LTC6431-15

RECOMMENDED FOR NEW DESIGNS

50Ω Gain Block IF Amplifier

Part Models: 4
1ku List Price: Starting From $2.40

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Overview

20MHz to 1700MHz Bandwidth
15.5dB Power Gain
47dBm OIP3 at 240MHz into a 50Ω Load
NF = 3.33dB at 240MHz
1nV/√Hz Total Input Noise
S11 < -15dB Up to 1.2GHz
S22 < -15dB Up to 1.2GHz
> 2V_P-P Linear Output Swing
P1dB = 20.6dBm
DC Power = 450mW
50Ω Single-Ended Operation
Insensitive to V_CC Variation
A-Grade 100% OIP3 Tested at 240MHz
Input/Output Internally Matched to 50Ω
Single 5V Supply
Unconditionally Stable

The LTC6431-15 is a gain-block amplifier with excellent linearity at frequencies beyond 1000MHz and with low associated output noise.

The unique combination of high linearity, low noise and low power dissipation make this an ideal candidate for many signal-chain applications. The LTC6431-15 is easy to use, requiring a minimum of external components. It is internally input/output matched to 50Ω and it draws only 90mA from a single 5V supply.

On-chip bias and temperature compensation maintain performance over environmental changes.

The LTC6431-15 uses a high performance SiGe BiCMOS process for excellent repeatability compared with similar GaAs amplifiers. All A-grade LTC6431-15 devices are tested and guaranteed for OIP3 at 240MHz. The LTC6431-15 is housed in a 4mm x 4mm 24-lead QFN package with an exposed pad for thermal management and low inductance.

Applications

Single-Ended IF Amplifier
ADC Driver
CATV

Part Models: 4
1ku List Price: Starting From $2.40

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
LTC6431AIUF-15#PBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6431AIUF-15#TRPBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6431BIUF-15#PBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6431BIUF-15#TRPBF	24-Lead QFN (4mm x 4mm 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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Hardware Ecosystem

Parts	Product Life Cycle	Description
Analog to Digital Converters (ADCs) 2
LTC2158-14	NOT RECOMMENDED FOR NEW DESIGNS	Dual 14-Bit 310Msps ADC
LTC2208	PRODUCTION	16-Bit, 130Msps ADC
Low-Noise Amplifiers (LNAs) & Power Amplifiers 1
LTC6430-15	RECOMMENDED FOR NEW DESIGNS	High Linearity Differential RF/IF Amplifier/ADC Driver
RF Mixers 1
LTC5551	PRODUCTION	300MHz to 3.5GHz Ultra-High Dynamic Range Downconverting Mixer

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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S-Parameter 1

LTC6431-15 S-Parameters

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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