LTC1799CS5#TRMPBF

Programmable Timers And Oscillators Overview

The LTC1799CS5#TRMPBF is a precision silicon oscillator manufactured by Analog Devices Inc. It operates on a single 2.7V to 5.5V supply and generates a rail-to-rail square wave output with a typical 50% duty cycle. The oscillation frequency is programmed via a single external resistor (RSET) connected between the SET pin and V+, spanning an output range of 1kHz to 33MHz. A three-state DIV input allows for division by 1, 10, or 100. The device features a proprietary feedback loop that linearizes the relationship between RSET and frequency, ensuring high accuracy without external trimming components.

Programmable Timers And Oscillators Feature Summary

• Frequency programming via a single external resistor (RSET) ranging from 3kΩ to 1MΩ
• Three-state DIV input enables frequency division by 1, 10, or 100
• High frequency accuracy with ≤1.5% error at 25°C for frequencies between 5kHz and 20MHz
• Low profile 5-lead TSOT-23 package with fast start-up time under 1ms

Programmable Timers And Oscillators Applications

• Switching power supply clock reference
• Clocking switched capacitor filters
• Replacement for fixed crystal oscillators
• Replacement for ceramic oscillators

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix #TRMPBF indicates a tape and reel packaging configuration containing 500 pieces. Confirm that the 'C' grade designation corresponds to the commercial operating temperature range of 0°C to 70°C. Ensure compatibility with the required voltage levels and load conditions before finalizing procurement orders.

Programmable Timers And Oscillators Selection Notes

Select this component when a low-cost, small-footprint oscillator is required. The 'C' suffix denotes the commercial temperature grade; use the 'I' suffix for industrial ranges (-40°C to 85°C). Calculate the necessary RSET value using the provided formula based on the desired output frequency and divider setting. Ensure the supply voltage meets the minimum requirements for the target frequency range.

Programmable Timers And Oscillators Part Context

This part belongs to the LTC1799 family of precision oscillators. The CS5#TRMPBF variant specifically designates the commercial temperature grade packaged in a mini tape and reel format. Other variants include the IS5 for industrial temperatures and HS5 for extended automotive-grade reliability.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements within the same package and electrical specifications include the LTC1799IS5#TRMPBF for industrial temperature applications and the LTC1799HS5#TRMPBF for extended temperature ranges. Automotive qualified versions are available as the LTC1799IS5#WTRMPBF.