LMH6517SQ/NOPB

Overview

The LMH6517SQ/NOPB is a low power, low noise dual variable gain amplifier (VGA) designed for intermediate frequency and baseband applications. It functions as a driver for 16-bit analog-to-digital converters with digitally controlled gain. Key electrical specifications include a slew rate of 5 kV/us, a common-mode rejection ratio of 60 dB, and an input offset voltage of 25 mV. The device operates on a supply voltage ranging from 4.5 V to 5.25 V with a typical operating current of 182 mA. It features an input voltage noise density of 1.1 nV/sqrt Hz and provides a voltage gain of 22 dB. The component is housed in a WQFN-32 package and supports surface mount installation.

Feature Summary

• Digitally controlled gain architecture optimized for driving high-resolution ADCs
• Dual-channel configuration providing low noise performance for signal integrity
• Low power consumption suitable for portable and battery-operated systems

Applications

• Intermediate frequency amplification in communication receivers
• Baseband signal processing stages
• Driver circuits for 16-bit analog-to-digital converters

Procurement Notes

Verify the specific suffix code against the manufacturer's official documentation to ensure correct pinout and functionality. Confirm that the WQFN-32 package dimensions match the target PCB footprint. Check moisture sensitivity levels and reflow soldering profiles if handling requires strict environmental controls during assembly.

Selection Notes

Select this component when dual-channel VGA performance with digital control is required for ADC interfacing. Compare the 22 dB gain and 1.1 nV/sqrt Hz noise density against system requirements. Ensure the 4.5 V to 5.25 V supply range aligns with the available power rails in the design.

Part Context

This part belongs to the LMH6517 series of special purpose amplifiers from Texas Instruments. It is distinct from single-channel variants like the LMH6515 and evaluation boards such as the LMH6517EVAL-R1/NOPB. The series focuses on low-noise, low-power solutions for video and communication signal chains.

Replacement Considerations

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