LTC6605IDJC-14#PBF

Overview

The LTC6605IDJC-14#PBF is a dual-channel, matched 14MHz lowpass filter with fully differential amplifiers. It operates on a 2.7V to 5.25V supply and features pin-selectable gains of 0dB, 6dB, or 9.5dB. The device provides adjustable f–3dB frequencies from 12.4MHz to 20MHz using external resistors. Key electrical parameters include a maximum gain match of ±0.25dB and phase match of ±1.1°. Supply current ranges from 0.35mA in shutdown to 33.1mA per channel at full power. It utilizes a 22-pin DFN package.

Feature Summary

• Dual matched second-order lowpass filters with integrated fully differential amplifiers
• Pin-selectable passband gain configurations for system flexibility
• Three-state BIAS pins enabling precise control over power consumption modes
• Adjustable output common mode voltage via dedicated VOCM pins

Applications

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

Procurement Notes

Verify the specific IDJC suffix indicates the industrial temperature range (-40°C to 85°C) as documented in the ordering information table. Confirm the package type matches the 22-lead plastic DFN specifications. Ensure the component meets lead-free finish requirements if applicable to your manufacturing process. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity.

Selection Notes

Select this component when matching between two channels is critical for high-performance differential systems. The internal laser-trimmed components ensure tight gain and phase matching across the operating temperature range. Consider the adjustable cutoff frequency feature if precise filter tailoring is required without changing the core architecture. Evaluate the three-state power consumption options against system thermal constraints.

Part Context

This part belongs to the LTC6605 family of active filters. The 'I' designation specifies the industrial temperature grade, distinguishing it from commercial variants. The '14' suffix denotes the specific 14MHz center frequency configuration. Analog Devices manufactures this series to provide precision filtering solutions for high-speed data acquisition systems requiring low noise and distortion.

Replacement Considerations

Consult the manufacturer's documentation for alternative parts within the same product line that may offer different temperature grades or packaging options. Verify compatibility regarding pinout and electrical characteristics before substituting any other component.