Milpitas, Calif. Linear Technology has introduced a family of low-power precision silicon oscillators with fixed frequencies from 32.768 kHz to 8.192 MHz and 99.91% accuracy. The LTC6930 family is available in five versions, each with a unique master frequency and digitally controlled frequency dividers that provide eight different frequencies per device. Frequency shifting is accomplished within a single clock cycle and without glitches, providing a tool for system configuration or power management through clock-speed control.
The LTC6930 family is said to offer significant advantages in battery and portable applications. Drawing only 105 uA at 32 kHz and requiring only a single 1.7-V to 5.5-V supply, the LTC6930 can operate from two unregulated NiCad batteries. Battery life is also extended, using the fast startup, where minimal power is lost during the clock power-up. Most oscillators exhibit a startup time greater than a millisecond, however, the LTC6930 offers a guaranteed startup time of less than 110 us, Linear said.
The 0.09% frequency tolerance makes the LTC6930 suitable for many applications, including serial port communications and microprocessor clocks. The LTC6930 is fully specified for operation from -40°C to 125°C and offers reliable operation in environments unsuitable for crystal-based oscillators. These parts are available in a 2 x 3-mm DFN and an 8-lead MSOP package.
Pricing: Starts at $1.31 each in quantities of 1,000.
Availability: All versions are in full production.
Product information: LTC6930
Linear Technology , www.linear.com