LTC1799: 1kHz to 33MHz Resistor Set SOT-23 Oscillator Data Sheet (Rev. E)7/25/2016232K
Features and Benefits
- One External Resistor Sets the Frequency
- Fast Start-Up Time: <1ms
- 1kHz to 33MHz Frequency Range
- Frequency Error ≤1.5% 5kHz to 20MHz (TA = 25°C)
- Frequency Error ≤2% 5kHz to 20MHz (TA = 0°C to 70°C)
- ±40ppm/°C Temperature Stability
- 0.05%/V Supply Stability
- 50% ±1% Duty Cycle 1kHz to 2MHz
- 50% ±5% Duty Cycle 2MHz to 20MHz
- 1mA Typical Supply Current
- 100Ω CMOS Output Driver
- Operates from a Single 2.7V to 5.5V Supply
- Low Profile (1mm) SOT-23 (ThinSOT™ Package)
- AEC-Q100 Qualified for Automotive Applications
The LTC1799 is a precision oscillator that is easy to use and occupies very little PC board space. The oscillator frequency is programmed by a single external resistor (RSET). The LTC1799 has been designed for high accuracy operation (≤1.5% frequency error) without the need for external trim components.
The LTC1799 operates with a single 2.7V to 5.5V power supply and provides a rail-to-rail, 50% duty cycle square wave output. The CMOS output driver ensures fast rise/fall times and rail-to-rail switching. The frequency-setting resistor can vary from 3k to 1M to select a master oscillator frequency between 100kHz and 33MHz (5V supply). The three-state DIV input determines whether the master clock is divided by 1, 10 or 100 before driving the output, providing three frequency ranges spanning 1kHz to 33MHz (5V supply). The LTC1799 features a proprietary feedback loop that linearizes the relationship between RSET and frequency, eliminating the need for tables to calculate frequency.
- Low Cost Precision Oscillator
- Switching Power Supply Clock Reference
- Clocking Switched Capacitor Filters
- Fixed Crystal Oscillator Replacement
- Ceramic Oscillator Replacement
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
DC2073B demo board features SOT23 packaged silicon oscillators. The DC2073B demo board is available in eleven different options; DC2073B-A through DC2073B-K. These eleven options provide for the evaluation of resistor-set oscillator ICs and fixed frequency ICs.
Documentation & Resources
R426 Reliability Data3/22/201831 K
AN118 - High Voltage, Low Noise, DC/DC Converters6/17/20152M
AN98 - Signal Sources, Conditioners and Power Circuitry Circuits of the Fall, 20049/4/2008864K
AN94 - Slew Rate Verification for Wideband Amplifiers: The Taming of the Slew11/16/2007579K
AN93 - Instrumentation Applications for a Monolithic Oscillator: A Clock for All Reasons8/20/20071M
DC2073B Demo Manual1/5/2022583K
DN293 - Using the LTC6900 Low Power SOT-23 Oscillator as a VCO6/28/2016174K
DN262 - SOT-23 1kHz to 30MHz Oscillator with Single Resistor Frequency Set8/6/201483K
40nVP–P Noise, 0.05µV/°C Drift, Chopped FET Amplifier3/1/2006 LT Journal
High Accuracy Clock up to 170MHz in a SOT-233/1/2005 LT Journal
Digital Programmable Oscillator Is Smaller, Sturdier and More Versatile than Crystal Oscillators12/1/2003 LT Journal
How to Use the LTC6900 Low Power SOT-23 Oscillator as a VCO5/1/2002 LT Journal
New 5-Lead SOT-23 Oscillator is Small, Very Stable and Easy to Use2/1/2001 LT Journal
Tools & Simulations
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
OscCalc is a quick and easy tool to help you find the right silicon oscillator for your application.
LTC1799 Companion Parts
Recommended µModule Isolator
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Please see the latest communication from our CCO regarding lead times.
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.