Micropower, 40kHz to 4MHz Resistor Set Oscillator in SOT-23

The LTC6907 is a precision programmable oscillator that is versatile, compact and easy to use. Micropower operation benefits portable and battery-powered equipment. At 400kHz, the LTC6907 consumes 36µA on a 3V supply.

A single resistor programs the oscillator frequency over a 10:1 range with better than 0.5% initial accuracy. The output frequency can be divided by 1, 3 or 10 to span a 100:1 total frequency range, 40kHz to 4MHz.

The LTC6907 is easily programmed according to this simple formula:

fout = 4MHz / N * (50k/Rset) N = {10 DIV Pin = V+, 3 DIV Pin = Open, 1 DIV Pin = GND}

The LTC6907 is available in the 6-lead SOT-23 (ThinSOT) package. Contact LTC Marketing for a version of the part with a shutdown feature or lower frequency operation.

Applications

* Low Cost Precision Programmable Oscillator

* Rugged, Compact Micropower Replacement for

* Crystal and Ceramic Oscillators

* High Shock and Vibration Environments

* Portable and Battery-Powered Equipment

* PDAs and Cellular Phones

* Supply Current: 36µA at 400kHz

* 1% Frequency Accuracy (from 0°C to 70°C)

* Frequency Range: 40kHz to 4MHz

* One Resistor Sets the Oscillator Frequency

* –40°C to 125°C Operating Temperature Range

* Start-Up Time Under 200µs at 4MHz

* First Cycle After Power-Up is Accurate

* 150Ω CMOS Output Driver

* Low Profile (1mm) SOT-23 (ThinSOTTM) Package