SaRonix clocks WLAN improvements

SaRonix, a maker of frequency control products for wireless networks, has introduced what it says is the market’s smallest crystal clock oscillators designed for wireless LAN networking equipment, such as access points and enterprise gear.

The Menlo Park, Calif., company’s S1633 and S1634 series oscillators feature tight frequency stability and low power consumption, contained within a small 3.2x5mm ceramic package. Optimized for IEEE 802.11a/b/g wireless access points and WLAN enterprise networking equipment, these oscillators retain the performance of larger models while offering economic space-saving and power-saving benefits at 40, 44, and 48 Mhz.

"A basic challenge to miniaturizing oscillators is retaining the key properties of quartz, including frequency stability," said Brandon Ogilvie, marketing manager for SaRonix, in a company statement. "In WLAN applications, maintaining ±25ppm stability over all operating conditions is critical for ensuring reliable frequency synthesis by the WiFi IEEE 802.11-compliant radio transceiver and baseband/MAC chipsets."

The S1633 and S1634 series feature precise output performance and low power consumption for fixed and portable wireless networking equipment. The output logic is LVCMOS/LVTTL compatible and achieves 45%/55% symmetry or better. Frequencies are available in the range of 40 to 60 MHz with stabilities of ±25ppm and ±50ppm, inclusive of all operating conditions including first year of aging, load fluctuations, initial calibration at 25°C, -20°C to +70°C temperature range, and shock and vibration.

The S1633 series operates with 3.3V supply while the S1634 features additional power-savings by operating with 2.5V supply. Each model consumes less than 10mA in regular operating mode, however both series offer a low power stand-by mode thereby reducing power consumption by 99.9%.

The S1633 and S1634 series are now available for sampling and prototype builds, with mass production quantities available later this year. Output frequencies are compatible with IEEE 802.11a/b/g, including 40 MHz, 44 MHz, and 48 MHz.