LTC6601CUF-1#PBF

Overview

The LTC6601CUF-1#PBF is a fully differential second-order active RC filter and driver manufactured by Analog Devices. It features pin-configurable cutoff frequencies ranging from 5MHz to 28MHz and programmable gain between -17dB and +17dB. The device operates on a supply voltage of 2.7V to 5.25V within a 0°C to 70°C temperature range. Key electrical specifications include a typical differential offset voltage of ±0.25mV, input resistance of 133Ω (single-ended) or 200Ω (differential), and a power supply rejection ratio of 66dB. It provides an 80dB signal-to-noise ratio in a 100MHz bandwidth and supports rail-to-rail output swing.

Feature Summary

• Pin-strapped configuration for adjustable gain and filter response without external components
• Three-state BIAS pin enables selection between high performance, low power, and standby modes
• On-chip resistors and capacitors are trimmed to 0.5% tolerance for consistent characteristics
• Rail-to-rail output swing with adjustable output common mode voltage

Applications

• Differential input A/D converter driver
• Antialiasing and reconstruction filtering
• Single-ended to differential conversion and amplification
• Low voltage, low noise differential signal processing
• Common mode voltage translation

Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the 'C' grade designation corresponds to the commercial temperature range of 0°C to 70°C rather than the industrial range. Check current availability status as distribution channels may list limited stock or end-of-life notifications for this component.

Selection Notes

Select this component when a compact, fully differential solution is required for ADC driving or signal conditioning. Ensure the application fits within the 2.7V to 5.25V supply range. Consider the BIAS pin configuration if power consumption optimization is critical, as floating the pin reduces current significantly compared to tying it to V+. Verify that the 20-lead QFN package footprint matches the PCB layout constraints.

Part Context

This part belongs to the LTC6601-1 family of active filters. The CU suffix denotes the commercial temperature grade (0°C to 70°C), while the IUF variant covers the industrial range (-40°C to 85°C). The #PBF suffix specifies lead-free packaging. It serves as a precision analog front-end component designed to simplify the interface between sensors or single-ended sources and high-speed data converters.

Replacement Considerations

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