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LT6604-5

RECOMMENDED FOR NEW DESIGNS

Dual Very Low Noise, Differential Ampliﬁer and 5MHz Lowpass Filter

Data Sheet Product Selection Table

Part Models: 4
1ku List Price: Starting From $7.73

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Overview

Dual Differential Ampliﬁer with 5MHz Lowpass Filters
- 4th Order Filters
- Approximates Chebyshev Response
- Guaranteed Phase and Gain Matching
- Resistor-Programmable Differential Gain
>82dB Signal-to-Noise (3V Supply, 2V_P-P Output)
Low Distortion (1MHz, 2V_P-P Output, 800Ω Load)
- HD2: 93dBc
- HD3: 96dBc
Specified for Operation with 3V, 5V and ±5V Supplies
Fully Differential Inputs and Outputs
Adjustable Output Common Mode Voltage
Small 4mm × 7mm × 0.75mm QFN Package

The LT6604-5 consists of two matched, fully differential amplifiers, each with a 4th order, 5MHz lowpass ﬁlter. The ﬁxed frequency lowpass ﬁlter approximates a Chebyshev response. By integrating a ﬁlter and a differential amplifier, distortion and noise are made exceptionally low. At unity gain, the measured in-band signal-to-noise ratio is an impressive 82dB. At higher gains, the input referred noise decreases, allowing the part to process smaller input differential signals without significantly degrading the signal-to-noise ratio.

Gain and phase are well matched between the two channels. Gain for each channel is independently programmed using two external resistors. The LT6604-5 enables level shifting by providing an adjustable output common mode voltage, making it ideal for directly interfacing to ADCs. The LT6604-5 is fully specified for 3V operation. The differential design enables outstanding performance at a 2VP-P signal level for a single 3V supply.

See the back page of this datasheet for a complete list of related single and dual differential amplifiers with integrated 2.5MHz to 20MHz lowpass ﬁlters.

Applications

Dual Differential ADC Driver and Filter
Single-Ended to Differential Converter
Matched, Dual, Differential Gain or Filter Stage
Common Mode Translation of Differential Signals
High Speed ADC Antialiasing and DAC Smoothing in Wireless Infrastructure or Networking Applications
High Speed Test and Measurement Equipment
Medical Imaging

Part Models: 4
1ku List Price: Starting From $7.73

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT6604CUFF-5#PBF	32-Lead QFN (4mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6604CUFF-5#TRPBF	32-Lead QFN (4mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6604IUFF-5#PBF	32-Lead QFN (4mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT6604IUFF-5#TRPBF	32-Lead QFN (4mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

ADIsimRF

ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

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Sys-Parameter Models for Keysight Genesys

Sys-Parameter models contain behavioral parameters, such as P1dB, IP3, gain, noise figure and return loss, which describe nonlinear and linear characteristics of a device.

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