LMH6518SQ Texas Instruments Integrated Circuit (Quad Flat No-Lead) In Stock

Name: LMH6518SQ
Brand: Texas Instruments
SKU: LMH6518SQ
Availability: InStock

LMH6518SQ is a digitally controlled variable gain amplifier from Texas Instruments. Features programmable gain via SPI interface, 900 MHz bandwidth, and low noise. Ideal for medical imaging, test equipment, and communications systems.

OBSOLETEIntegrated CircuitVerified May 2026

Package / Visual Reference

LMH6518SQQuad Flat No-Lead

Quick Facts

Manufacturer: Texas Instruments
Package: Quad Flat No-Lead
Pin Count: 16
Lifecycle: OBSOLETE
Datasheet: LMH6518SQ Datasheet PDF
Category: Integrated Circuit
Temp Range: -40.0°C to 85.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of LMH6518SQ?

Digitally programmable gain control via SPI interface with 32 gain steps
Wide 900 MHz bandwidth supporting high-speed signal processing
Low noise figure enabling high-fidelity signal amplification
Voltage-feedback operational amplifier architecture with 45 dB minimum CMRR
Compact 16-pin Quad Flat No-Lead (QFN) package for space-constrained designs

What is LMH6518SQ used for?

The LMH6518SQ is widely used in medical imaging equipment such as ultrasound machines where variable gain amplification is critical for signal conditioning. It is also employed in automated test and measurement instruments, software-defined radios, and wideband communications receivers that require precise, digitally adjustable gain control.

What are the specifications of LMH6518SQ?

YTEOL	0
Amplifier Type	OPERATIONAL AMPLIFIER
Architecture	VOLTAGE-FEEDBACK
Average Bias Current-Max (IIB)	140 µA
Bias Current-Max (IIB) @25C	100 µA
Common-mode Reject Ratio-Min	45dB
Common-mode Reject Ratio-Nom	86dB
Frequency Compensation	YES
JESD-30 Code	S-XQCC-N16
JESD-609 Code	e0
Low-Bias	NO
Low-Offset	NO
Micropower	NO
Number of Functions	1
Package Body Material	UNSPECIFIED
Package Shape	SQUARE
Package Style	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Packing Method	TR
Peak Reflow Temperature (Cel)	235
Power	NO
Programmable Power	NO
Supply Current-Max	230mA
Supply Voltage Limit-Max	5.5V
Supply Voltage-Nom (Vsup)	5V
Surface Mount	YES
Technology	BICMOS
Temperature Grade	INDUSTRIAL
Terminal Finish	Tin/Lead (Sn85Pb15)
Terminal Form	NO LEAD
Terminal Pitch	0.5mm
Terminal Position	QUAD
Time@Peak Reflow Temperature-Max (s)	30
Wideband	NO
Package	Quad Flat No-Lead

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 2
ECCN	EAR99
HTS Code	8542.33.00.01

Where can I find the LMH6518SQ datasheet?

LMH6518SQ Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for LMH6518SQ?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

What is the gain control range and interface of the LMH6518SQ?

The LMH6518SQ offers digitally programmable gain control via a 3-wire SPI interface, providing 32 discrete gain steps. This allows precise gain adjustment in high-speed signal chains without manual hardware changes, making it ideal for automated test systems and adaptive receivers.

What are the key bandwidth and noise specifications of the LMH6518SQ?

The LMH6518SQ features a bandwidth of approximately 900 MHz, enabling high-frequency signal amplification. It has a maximum bias current (IIB) of 100 µA at 25°C and a minimum common-mode rejection ratio (CMRR) of 45 dB, with a nominal CMRR of 86 dB for excellent noise rejection.

What are the typical applications for the LMH6518SQ amplifier?

The LMH6518SQ is commonly used in medical ultrasound front-end signal conditioning, wideband communications receivers, automated test and measurement equipment, and software-defined radio platforms. Its digitally controlled gain makes it well-suited for any application requiring dynamic amplitude control over wide bandwidths.

What package type does the LMH6518SQ come in and what does that mean for PCB design?

The LMH6518SQ is available in a 16-pin Quad Flat No-Lead (QFN) package, which provides a compact footprint and excellent thermal performance. The exposed pad on the bottom of the package aids heat dissipation, and the small size is beneficial for high-density PCB layouts in portable or space-constrained applications.

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.

Aug 6, 2026

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.

Aug 6, 2026

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.

Aug 4, 2026

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.

Aug 4, 2026

Why Buy from FindMyChip

Authorized Source

Verified supply chain with full traceability & inspection

Competitive Pricing

Factory-direct from China distributors, low MOQ

Fast Shipping

DHL Express 3–5 days · FedEx/UPS 5–7 days worldwide

Quality Guaranteed

30-day replacement for defective parts, no questions asked

About Texas Instruments

Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.

View all Texas Instruments parts →

More from Texas Instruments

SN74HC138PWT

Small Outline Packages

Integrated Circuit

MCP6292IDGKT

Small Outline Packages

Integrated Circuit

CD4511BMN

Dual-In-Line Packages

Integrated Circuit

UCC2803DG4

Small Outline Packages

Integrated Circuit

MC33078DRE4

Small Outline Packages

Integrated Circuit

TLV6710DDCT

SOT23 (6-Pin)

Integrated Circuit

AvailabilityIn Stock

Reference Price (USD)

Contact for Price

Buy from 1pc · Factory-direct pricing

pcs

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”

Rajesh Patel

Procurement Manager, VoltEdge Energy, India

LMH6518SQ Texas Instruments Integrated Circuit (Quad Flat No-Lead) In Stock

What are the key features of LMH6518SQ?

What is LMH6518SQ used for?

What are the specifications of LMH6518SQ?

Compliance & Regulatory

Where can I find the LMH6518SQ datasheet?

What are equivalent replacements for LMH6518SQ?

Frequently Asked Questions

What is the gain control range and interface of the LMH6518SQ?

What are the key bandwidth and noise specifications of the LMH6518SQ?

What are the typical applications for the LMH6518SQ amplifier?

What package type does the LMH6518SQ come in and what does that mean for PCB design?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Texas Instruments

More from Texas Instruments

You May Also Like