LTC6907 Micropower, 40kHz to 4MHz Resistor Set Oscillator in SOT-23 UFEATURESDESCRIPTIO ■ Supply Current: 36 µ A at 400kHz The LTC®6907 is a precision programmable oscillator that ■ 1% Frequency Accuracy (from 0 ° C to 70 ° C) is versatile, compact and easy to use. Micropower opera- ■ Frequency Range: 40kHz to 4MHz tion benefits portable and battery-powered equipment. At ■ One Resistor Sets the Oscillator Frequency 400kHz, the LTC6907 consumes 36µA on a 3V supply. ■ –40°C to 125°C Operating Temperature Range A single resistor programs the oscillator frequency over a ■ Start-Up Time Under 200µs at 4MHz 10:1 range with better than 0.65% initial accuracy. The ■ First Cycle After Power-Up is Accurate output frequency can be divided by 1, 3 or 10 to span a ■ 150Ω CMOS Output Driver 100:1 total frequency range, 40kHz to 4MHz. ■ Low Profile (1mm) SOT-23 (ThinSOTTM) Package U The LTC6907 is easily programmed according to this APPLICATIO S simple formula: + ■ Low Cost Precision Programmable Oscillator ⎧10,DIV Pin = V 4MHz ⎛ k 50 ⎞ ⎪ ■ Rugged, Compact Micropower Replacement for ƒOUT = • , N ⎨3, DIV Pin = Open Crystal and Ceramic Oscillators N ⎝⎜ RSET ⎠⎟ = ⎪⎩1, DIVPin=GND ■ High Shock and Vibration Environments ■ Portable and Battery-Powered Equipment The LTC6907 is available in the 6-lead SOT-23 (ThinSOT) ■ PDAs and Cellular Phones package. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. Contact LTC Marketing for a version of the part with a All other trademarks are the property of their respective owners. shutdown feature or lower frequency operation. UTYPICAL APPLICATIOMicropower Clock GeneratorTypical Supply Current vs Frequency LTC6907 40kHz TO 4MHz 1000 CLOAD = 5pF 3V TO 3.6V V+ OUT T = 25°C 0.1µF GND GRD 3.3V, –1 : ÷10 µA) ÷3 DIV SET 3.3V, –3 : R ÷1 SET 3.3V, –10 : 50k TO 500k 100 6907 TA01 SUPPLY CURRENT ( 1010 100 1000 10000 OUTPUT FREQUENCY (kHz) 6907 TA02 6907fa 1
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