**LTC6905CS5#TRPBF: A Low-Power SOT-23 Oscillator for Precision Frequency Generation**

In the realm of modern electronic design, the demand for compact, efficient, and precise clock sources is ever-increasing. The **LTC6905CS5#TRPBF** from Analog Devices stands out as a premier solution, **integrating a complete precision oscillator** into a minuscule SOT-23 package. This device is engineered to generate a user-programmable frequency from **1kHz to 20MHz** with exceptional accuracy, making it an indispensable component for a wide array of applications including data acquisition, instrumentation, and frequency synthesis.

The core of the LTC6905's functionality lies in its **innovative resistor-set frequency programming**. By simply connecting a single external resistor (RSET) between the SET and GND pins, designers can dictate the output frequency with remarkable linearity. This simplicity drastically reduces the need for complex programming interfaces or large, bulky crystal oscillators, saving both board space and design time. The relationship is defined by the formula *fOSC = 1/(0.1 × RSET)*, allowing for straightforward and predictable frequency selection.

A key advantage of this oscillator is its **ultra-low power consumption**, a critical feature for battery-powered and portable devices. The chip operates over a wide supply voltage range of **2.7V to 5.5V**, consuming a mere 350µA at 3V with a 20MHz output. This efficiency does not come at the expense of performance. The LTC6905 delivers a clean, **50% duty cycle square wave** with very low jitter, ensuring reliable timing for sensitive digital circuits and clocking of high-resolution ADCs.

Furthermore, the device includes a **power-down mode**, which reduces current consumption to less than 1µA. This feature is essential for maximizing battery life in applications where the oscillator does not need to run continuously. The combination of a tiny footprint, minimal external component count (only one resistor and one bypass capacitor), and low power makes the LTC6905 an exceptionally easy-to-use and versatile clock source.

**ICGOOODFIND**: The LTC6905CS5#TRPBF is a masterclass in integration and precision, offering designers a simple, robust, and highly efficient solution for generating accurate frequencies in space-constrained and power-sensitive applications.

**Keywords**: Precision Oscillator, Low Power Consumption, SOT-23 Package, Frequency Programming, Resistor-Set.