LT6604IUFF-15#PBF

Overview

The LT6604IUFF-15#PBF is a dual very low noise, differential amplifier and 15MHz lowpass filter. It integrates two matched, fully differential amplifiers, each with a fourth-order, 15MHz lowpass filter approximating a Chebyshev response. The device operates on 3V, 5V, or ±5V supplies. It features resistor-programmable differential gain, adjustable output common mode voltage, and guaranteed phase and gain matching between channels. At unity gain with a 3V supply, it achieves a signal-to-noise ratio of 76dB.

Feature Summary

• Integrates two matched, fully differential amplifiers with fourth-order, 15MHz lowpass filters
• Features adjustable output common mode voltage for direct ADC interfacing
• Provides high channel-to-channel gain and phase matching
• Resistor-programmable differential gain configuration

Applications

• Dual differential ADC driver plus filter
• Single-ended to differential converter
• Matched, dual, differential filter stage
• Common mode translation of differential signals
• High speed test and measurement equipment

Procurement Notes

Verify the suffix IUFF-15#PBF corresponds to the industrial temperature range (-40°C to 85°C) and lead-free finish. Confirm the package is the 34-lead (4mm × 7mm) plastic QFN. Ensure the ordering code matches the specific manufacturer documentation for the LT6604-15 series.

Selection Notes

Select this component when a dual-channel solution with integrated filtering is required. It is suitable for applications needing high signal-to-noise ratios and precise channel matching. Consider the adjustable output common mode voltage for level shifting requirements. Verify that the 15MHz cutoff frequency aligns with the system bandwidth needs.

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 'I' designation indicates an extended industrial temperature range compared to commercial grade parts. The device is designed for high-speed data acquisition systems.

Replacement Considerations

Check datasheets for other LT6604 variants with different cutoff frequencies. Verify pin compatibility and electrical specifications before substitution. Ensure the replacement part supports the required supply voltages and package type.