Features and Benefits
- 51.0dBm OIP3 at 240MHz into a 100Ω Diff Load
- NF = 2.9dB at 240MHz
- 20MHz to 2060MHz –3dB Bandwidth
- 20.8dB Gain
- A-Grade 100% OIP3 Tested at 380MHz
- 0.6nV/√Hz Total Input Noise
- S11 < –10dB Up to 1.4GHz
- S22 < –10dB Up to 1.4GHz
- >2.75VP-P Linear Output Swing
- P1dB = 24.0dBm
- Insensitive to VCC Variation
- 100Ω Differential Gain-Block Operation
- Input/Output Internally Matched to 100Ω Diff
- Single 5V Supply
- DC Power = 850mW
- 4mm × 4mm, 24-Lead QFN Package
The LTC6430-20 is a differential gain block amplifier designed to drive high resolution, high speed ADCs with excellent linearity beyond 1000MHz and with low associated output noise. The LTC6430-20 operates from a single 5V power supply and consumes only 850mW.
In its differential configuration, the LTC6430-20 can directly drive the differential inputs of an ADC. Using 1:2 baluns, the device makes an excellent 50Ω wideband balanced amplifier. While using 1:1.33 baluns, the device creates a high fidelity 40MHz to 1000MHz 75Ω CATV amplifier.
The LTC6430-20 is designed for ease of use, requiring a minimum of support components. The device is internally matched to 100Ω differential source/load impedance. On-chip bias and temperature compensation ensure consistent performance over environmental changes.
The LTC6430-20 uses a high performance SiGe BiCMOS process for excellent repeatability compared with similar GaAs amplifiers. All A-grade LTC6430-20 devices are tested and guaranteed for OIP3 at 380MHz. The LTC6430-20 is housed in a 4mm × 4mm, 24-lead, QFN package with an exposed pad for thermal management and low inductance. A single-ended 50Ω IF gain block with similar performance is also available, see the related LTC6431-20.
- Differential ADC Driver
- Differential IF Amplifier
- OFDM Signal Chain Amplifier
- 50Ω Balanced IF Amplifier
- 75Ω CATV Amplifier
- 700MHz to 800MHz LTE Amplifier
- Low Phase Noise Clock or LO Amplifier
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (3)
Demonstration circuit 2076A-B features the LTC6430-20 differential ADC Driver/IF Amplifier. The LTC6430-20 has a power gain of 20.8dB and is part of the LTC6430-YY amplifier series.
Demonstration circuit 2078A is a 75Ω input and 75Ω output push-pull CATV amplifier featuring the LTC6430‑20. The LTC6430-20 has a power gain of 20.8dB and is part of the LTC6430-YY amplifier series.
Demonstration circuit 2076A-A features the LTC6430-20 differential ADC Driver/IF Amplifier. The LTC6430-20 has a power gain of 20.8dB and is part of the LTC6430-YY amplifier series.
Tools & Simulations
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.
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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