LTC6605CDJC-14#TRPBF

Overview

The LTC6605CDJC-14#TRPBF is a dual matched 14MHz lowpass filter with differential amplifiers. It features two independent channels with pin-selectable gains of 0dB, 6dB, or 9.5dB. The supply voltage range is 2.7V to 5.25V. Operating temperature is 0°C to 70°C. Supply current per channel is 33.1mA at full power, 16.2mA at medium power, and 0.35mA in shutdown. Input noise density is 2.1nV/√Hz. Gain match is ±0.25dB max; phase match is ±1.1° max. Package is 22-lead DFN (6mm × 3mm).

Feature Summary

• Dual matched second-order lowpass filters with internal laser-trimmed components for precise gain and phase matching.
• Pin-selectable passband gain configurations of 0dB, 6dB, and 9.5dB without external resistors.
• Three-state BIAS pins allow selection between full power, medium power, and shutdown modes.
• Adjustable output common mode voltage control via dedicated VOCM pins.

Applications

• Broadband wireless ADC driver and antialiasing filter
• Single-ended to differential conversion circuits
• DAC smoothing filter applications
• Zero-IF direct conversion receivers

Procurement Notes

Verify the C suffix indicates a commercial temperature range of 0°C to 70°C, distinct from the I suffix industrial range. Confirm the TRPBF suffix denotes tape and reel packaging. Ensure the part number matches the specific 14MHz cutoff variant required for the design.

Selection Notes

Select this component when dual matched filtering is required for differential signal chains. Verify that the 0°C to 70°C operating range meets system thermal requirements. Consider the adjustable f-3dB frequency using external resistors if the nominal 14MHz response requires tuning.

Part Context

This device belongs to the LTC6605 family of dual matched active filters. The CDJC-14 variant specifically targets the 14MHz cutoff frequency with commercial grade temperature specifications. It serves as a precision analog front-end solution for high-speed data acquisition systems requiring matched channel performance.

Replacement Considerations

LTC6605IDJC-14#TRPBF offers identical electrical performance but supports an extended -40°C to 85°C operating temperature range. Verify package compatibility and thermal management requirements when substituting between the C and I grades.