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                                                                                                    1. Home
                                                                                                    2. RF & Wireless
                                                                                                    3. RF & Wireless ICs
                                                                                                    4. RF Amplifier ICs
                                                                                                    Print Page

                                                                                                    LTC6431BIUF-20#PBF

                                                                                                    RF Amplifier, 20 MHz to 2 GHz, 5.25 V Supply, QFN-EP-24, -40 °C to 85 °C

                                                                                                    Date/Lot Code

                                                                                                    ANALOG DEVICES
                                                                                                    Image is for illustrative purposes only. Please refer to product description.
                                                                                                    ANALOG DEVICES LTC6431BIUF-20#PBF
                                                                                                    ManufacturerANALOG DEVICES
                                                                                                    Manufacturer Part NoLTC6431BIUF-20#PBF
                                                                                                    Newark Part No.50AK3935
                                                                                                    Your Part Number
                                                                                                    Technical Datasheet

                                                                                                    Data Sheet

                                                                                                    See all Technical Docs
                                                                                                    4 In Stock

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                                                                                                    Price shown includes applicable duties and tariffs
                                                                                                    QuantityPrice
                                                                                                    1+$6.740
                                                                                                    10+$5.180
                                                                                                    25+$4.920
                                                                                                    50+$4.660
                                                                                                    182+$4.390
                                                                                                    273+$4.220
                                                                                                    546+$4.140
                                                                                                    Price for:Each
                                                                                                    Minimum: 1
                                                                                                    Multiple: 1
                                                                                                    $6.74
                                                                                                    Line Note
                                                                                                    Added to your Order Confirmation, Invoice, and Dispatch note for this order only.

                                                                                                    Product Information

                                                                                                    ANALOG DEVICES
                                                                                                    ManufacturerANALOG DEVICES
                                                                                                    Manufacturer Part NoLTC6431BIUF-20#PBF
                                                                                                    Newark Part No.50AK3935
                                                                                                    Technical Datasheet

                                                                                                    Data Sheet

                                                                                                    Frequency Min20MHz
                                                                                                    Frequency Max2GHz
                                                                                                    Gain20.9dB
                                                                                                    No. of Channels1Channels
                                                                                                    Noise Figure Typ3.8dB
                                                                                                    Frequency Response RF Min20MHz
                                                                                                    Frequency Response RF Min20MHz
                                                                                                    Frequency Response RF Max2GHz
                                                                                                    Frequency Response RF Max2GHz
                                                                                                    RF IC Case StyleQFN-EP
                                                                                                    Gain Typ20.9dB
                                                                                                    Gain Typ20.9dB
                                                                                                    Third Order Output Intercept Point OIP3 Typ46.2dBm
                                                                                                    Supply Voltage Min4.75V
                                                                                                    Supply Voltage Max5.25V
                                                                                                    IC Case / PackageQFN-EP
                                                                                                    No. of Pins24Pins
                                                                                                    Operating Temperature Min-40°C
                                                                                                    Operating Temperature Max85°C
                                                                                                    Product Range-
                                                                                                    MSLMSL 1 - Unlimited
                                                                                                    SVHCNo SVHC (04-Feb-2026)

                                                                                                    Product Overview

                                                                                                    LTC6431-20 is a gain block amplifier exhibiting excellent linearity at frequencies beyond 1000MHz and with low associated output noise. The unique combination of linearity, low-noise and low power dissipation make this an ideal candidate for many signal-chain applications. It is easy to use, requiring a minimum of external components. It is internally input/output matched to 50 ohm and it draws only 93mA from a single 5V supply. On-chip bias and temperature compensation maintain performance over environmental changes. It uses a high performance SiGe BiCMOS process for excellent repeatability compared with similar GaAs amplifiers etc.

                                                                                                    • Forward power gain (50MHz to 1000MHz) is 20.8dB typ at (TA = 25°C, VCC = 5V)
                                                                                                    • Output third-order intercept point is 45.7dBm typ at (POUT = 2dBm/Tone, ∆f = 1MHz)
                                                                                                    • Noise figure is 2.6dB typical at (TA = 25°C, VCC = 5V, ZSOURCE = ZLOAD = 50 ohm)
                                                                                                    • Output 1dB compression point is 22.0dBm typical at (TA = 25°C, VCC = 5V, ZSOURCE = ZLOAD = 50 ohm)
                                                                                                    • 50 ohm single-ended input/output
                                                                                                    • Insensitive to VCC variation
                                                                                                    • Input return loss (20MHz to 2000MHz) is -10dB typ at (TA = 25°C, VCC = 5V)
                                                                                                    • Output return loss (20MHz to 1400MHz) is -10dB typ at (TA = 25°C, VCC = 5V)
                                                                                                    • Operating temperature is -40°C to 85°C
                                                                                                    • Package style is 24-lead plastic QFN

                                                                                                    Notes

                                                                                                    ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party

                                                                                                    Technical Specifications

                                                                                                    Frequency Min

                                                                                                    20MHz

                                                                                                    Gain

                                                                                                    20.9dB

                                                                                                    Noise Figure Typ

                                                                                                    3.8dB

                                                                                                    Frequency Response RF Min

                                                                                                    20MHz

                                                                                                    Frequency Response RF Max

                                                                                                    2GHz

                                                                                                    Gain Typ

                                                                                                    20.9dB

                                                                                                    Third Order Output Intercept Point OIP3 Typ

                                                                                                    46.2dBm

                                                                                                    Supply Voltage Max

                                                                                                    5.25V

                                                                                                    No. of Pins

                                                                                                    24Pins

                                                                                                    Operating Temperature Max

                                                                                                    85°C

                                                                                                    MSL

                                                                                                    MSL 1 - Unlimited

                                                                                                    Frequency Max

                                                                                                    2GHz

                                                                                                    No. of Channels

                                                                                                    1Channels

                                                                                                    Frequency Response RF Min

                                                                                                    20MHz

                                                                                                    Frequency Response RF Max

                                                                                                    2GHz

                                                                                                    RF IC Case Style

                                                                                                    QFN-EP

                                                                                                    Gain Typ

                                                                                                    20.9dB

                                                                                                    Supply Voltage Min

                                                                                                    4.75V

                                                                                                    IC Case / Package

                                                                                                    QFN-EP

                                                                                                    Operating Temperature Min

                                                                                                    -40°C

                                                                                                    Product Range

                                                                                                    -

                                                                                                    SVHC

                                                                                                    No SVHC (04-Feb-2026)

                                                                                                    Technical Docs (2)

                                                                                                    Technical Data Sheet EN

                                                                                                    Product Change Notice EN

                                                                                                    Legislation and Environmental

                                                                                                    US ECCN:EAR99
                                                                                                    EU ECCN:Unknown
                                                                                                    RoHS Compliant:Yes

                                                                                                    RoHS

                                                                                                    RoHS Phthalates Compliant:Yes

                                                                                                    RoHS

                                                                                                    SVHC:No SVHC (04-Feb-2026)
                                                                                                    Download Product Compliance Certificate

                                                                                                    Product Compliance Certificate

                                                                                                    Product traceability

                                                                                                    Date/Lot Code

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