LTC6431-20
RECOMMENDED FOR NEW DESIGNS20dB Gain Block, 50Ω IF Amplifier
- Part Models
- 4
- 1ku List Price
- Starting From $2.40
Part Details
- 50Ω Matched 20MHz to 1400MHz
- 20.8dB Power Gain
- 46.2dBm OIP3 at 240MHz Into 50Ω
- NF = 2.6dB at 240MHz
- 0.6nV/√Hz Total Input Noise
- S11 < –10dB Up to 2.0GHz
- S22 < –10dB Up to 1.4GHz
- >2.0VP-P Linear Output Swing
- P1dB = 22.0dBm
- 50Ω Single-Ended Input/Output
- Insensitive to VCC Variation
- A-Grade 100% OIP3 Tested at 240MHz
- Input/Output Internally Matched to 50Ω
- Single 5V Supply
The 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. The LTC6431-20 is easy to use, requiring a minimum of external components. It is internally input/output matched to 50Ω and it draws only 93mA from a single 5V supply.
On-chip bias and temperature compensation maintain performance over environmental changes.
The LTC6431-20 uses a high performance SiGe BiCMOS process for excellent repeatability compared with similar GaAs amplifiers. All A-grade LTC6431-20 devices are tested and guaranteed for OIP3 at 240MHz. The LTC6431-20 is housed in a 4mm × 4mm 24-lead QFN package with an exposed pad for thermal management and low inductance.
Applications
- Single-Ended IF Amplifier
- ADC Driver
- CATV
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Technical Articles 1
Product Selector Card 1
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-20#PBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC6431AIUF-20#TRPBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC6431BIUF-20#PBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC6431BIUF-20#TRPBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
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.
Open ToolS-Parameter 1
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.
Open ToolEvaluation Kits
LTC6431-20 Demo Board 50Ω, 20dB Gain Block Demo Board