75 (10,000). Silicon Microstructures Inc, Fremont, CA. (510) 668-7000.

Dual-mode RF power amplifier delivers 0.25W. For use in the RF-transmitter section of AMPS mobile phones, the TQ9147 power-amplifier IC provides two stages of amplification and 31.5 dBm (0.25W) of output power at a typical power-added efficiency of 65%. The part, which operates over a frequency range of 824 to 849 MHz, requires minimal external circuitry for matching or bias. The input is matched to 50V; the output is matched with a simple network. The TQ9147 requires a power supply of 2.7 to 6V and comes in a 16-pin SO package. The device costs $3.25 (100,000). Triquint Semiconductor Inc, Beaverton, OR. (503) 644-3535.

DSP histogrammer IC sharpens video imaging. The LF48410 DSP chip uses a 1024324-bit memory array to facilitate histograms of images as large as 4k34k bits with a 10-bit pixel resolution at clock rates as high as 40 MHz. In addition to generating histograms and cumulative-distribution functions, the device also serves as a look-up table, bin accumulator, delay memory, and single-port RAM. When operating in the delay-memory mode, the LF4810 buffers video lines as long as 1029 pixels. Fabricated in 0.6-mm CMOS, the LF48410 comes in both commercial and MIL-STD-883 Class B versions. Prices start at $40.57 (1000). Logic De-vices Inc, Sunnyvale, CA. (408) 737-3300.

Chip turns to PCI bus for high-quality video editing. A PCI-bus controller lets you build studio-quality video-editing boards for desktop computers at consumer-level prices. The ZR36057 controller works with the ZR36050 and ZR36016 JPEG chip set to provide complete video editing. To reduce the time to market, the JPEG suMMit reference-design board en- ables quick application of these chips. The chip also comes with Video for Windows software drivers for Windows 3.1 and 95, a set of schematics, and a database for pc-board manufacturing. With the reference kit, you can create a video-recording, -playback, and -editing system with a bill-of-materials cost of $165. Zoran Corp, Santa Clara. (408) 986-1314.

Voice processors include caller ID. Three RISC-based digital voice processors provide caller ID and full-duplex speaker-phone functions, along with digital voice recording, storage, and playback. Processors in the NSAM266 family include a serial flash-memory interface, enabling them to store as much as two hours of voice data in two 8-Mbit flash devices using a 4.8-kbps CELP-based algorithm. The vendor's International Vocabulary Support software tools simplify the creation of voice prompts in English, Japanese, French, Spanish, and Mandarin. Packaging options include 68-lead PLCCs and 100-lead PQFPs, with prices starting at $7.15 (100,000). National Semiconductor Corp, Santa Clara, CA. (800) 272-9959.

Graphic chip speeds 3-D operations. The OTI-64217 Eon 64-bit graphics controller is one of the first EDO/SGRAM 2-D graphics devices to provide acceleration for the Microsoft Direct3D specification. Eon combines host-based rendering with a dedicated graphics-hardware pipeline to accelerate the transfer of images from system memory to the graphics display. This approach reduces the cost and complexity of the chip and provides as much as a 200% speed increase in Direct3D applications over standard GUI accelerators. Eon simultaneously displays two live-video windows and two prerecorded source windows. Its 170-MHz RAMDAC handles resolutions of 10243768 pixels at refresh rates >100 Hz. It comes in a 256-pin BGA and costs $19 (10,000). Oak Technology Inc, Sunnyvale, CA. (408) 737-0888.