LTC6990CDCB#TRPBF

Programmable Timers And Oscillators Overview

The LTC6990CDCB#TRPBF is a precision silicon oscillator from the TimerBlox family, manufactured by Analog Devices Inc. It supports programmable frequency operation ranging from 488Hz to 2MHz and functions as either a fixed-frequency or voltage-controlled oscillator (VCO). The device utilizes a single external resistor at the SET pin to program the internal master oscillator frequency, which is subsequently divided by an internal divider (NDIV) selectable from eight settings between 1 and 128. It features a CMOS logic output capable of sourcing and sinking 20mA with a 50% duty cycle square wave. The component operates within a supply voltage range of 2.25V to 5.5V and is housed in a low-profile 6-lead (2mm × 3mm) plastic DFN package.

Programmable Timers And Oscillators Feature Summary

• Programmable frequency range from 488Hz to 2MHz using a single external resistor
• Internal frequency divider (NDIV) offers eight settings: 1, 2, 4, 8, 16, 32, 64, and 128
• CMOS output driver sources and sinks up to 20mA with 50% duty cycle square wave
• Voltage-controlled oscillator (VCO) capability via linear voltage control on the SET input
• Output enable function synchronized with the master oscillator for glitch-free pulses

Programmable Timers And Oscillators Applications

• Voltage-Controlled Oscillator circuits
• Replacement for fixed crystal and ceramic oscillators
• Portable and battery-powered equipment
• High vibration and high acceleration environments

Programmable Timers And Oscillators Procurement Notes

Verify that the specific part number matches the required temperature grade and package configuration. The LTC6990CDCB#TRPBF corresponds to the C-grade variant with a specified operating temperature range of 0°C to 70°C. Confirm the package type is the 6-Lead (2mm × 3mm) Plastic DFN. Ensure compatibility with the intended supply voltage and load requirements before procurement.

Programmable Timers And Oscillators Selection Notes

Select the LTC6990CDCB#TRPBF when the application requires a precision silicon oscillator within the 0°C to 70°C commercial temperature range. This specific suffix indicates the Tape and Reel packaging format. For applications requiring wider temperature ranges, consider the I-grade (-40°C to 85°C), H-grade (-40°C to 125°C), or MP-grade (-55°C to 125°C) variants. Ensure the design accounts for the recommended RSET range of 50kΩ to 800kΩ for optimal accuracy.

Programmable Timers And Oscillators Part Context

The LTC6990 is part of the TimerBlox family of versatile silicon timing devices produced by Analog Devices Inc. This family includes various models differentiated by temperature grades and package types, such as the SOT-23 (S6) and DFN (DCB) packages. The CDCB designation specifically identifies the Commercial grade (C) version in the DCB DFN package with Tape and Reel delivery.

Programmable Timers And Oscillators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.