Datasheet LTC6907 (Analog Devices)

LTC6907 Micropower, 40kHz to 4MHz Resistor Set Oscillator in SOT-23
U FEATURES DESCRIPTIO
■
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.
U TYPICAL APPLICATIO Micropower Clock Generator Typical 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