Datasheet LTC6930-X.XX (Analog Devices)

LTC6930-X.XX 32.768kHz to 8.192MHz Precision µPower Oscillators
FeaTures DescripTion
n
Frequency Error <0.09% Max at 25°C
The LTC®6930 series is a family of very low power precision n
Start-Up Time <110µs at All Frequencies
silicon oscillators with a frequency error less than 0.09%. n
1.7V to 5.5V Single Supply Operation
For each oscillator, the user can select one of 8 frequen- n
105µA Typical Supply Current at 32kHz, V+ = 3V
cies between 32.768kHz and 8.192MHz. Based on a fixed n 490µA Typical Supply Current at 8MHz, V+ = 3V master oscillator frequency, internal frequency dividers n Typical RMS Period Jitter <0.15% at V+ = 3V between 1 and 128 provide the 8 different frequencies. n No External Components to Set Frequency The LTC6930 requires no external components other than n 5 Options Cover 32.768kHz to 8.192MHz: power supply bypass capacitors. Requiring only a single LTC6930-4.19: 4.194304MHz ÷ N 1.7V to 5.5V supply enables operation from a single Li-Ion LTC6930-5.00: 5.000000MHz ÷ N cell or 2 AA alkaline cells. LTC6930-7.37: 7.372800MHz ÷ N The LTC6930 features a proprietary control architecture LTC6930-8.00: 8.000000MHz ÷ N that allows for ultralow power operation while maintaining LTC6930-8.19: 8.192000MHz ÷ N industry leading accuracy and jitter specifications. The Where N = 1, 2, 4, 8, 16, 32, 64, 128 exceptionally fast start-up time, combined with the low (N Determined by State of DIVA, DIVB, DIVC Pins) power consumption, is ideal for battery operated applica- n –55°C to 125°C Operating Temperature Range tions with frequent power-up cycles. n Tiny 2mm  3mm DFN or MS8 Package Any frequency from 32.768kHz to 8.192MHz can be pro-
applicaTions
vided by the factory. Minimum order sizes apply for custom frequencies. Please consult LTC Marketing for details. n L Digitally Controlled Oscillator , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property n Microprocessor Clock of their respective owners. Protected by U.S. Patents, including 6342817, 6614313. n Power Supply Clock n Portable and Battery Operated Devices
Typical applicaTion 4MHz Micropower Clock Generator Typical Frequency Error Distribution
70 V+ = 1.7V TO 5.5V TA = 25°C IS = 325µA AT 3VDC V+ = 3V 60 DIV = 0 1045 UNITS 0.1µF 50 V+ V+ 40 DIVA OUT UNITS LTC6930-8.00 4MHz 30 DIVB 20 DIVC 10 GND GND 0 –0.10 –0.05 0 0.05 0.10 6930 TA01a FREQUENCY ERROR (%) 6930 TA01b 6930fe For more information www.linear.com/LTC6930 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information AC Electrical Characteristics DC Electrical Characteristics Timing Characteristics Pin Functions Applications Information Package Description Revision History Related Parts