LTC6432-15 - 100kHz to 1.4GHz Differential ADC Driver/IF Amplifier


  • 100kHz to 1400MHz Bandwidth
  • 54.4dBm OIP3 at 1MHz into a 100Ω Diff Load
  • 48.0dBm OIP3 at 150MHz into a 100Ω Diff Load
  • Up to 15dBm Output Power
  • NF = 3.0dB at 240MHz
  • Low 1/f Noise Corner
  • User Defined Low Frequency
  • 15.2dB Fixed Power Gain
  • A-Grade 100% OIP3 Tested at 150MHz
  • 0.8 nV/√Hz Total Input Noise
  • >2.75VP-P Linear Output Swing
  • P1dB = 22.5dBm
  • Insensitive to VCC Variation
  • Input/Output Internally Matched to 100Ω Differential
  • Single 5V Supply
  • DC Power = 850mW
  • Unconditionally Stable

Typical Application

LTC6432-15 Typical Application
LTC6432-15 Typical Application


The LTC6432-15 is an ultra-high dynamic range differentialgain block amplifier designed to drive high resolution,high speed ADCs. It offers a full GHz of data bandwidt h forcomplex spectrally efficient modulations schemes or wh ereresistance to blockers is critical. This unique device cansimultaneously achieve low noise, incomparable linearity and flat gain over the 100kHz to 1GHz band.

Unlike wideband GaAs PHEMTs, MESFETs and GaN FETs, this SiGe based amplifier exhibits low 1/f noise and can be used down to 100kHz.

The LTC6432-15 is designed for ease of use requiring a minimum of support components. Impedance matching, temperature compensation and bias control are handled internally to ensure consistent performance over environmental changes.

All A-Grade LTC6432-15 devices are tested and guaranteed for OIP3 at 150MHz. The LTC6432-15 is housed in a 4mm × 4mm, 24L, QFN package with an exposed pad for thermal management and low inductance. For a single-ended 50Ω IF Gain Block with similar performance, see the related LTC6433-15.


For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
LTC6432AIUF-15#PBF 4x4 QFN-24 UF I 05-08-1697 Yes
LTC6432AIUF-15#TRPBF 4x4 QFN-24 UF I 05-08-1697 Yes
LTC6432BIUF-15#PBF 4x4 QFN-24 UF I 05-08-1697 Yes
LTC6432BIUF-15#TRPBF 4x4 QFN-24 UF I 05-08-1697 Yes

LTC6432-15 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LTC6432AIUF-15#PBF 4x4 QFN-24 I $8.95 $6.44 Yes
LTC6432AIUF-15#TRPBF 4x4 QFN-24 I $9.01 $6.50 Yes
LTC6432BIUF-15#PBF 4x4 QFN-24 I $5.13 $3.69 Yes
LTC6432BIUF-15#TRPBF 4x4 QFN-24 I $5.19 $3.75 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC2496A 100kHz to 1000MHz Differential ADC Driver/IF/RF Amplifier $150.00
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Click here to view our complete list of demo boards


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Design Tools

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