Integrated Circuits: December 7, 1995

Multimedia chips perform multistandard video decoding and NTSC encoding. The KS0122 multistandard video decoder integrates the functions of the company’s KS0116 genlock digitizer and the KS0117 National TV Systems Committee (NTSC) decoder. It accepts NTSC and phase-alternation-line (PAL) standard TV formats with auto detection and supports either square-pixel or Consultative Committee, International Radio (CCIR) 601 output rates with YCbCr or RGB. The device comes in a 100-pin PQFP and costs $19 (1000). The KS0119 combines a digital NTSC encoder and basic RAMDAC functions to create a display driver for producing digitized video or computer-generated graphic images on analog NTSC TV or PC monitors. The device comes in an 80-pin PQFP and costs $12 (1000). Samsung Semiconductor Inc, San Jose, CA. (408) 954-7000.

Photodiode/amplifier IC has selective red and IR response. The OPT-101-R comes in red molded plastic to provide optical filtering. The package provides selective response to wavelengths >570 nm, making it suitable for applications using red or IR illumination. The device combines a photodiode, a transimpedance amplifier, and a 1-M[ohm] feedback resistor in a monolithic IC. The device works in applications such as smoke detectors, position and proximity sensors, and medical and laboratory instrumentation. It draws 120 µA from a 2.7 to 36V supply. It can also operate from dual supplies. A 7.5-mV-output pedestal voltage provides linear operation down to zero light with a single supply. The device is available in an eight-pin DIP and a five-pin- vertical SIP. $2.55 (1000). Burr-Brown Corp, Tucson, AZ. (602) 746-1111.

High-voltage converter chip for fluorescent-backlight applications. The ML4877 converts battery voltages of 5 to 25 up to 2000 in a sinusoidal waveform suitable for driving miniature cold-cathode-fluorescent lamps. The chip’s architecture eliminates the risk of short-circuit fires and uses circuits that prevent overvoltages, simplifying UL approval. The device also has a differential-drive configuration that halves the voltage across parasitic capacitance in the fluorescent lamp, reducing power consumption. The chip is available in a 20-pin SSOP and costs $4.40 (1000). Micro Linear Corp, San Jose, CA. (408) 433-5200.

IC integrates functions for 155-Mbps ATM. A PM7375 LASAR-155 (local-asynchronous-transfer-mode segmentation-and-reassembly) IC performs all primary ATM network-interface-card functions. The device simplifies an ATM-card design into one major IC plus an optical data link or twisted-pair interface. It combines the functions of the ATM physical layer, adaptation-layer (AAL5), segmentation and reassembly (SAR) engine, parameter-control RAM, PCI bus interface, and a DMA controller. The device comes in a 208-pin PQFP and costs $125 (OEM). PMC-Sierra Inc, Burnaby, BC, Canada. (604) 668-7300.

100-kHz switching regulator handles 15W. Combining a 1.25A switch and a 1A Schottky catch diode in a single 16-lead SOIC package, the LT1572 switching regulator delivers up to 15W of power. The 100-kHz device operates with input supplies from 3 to 30V and draws just 6 mA of quiescent current (50 µA in shutdown mode). It can be used in all standard switching configurations, including boost, buck, and SEPIC (where the input is greater or less than the output). The IC costs $4 (1000). Linear Technology Corp, Milpitas, CA. (408) 432-1900.

I/Q modem ICs suit wireless communications. Two RF ICs, the U2797B I/Q modulator and the U2794B I/Q demodulator, reduce component count in digital cellular and cordless phones. The U2797B has a frequency range of 100 to 1000 MHz and a baseband input impedance of 100 kW. The device comes in a space-saving, 20-pin SSOP. The U27-94B, also housed in a 20-pin SSOP, operates over radio frequencies of 50 to 1000 MHz and over local oscillator frequencies of 70 to 1000 MHz. In addition to wireless applications, the devices can be used in hybrid-fiber-coax systems. The U2797B costs $4.20, and the U2794B costs $4.40 (100,000). Temic Telefunken Microelectronic GmbH, Heilbronn, Germany. ( +71 31) 67-29 45.

18-bit DAC guarantees 2-nV/sec output glitch. Built with integral deglitching circuitry, the MN3390 DAC provides 18-bit resolution, 17-bit monotonicity, and maximum output glitch of 2 nV/sec. These specifications, combined with a 200-kHz update rate and ±0.00075% FSR integral linearity error, make the part useful for nuclear magnetic resonance imaging. The converter comes in a 32-pin DIP and operates from ±15 and +5V supplies. Power consumption is <1w. The MN3390 costs $263 (1000). Micro Networks Corp, Worcester, MA. (508) 852-5400.

RS-232C driver-receiver is ESD-protected to ±15 kV. Two RS-232C driver-receiver ICs protect their transmitter outputs and receiver inputs against electrostatic-discharge (ESD) shocks of ±15 kV without latch-up. Both the MAX1488E driver and MAX1489E receiver have a guaranteed data rate of 120 kbps and are designed for EIA/TIA-232, EIA/TIA-562, and CCITT V.28 communications. The MAX1488E has a supply current of <180 µA over a ±4.5 to ±13.2V supply range. The MAX1489E’s typical supply current is 350 µA. Housing options include 14-pin DIP and SOIC packages. Prices start at $0.95 (1000). Maxim Integrated Products, Sunnyvale, CA. (408) 737-7600, ext 6087.

VCO operates from 1770 to 1915 MHz. A voltage-controlled oscillator (VCO) for Digital European Cordless Telecommunications-based stations generates frequencies between 1770 and 1915 MHz to within 1.5 to 12V of the control voltage. The V605ME02 also exhibits an average gain of 25 MHz/V over the 145-MHz bandwidth. The device operates from a 8V dc nominal supply and draws <25 mA. It comes in a surface-mount mini package that is 0.50×0.50×0.20 in. The device sells for $15 (1000). Z-Communications Inc, San Diego, CA. (619) 621-2700.

CCD sensor-processor converts 2.5 million pixels/sec. Compatible with gray-scale and color CCD sensors, the LM9800 processor offers 8-bit resolution and operates at a 2.5-million-pixel/sec conversion rate. The device removes errors from and digitizes a linear CCD pixel stream and generates the necessary clock signals to drive the CCD. An internal configuration register sets CCD and sampling time to adapt to different sensors. In a 52-lead PLCC, the LM9800 costs $11.10 (1000). National Semiconductor Corp, Santa Clara, CA. (800) 272-9959.

Digital clock ICs reach 700 MHz. A line of digital clocks housed in standard metal DIPs ranges from 250 to 700 MHz. Providing outputs with a worst-case symmetry of 48 to 52%, the differential sine-wave clocks offer better symmetry than conventional ECL clocks. Typical period jitter is 15 psec p-p. Devices in the 250- to 450-MHz range cost <$24 per 1000, and clocks in the 450- to 700-MHz range are <$26 in like quantities. RF Monolithics Inc, Dallas, TX. (214) 233-2903.

16-bit ADC samples at 5 MHz. The ET1665, a 16-bit sampling ADC offers a dynamic range of 65,536 at sampling rates of up to 5 MHz. Differential nonlinearity is to within ±0.5 LSBs. Other specifications for the converter include an input bandwidth of 30 MHz for super-Nyquist operation, a spurious-free dynamic range of 110 dB, and a signal-to-noise ratio of 92 dB. The ET1665 comes in a metal case with dimensions of 3×4×0.4 in. and costs $1650 (100). Edge Technology Inc, Waltham, MA. (617) 899-7900.

2.7V SRAM targets portable communications. Organized as 32k×8 bits, the M5M5256C SRAM draws a maximum active current of 50 mA (35 mA typical) from a 2.7V supply. These specifications make the device suitable for wireless applications. Maximum standby current is 20 mA (10 mA typical). The 256-kbit CMOS device has an access time of 100 nsec and operates over commercial and industrial temperature ranges, from 0 to 70ºC and from –40 to +85ºC, respectively. Packaging options include 28-pin TSOP, SOP, or DIP. The commercial version costs $5.35 (1000). Mitsubishi Electronics America Inc, Sunnyvale, CA. (408) 730-5900.

Switching regulator IC delivers 60V at 1.25A. Operating over a wide input range of 3 to 60V, the CS-3972 switching regulator provides output voltages of up to 60V at 1.25A with a duty cycle of up to 50%. An on-chip oscillator running at a nominal frequency of 40 kHz sets the output-pulse frequency. With an external source, the switching frequency can be set between 50 and 70 kHz. Packaging options include DIP, TO-220, and D²PAK configurations. The CS-3972 costs $1.09 (10,000). Cherry Semiconductor Corp, East Greenwich, RI. (401) 885-3600.

Synchronous SRAMs combine density and speed for workstation CPUs. Suited for primary or secondary cache memory for SPARC, Pentium, and other RISC processors, a family of synchronous SRAMs integrates input registers, output registers, and self-timed write logic on a single chip. Devices include two TTL, one LVCMOS, and two GTL versions. The TTL parts, the CXK77910ATM/AYM and CXK77920TM/YM, operate at speeds of up to 100 MHz. The LVCMOS CXK77B3610 operates at 166 MHz, and the GTL CXK77B3611GB and CXK7-7B1810GB operate at up to 180 MHz. Access time at 180 MHz is 5.5 nsec and 6 nsec at 166 MHz. Prices start at $100 (100). Sony Electronics Inc, San Jose, CA. (408) 955-6572.

VGA controller takes 2.5V supply. Housed in a small 128-pin QFP, the SPC8104 VGA controller for handheld computers draws its power from a 2.5V supply. Operating at 24 MHz, the device consumes 18 mA when active and 0.3 mA in sleep mode. It offers three hardware- or software-initiated power-saving modes to extend the operating life of a rechargeable batteries for handheld systems. Although it supports various LCD panel sizes, the SPC8104 is optimized for 6403480-pixel single- and dual-panel monochrome displays. It costs $18 (10,000). S-MOS Systems Inc, San Jose, CA. (408) 922-0200.

Controller supports i960 embedded designs. The GT-32090 is a highly integrated system controller for the Intel i960JX family of 32-bit embedded RISC processors. The core-logic chip, which is housed in a 160-pin PQFP, includes a tightly coupled CPU interface, an 8- or 16-bit I/O bus, and controllers for DRAM, DMA, and two PCMCIA devices. It also comes with a device controller that supports up to 128 Mbytes of standard memory (flash, EPROM, and SRAM). The 5V GT-32090 costs $18.95 (10,000). Galileo Technology Inc, San Jose, CA. (408) 451-1400.

SRAM devices give quick access. Two speed-enhanced SRAM families, the 256-kbit M5M5257D/ M5M5258D/M5M5278D and the 1-Mbit M5M5100- 1B/M5M51004B, provide read-access times of 12 and 15 nsec, respectively. Devices in both families operate from 5V supplies, and the 256-kbit series also offers a 3.3V version. Maximum active current for the 3.3V part is 55 mA (50 mA typical). Device configurations include 256k×1, 64k×4, 32k×8, 1M×1, and 256k×4 bits with DIP, SOJ, SOP, and TSOP housing options. A 20-nsec, 256-kbit device costs $5.50 (1000), and a 25-nsec, 1-Mbit part costs $22 (1000). Mitsubishi Electronics America Inc, Sunnyvale, CA. (408) 730-5900.

SAR chip set aims at video servers. A 622-Mbps ATM segmentation-assembly-and-reassembly (SAR) chip set is intended for high-end server markets, including video servers. Providing a full-duplex function, the set comprises the TC35860 segmentation chip and the TC35861 reassembly chip. Each chip supports 32-kbit virtual channels and the ATM adaptation layer (AAL) 3, 4, 5, and partial AAL1 functions. The chip set, which comes in a 240-pin PQFP, costs $625 (1000). Toshiba America Electronic Components Inc, Irvine, CA. (800) 879-4963.

3.3V clock drivers serve Pentium and PowerPC systems. The S3LV3XX family of 3.3V clock drivers easily meets the timing requirements of Pentium and PowerPC systems with low output skew and 1.5-nsec rise and fall times at frequencies of up to 100 MHz. The devices come in 10-, 14-, and 20-output versions. The output driver sources a peak current of 24 mA, dropping to about 4 mA when the output reaches 0.8V. The dynamically adjusting output virtually eliminates ground bounce and its associated EMI. Prices range from $3 to $7 (10,000). Applied Micro Circuits Corp, San Diego, CA. (619) 450-9333.

PLD survives high-radiation space environments. The 22V10RP, a radiation-hardened PLD for satellite, spacecraft, and space-probe environments, has a total dose tolerance of 100 Krad(Si) for low-earth and geosynchronous orbits. It also survives single-event latchup in excess of 120 MeV/mg/cm². The device is fully compatible with existing 22V10 commercial devices. Packaging options include 24-pin DIP and flatpack styles with speed grades as low as 15-nsec. Production quantity prices start as low as $760. Space Electronics Inc, San Diego, CA. (619) 452-4167.

Battery charger has on-chip µC. The L6901 Super Smart Battery Charger for NiCd and NiMH batteries integrates an 8-bit ST6 mC core, 2 kbytes of EPROM, a dc/dc converter, and a 5V regulator on a single chip. Software-controlled charging enables the L6901 to implement optimal charging algorithms for a given battery type. The 60V power IC is fabricated using a 1.2-×m mixed bipolar-CMOS/ DMOS process. $5 (<1000). SGS-Thomson Microelectronics, Lincoln, MA. (617) 259-0300.