LTC6605CDJC-14#PBF

Overview

The LTC6605CDJC-14#PBF is a dual matched 14MHz lowpass filter with differential amplifiers. It features two independent channels with internal laser-trimmed resistors and capacitors for precise gain and phase matching. The device operates on a single supply voltage ranging from 2.7V to 5.25V. It accepts both single-ended and differential inputs, providing rail-to-rail output swing. Pin-selectable gain options include 0dB, 6dB, and 9.5dB. Power consumption is configurable via three-state BIAS pins, allowing shutdown, medium power, or full power modes. The component is housed in a compact 22-lead 6mm × 3mm plastic DFN package.

Feature Summary

• Dual matched second-order lowpass filters with integrated fully differential amplifiers
• Internal laser-trimmed components ensure tight channel-to-channel gain and phase matching
• Pin-selectable passband gain configurations without external components
• Three-state BIAS control for adjustable power consumption and shutdown capability

Applications

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

Procurement Notes

Verify the specific ordering suffix to confirm the commercial temperature grade (0°C to 70°C) versus the industrial grade (-40°C to 85°C). Ensure the lead finish matches the required RoHS compliance standards. Confirm the package type corresponds to the 22-lead DFN footprint requirements for your PCB layout. Check for any specific tape and reel specifications if automated assembly is planned.

Selection Notes

Select this component when precise channel matching is critical for differential signal paths. Consider the pin-selectable gain options to simplify circuit design by reducing external resistor count. Evaluate the BIAS pin functionality if power management during idle states is a system requirement. Ensure the input common mode range aligns with the source signal levels and supply voltage constraints.

Part Context

This part belongs to the LTC6605 family of dual matched active filters. The 'C' suffix denotes the commercial temperature grade variant, distinct from the 'I' suffix which covers the industrial range. The '14' indicates the nominal 14MHz cutoff frequency characteristic of this specific model within the series.

Replacement Considerations

LTC6605IDJC-14#PBF offers identical electrical performance but supports an extended operating temperature range of -40°C to 85°C compared to the commercial grade.