LT6604CUFF-15#TRPBF

Overview

The LT6604CUFF-15#TRPBF is a dual very low noise, differential amplifier and 15MHz lowpass filter. It integrates two matched channels, each featuring a fourth-order Chebyshev lowpass filter. The device supports 3V, 5V, and ±5V supplies. At unity gain with a 3V supply, it achieves a signal-to-noise ratio of 76dB. Distortion at 1MHz is 86dBc (2nd harmonic) and 90dBc (3rd harmonic). Power supply current per channel is 35mA at 3V and 38mA at 5V. Input referred noise is 109μV RMS over a 10kHz to 15MHz bandwidth.

Feature Summary

• Integrates two fully differential amplifiers with fourth-order lowpass filters
• Provides adjustable output common mode voltage for ADC interfacing
• Features resistor-programmable differential gain
• Ensures high channel-to-channel gain and phase matching

Applications

• Dual differential ADC driver plus filter
• Single-ended to differential converter
• Matched dual differential filter stage
• High speed test and measurement equipment
• Medical imaging systems

Procurement Notes

Verify the ordering suffix TRPBF indicates tape and reel packaging. Confirm the C grade specifies an operating temperature range of 0°C to 70°C. Ensure the package type matches the 34-lead QFN specification. Check lead-free finish compliance against project requirements.

Selection Notes

Select this component when a combined filtering and amplification solution is required. The integrated design reduces external component count. Verify that the 15MHz cutoff frequency aligns with system bandwidth needs. Ensure the input signal levels remain within the specified differential limits to avoid distortion.

Part Context

This part belongs to the LT6604 family of dual differential amplifiers with integrated lowpass filters. Variants exist with different cutoff frequencies ranging from 2.5MHz to 20MHz. The family shares similar pinouts and functional architectures, differing primarily in filter specifications and temperature grades.

Replacement Considerations

LT6604IUFF-15#TRPBF offers the same electrical performance but with an extended temperature range of -40°C to 85°C.