Overview
The LTC6431-20, produced by Analog Devices Inc., is a high-performance gain block amplifier designed for excellent linearity and low noise at frequencies beyond 1000MHz. This amplifier is part of the LTC6431 series and is particularly suited for various signal-chain applications due to its unique combination of high linearity, low noise, and low power dissipation. It is internally input/output matched to 50Ω, simplifying its integration into systems. The LTC6431-20 operates from a single 5V supply, drawing only 93mA, and features on-chip bias and temperature compensation to maintain performance over environmental changes.
Key Specifications
| Parameter | Value |
|---|---|
| Gain | 20dB |
| Frequency Range | Beyond 1000MHz |
| Input/Output Impedance | 50Ω (internally matched) |
| Supply Voltage | 5V |
| Current Consumption | 93mA |
| Package Type | 24-Lead QFN (4mm x 4mm x 0.75mm with exposed pad) |
| Operating Temperature Range | -40°C to 85°C |
| OIP3 at 240MHz | Guaranteed for A-grade devices |
Key Features
- High linearity and low noise performance beyond 1000MHz.
- Internally input/output matched to 50Ω, reducing the need for external matching components.
- Low power dissipation with a single 5V supply and 93mA current draw.
- On-chip bias and temperature compensation for stable performance across environmental changes.
- High performance SiGe BiCMOS process for excellent repeatability compared to GaAs amplifiers.
- Housed in a compact 4mm x 4mm 24-lead QFN package with an exposed pad for thermal management and low inductance.
Applications
The LTC6431-20 is ideal for various signal-chain applications, including but not limited to:
- RF and IF amplification in communication systems.
- ADC drivers in high-speed data acquisition systems.
- General-purpose amplification in test and measurement equipment.
- Wireless infrastructure and base stations.
- High-frequency signal processing in radar and surveillance systems.
Q & A
- What is the gain of the LTC6431-20 amplifier? The LTC6431-20 has a gain of 20dB.
- What is the frequency range of the LTC6431-20? The LTC6431-20 operates at frequencies beyond 1000MHz.
- What is the input/output impedance of the LTC6431-20? The LTC6431-20 is internally matched to 50Ω.
- What is the supply voltage and current consumption of the LTC6431-20? The LTC6431-20 operates from a single 5V supply and draws 93mA.
- What package type is the LTC6431-20 available in? The LTC6431-20 is housed in a 24-lead QFN package (4mm x 4mm x 0.75mm with an exposed pad).
- What is the operating temperature range of the LTC6431-20? The operating temperature range is -40°C to 85°C.
- Is the OIP3 at 240MHz guaranteed for all devices? Yes, OIP3 at 240MHz is guaranteed for A-grade devices.
- What process technology is used in the LTC6431-20? The LTC6431-20 uses a high-performance SiGe BiCMOS process.
- What are some typical applications of the LTC6431-20? Typical applications include RF and IF amplification, ADC drivers, test and measurement equipment, wireless infrastructure, and high-frequency signal processing.
- How does the LTC6431-20 manage thermal issues? The LTC6431-20 features an exposed pad for thermal management and low inductance.
