048-049_EETE-VF

EETE SEPT 2013

Consumer GPS/GNSS receiver supports 50Hz update rates SkyTraq Technology has introduced what the company claims to be the fastest consumer grade S1216F8 GPS receiver module, supporting GPS, QZSS, WAAS, EGNOS, MSAS, and GAGAN satellite signal reception with a 50Hz update rate. The S1216F8 receiver is based on SkyTraq’s newest 55nm Venus 8 GPS/ GNSS chipset. The Venus 8 incorporates an IEEE-754 compliant FPU. With RISC/FPU running at 100MHz, the S1216F8 GPS receiver module ensures very fast and accurate positioning/ speed response suitable for UAV, RC plane flight logging, and high-performance race car or speed boat data logging applications. When running at lower 1Hz, 5Hz, or 10Hz update rates, the S1216F8 receiver can be used as a typical GPS receiver module currently available on the market. The device measures 12x16mm, consumes 26mA at 3.3V during continuous navigation at 50Hz update rate. SkyTraq www.skytraq.com.tw 4 to 10GHz driver amplifier delivers 20dB of gain Custom MMIC has added the CMD191C4 to its growing MMIC library of standard products. The GaAs MMIC driver amplifier housed in a leadless, RoHs compliant 4x4 mm surface mount package offers high output power and low current consumption. Well suited for complex communications systems where small size and high linearity are needed, the device operates from 4 to 10GHz and delivers 20dB of gain with a corresponding output 1dB compression point of greater than +21dBm. It is a 50 ohm matched design, which eliminates the need for external DC blocks and RF port matching. The CMD191C4 is biased with a single 5.0 V positive drain supply. RF power can be applied at any time. Suitable applications include WiLAN, C and X Band communications systems, and military end-use. Custom MMIC www.CustomMMIC.com Ultra-miniature crystal oscillator is only 0.5mm high IQD Frequency Products has launched one of the world’s smallest quartz crystals measuring just 2.0x1.6mm with a height of only 0.5mm. The IQXC-42 ultra-miniature model is especially suitable for many portable applications such as hand held inventory control devices, battery powered telemetry equipment, notebook computers and surveillance devices. The IQXC-42 crystal is available in frequencies between 20MHz and 50MHz and operates over the full industrial temperature range of -40 to +85C. Frequency stabilities can be specified as low as ±10ppm over the commercial temperature ranges. In line with the requirements of the latest generation of microprocessors the load capacitance can be as low as 8pF. Housed in a 4-pad ceramic package with a hermetically sealed metal lid which helps to minimise the EMI radiation, the product is designed to able to withstand shock levels of up to 1000G in accordance with IEC 60068-2-27. The IQXC-42 is available on tape and reel for automatic assembly as well as loose in bulk pack for low volume prototypes. IQD Frequency Products www.iqd.com Programmable system timers draw only 30nA The programmable system timers TPL5000 with watchdog timer and TPL5100 with MOS driver draw only 30nA of current, a reduction of 90% compared to competitive solutions says manufacturer Texas Instruments. They also replace a microcontroller’s internal timer, allowing the MCU to remain in lowpower sleep mode. These so-called nano timers address a wide range of battery-powered and energy harvesting systems where the main system is in sleep mode or power-down mode most of the time. By drawing much lower current than an MCU timer, the TPL5000 and TPL5100 greatly reduce power consumption and extend the operating life of these systems. The devices feature programmable timer intervals with a selectable timing delay that can be set from one to 64 seconds for the TPL5000. It can be programmed for 16- to 1,024-second intervals in energy harvesters, wireless sensor nodes and dataloggers, where measurement data changes slowly. The TPL5000 and TPL5100 are available today in 10-pin, 3x5mm VSSOP packages. Texas Instruments www.ti.com 48 Electronic Engineering Times Europe September 2013 www.electronics-eetimes.com


EETE SEPT 2013
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