TDA20152数据手册恩XP中文资料规格书

描述 Description

TDA20152 is a general-purpose high-performance 8PSKsatellite tuner that is optimized for Free To Air (FTA) applications. It includes an integrated high-sensitivity LowNoise Amplifier (LNA) and a large dynamic range. The device also includes a built-in RFLoop-Through (LPT). To address FTAapplications, the TDA20152's builtin high-sensitivityLNAprovides exceptional Noise Figure (NF) without the need for anyexternal amplification.However, unlike manycompetitive FTAtuners, the TDA20152's unique architecture allows it to achieve this NFfor low-power signals without sacrificing linearity(IIP3, IIP2) when total power is high. This characteristic makes the TDA20152 ideal for FTAapplications. The LNAalso includes multiple settings to allowpower reduction when higher linearityis not required.

To achieve 8PSKcompliance, the tuner employs a fractional PLL that provides excellent phase noise while enabling fine step size without adverselyaffecting lock time. Additional features include a built-in auto-tuning function, a single-ended RF input and a buffered version of the crystal clockwith optional dividers that is made available to drive companion ICs.

The device's flexible LPTincludes a buffer and an attenuator with four settings. This allows flexibilitywhen connected in cascade with a second satellite tuner.Good reverse isolation assures that interaction between the two tuners connected via the LPTpath does not affect the desired signal.\r

特性 Features

• Integrated high-sensitivityLNA
• Excellent noise figure
• Verylowphase noise
• Excellent linearity
• Wide dynamic range
• LPToutput
• Integrated RFpower detector
• Built-in auto tuning machine eliminates the need for software calibration
• Buffered clock output
• Supports 8PSKandQPSKmodulation formats
• Supported symbol rates: 1 Msps to 60 Msps
• RFinput frequency: 950 MHzto 2150 MHz
• Single 3.3 Vpower supply
• Lead-free 5 mm x5 mm 28-pinQFNpackage

应用 Application

• FTASet-Top Boxes (STBs)
• Satellite enabled PCcards
• Televisions with integrated satellite receivers