LTC1799HS5#WTRPBF

Programmable Timers And Oscillators Overview

The LTC1799HS5#WTRPBF is an automotive-grade silicon oscillator from Analog Devices, designed for high-precision frequency generation in compact spaces. It operates on a single 2.7V to 5.5V supply and features a rail-to-rail CMOS output with fast rise/fall times. The oscillation frequency is set by a single external resistor (RSET) connected between the SET and V+ pins, spanning a range of 1kHz to 33MHz via a three-state DIV input that selects division factors of 1, 10, or 100. The device ensures high accuracy with ≤1.5% frequency error at 25°C and ±40ppm/°C temperature stability. It is housed in a low-profile 5-lead TSOT-23 package and meets AEC-Q100 qualification standards.

Programmable Timers And Oscillators Feature Summary

• Automotive Grade: AEC-Q100 qualified with extended operating temperature range of –40°C to 125°C
• Precision Frequency Control: Single external resistor sets frequency with ≤1.5% error (5kHz–20MHz at 25°C)
• Wide Frequency Range: 1kHz to 33MHz output using ÷1, ÷10, or ÷100 divider settings
• Low Power Consumption: Typical supply current of 1mA at 5V

Programmable Timers And Oscillators Applications

• Switching power supply clock references
• Clocking switched capacitor filters
• Fixed crystal oscillator replacement
• Ceramic oscillator replacement

Programmable Timers And Oscillators Procurement Notes

Verify the #W suffix indicates AEC-Q100 automotive qualification and restricted manufacturing controls. Confirm the HS5 designation corresponds to the –40°C to 125°C industrial/automotive temperature grade. Ensure the TRMPBF suffix matches the required mini tape and reel packaging format containing 500 pieces. Cross-reference the specific lot traceability requirements if mandated by the target automotive application.

Programmable Timers And Oscillators Selection Notes

Select this variant when automotive reliability and wide temperature operation are required. The HS5 grade supports –40°C to 125°C, whereas the IS5 grade is limited to –40°C to 85°C. Frequency accuracy degrades slightly outside the 5kHz–20MHz range; ensure RSET values remain within 3kΩ to 1MΩ. For frequencies above 10MHz, maintain a supply voltage greater than 4V to guarantee performance. Use precision metal film resistors for RSET to minimize tolerance-induced errors.

Programmable Timers And Oscillators Part Context

This component belongs to the LTC1799 family of silicon oscillators. The 'H' suffix denotes the high-temperature grade (–40°C to 125°C), while the 'S5' indicates the 5-lead TSOT-23 package. The '#W' suffix identifies it as an automotive-grade product manufactured under controlled conditions. The 'TRMPBF' suffix specifies the mini tape and reel packaging option.

Programmable Timers And Oscillators Replacement Considerations

Public confirmed substitute part numbers: LTC1799IS5#WTRMPBF (lower temperature grade). Non-automotive equivalents include LTC1799CS5#TRMPBF and LTC1799IS5#TRMPBF.