32.768kHz to 8.192MHz Precision µPower Oscillators

The LTC6930 series is a family of very low power precision silicon oscillators with a frequency error less than 0.09%. For each oscillator, the user can select one of 8 frequencies between 32.768kHz and 8.192MHz. Based on a fixed master oscillator frequency, internal frequency dividers between 1 and 128 provide the 8 different frequencies. The LTC6930 requires no external components other than power supply bypass capacitors. Requiring only a single 1.7V to 5.5V supply enables operation from a single Li-Ion cell or 2 AA alkaline cells.

The LTC6930 features a proprietary control architecture that allows for ultralow power operation while maintaining industry leading accuracy and jitter specifications. The exceptionally fast start-up time, combined with the low power consumption, is ideal for battery operated applications with frequent power-up cycles.

Any frequency from 32.768kHz to 8.192MHz can be provided by the factory. Minimum order sizes apply for custom frequencies.

Applications

* Digitally Controlled Oscillator

* Microprocessor Clock

* Power Supply Clock

* Portable and Battery Operated Devices

* Frequency Error <0.09% Max at 25°C

* Start-Up Time <110μs at All Frequencies

* 1.7V to 5.5V Single Supply Operation

* 105μA Typical Supply Current at 32kHz, V+ = 3V

* 490μA Typical Supply Current at 8MHz, V+ = 3V

* Typical RMS Period Jitter <0.15% at V+ = 3V

* No External Components to Set Frequency

* 5 Options Cover 32.768kHz to 8.192MHz:

* LTC6930-4.19: 4.194304MHz ÷ N

* LTC6930-5.00: 5.000000MHz ÷ N

* LTC6930-7.37: 7.372800MHz ÷ N

* LTC6930-8.00: 8.000000MHz ÷ N

* LTC6930-8.19: 8.192000MHz ÷ N

* Where N = 1, 2, 4, 8, 16, 32, 64, 128

* (N Determined by State of DIVA, DIVB, DIVC Pins)

* –55°C to 125°C Operating Temperature Range

* Tiny 2mm x 3mm DFN or MS8 Package