LT6604CUFF-5#PBF

Overview

The LT6604CUFF-5#PBF is a dual-channel integrated circuit featuring very low noise differential amplifiers and 5MHz fourth-order lowpass filters. It operates on a single 3V supply or ±5V dual supplies, housed in a 34-lead 4mm x 7mm QFN package. The device provides resistor-programmable differential gain with guaranteed phase and gain matching between channels. Key electrical specifications include a typical signal-to-noise ratio of 82dB at unity gain with a 3V supply, input referred noise of 45μV RMS (10kHz to 5MHz bandwidth), and high channel separation of -117dB.

Feature Summary

• Integrates two matched fully differential amplifiers with 4th order 5MHz lowpass filters approximating Chebyshev response
• Enables level shifting via adjustable output common mode voltage for direct ADC interfacing
• Features resistor-programmable differential gain with guaranteed channel-to-channel gain and phase matching

Applications

• Dual differential ADC driver and filter
• Single-ended to differential converter
• High speed ADC antialiasing and DAC smoothing in wireless infrastructure
• Medical imaging systems

Procurement Notes

Verify the specific suffix 'C' indicates the commercial temperature range of 0°C to 70°C, distinct from the industrial grade variant. Confirm the '#PBF' designation corresponds to lead-free packaging and RoHS compliance as per manufacturer standards. Ensure the 34-lead QFN footprint matches the PCB layout requirements before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring simultaneous filtering and differential amplification with tight channel matching. It is suitable for applications needing common mode translation and operation from a single 3V supply. Consider the thermal characteristics of the exposed pad connection and ensure adequate bypass capacitance is placed near the power supply pins for stable performance.

Part Context

This part belongs to the LT6604 family of dual differential amplifiers with integrated lowpass filters. Variants within the series offer different cutoff frequencies ranging from 2.5MHz to 20MHz. The LT6604CUFF-5#PBF specifically denotes the commercial temperature grade version with a 5MHz filter cutoff, distinguishing it from the industrial grade LT6604IUFF-5#PBF.

Replacement Considerations

LT6604IUFF-5#PBF