LMH6517SQX/NOPB

Overview

The LMH6517SQX/NOPB is a low power, low noise dual variable gain amplifier (VGA) designed for intermediate frequency and baseband applications. It functions as a dual 16-bit ADC driver with digitally controlled gain. The device operates on a single supply voltage ranging from 4.5 V to 5.25 V, drawing 182 mA of operating current. Key electrical specifications include a slew rate of 5 kV/us, an input voltage noise density of 1.1 nV/sqrt Hz, and a maximum input resistance of 220 Ohms. It provides a voltage gain of 22 dB, a common-mode rejection ratio of 60 dB, and a power supply rejection ratio of 60 dB. The component is housed in a 32-WQFN package and supports operation within a temperature range of -40 C to +85 C.

Feature Summary

• Digitally controlled variable gain architecture optimized for driving analog-to-digital converters
• Dual-channel configuration providing low noise performance suitable for sensitive signal paths
• Single-supply operation capability simplifying power management in portable systems

Applications

• Intermediate frequency amplification in communication infrastructure
• Baseband signal processing for wideband communications
• Driving 16-bit analog-to-digital converters in data acquisition systems

Procurement Notes

Verify the specific suffix 'SQX' against the manufacturer's official documentation to confirm the reel packaging format and tape-and-reel specifications. Ensure the part number matches the exact Texas Instruments designation for the WQFN-32 package variant. Cross-reference the RoHS compliance status and humidity sensitivity classification with the latest datasheet revision to guarantee material compatibility with assembly processes.

Selection Notes

Select this component when designing circuits requiring precise digital gain control for dual-channel signal conditioning prior to digitization. It is appropriate for systems where low input-referred noise and high linearity are critical for maintaining signal integrity. Consider the 32-WQFN package constraints for thermal management and PCB layout requirements compared to single-channel alternatives in the same family.

Part Context

This device belongs to the LMH6517 series of specialized amplifiers manufactured by Texas Instruments. It is part of a broader portfolio of high-speed signal chain components designed for demanding RF and IF applications. The series includes evaluation boards such as the LMH6517EVAL-R1/NOPB for development purposes. The product falls under the Special Purpose Amplifiers category within the Amplifier ICs sub-classification.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.