TDA20140数据手册恩XP中文资料规格书

描述 Description

Overview Archived content is no longer updated and is made available for historical reference only.
The TDA20140 is an ultra-linear 8PSK satellite tuner that is intended for applications with challenging input power scenarios. It includes an integrated high-sensitivity LNA and a very large dynamic range. The device also includes a built-in RF Loop-Through (LPT).
TDA20140's built-in high-sensitivity LNA provides exceptional Noise Figure (NF) without the need for any external amplification. At the same time, the TDA20140's unique architecture allows it to achieve this NF for low-power signals without sacrificing linearity (IIP3, IIP2) when total power is high. The LNA includes multiple settings to allow power reduction when higher linearity is not required.
The tuner employs a fractional PLL that provides good phase noise while enabling a fine step size without adversely affecting lock time. Additional features include a built-in auto-tuning function, a single-ended RF input, and a buffered version of the crystal clock with optional dividers that is made available to drive companion ICs.
The device's flexible LPT includes a buffer and an attenuator with four settings. This allows flexibility when connected in cascade with a second satellite tuner. Good reverse isolation assures that interaction between the two tuners connected via the LPT path does not affect the desired signal.

特性 Features

•
Ultra high linearity

•
Wide dynamic range

• Integrated high-sensitivity LNA

•Excellent noise figure

• Very low phase noise

• LPT output

• Integrated RF power detector

•Built-in auto Tuning Machine (TM) eliminates the need for software calibration

• Buffered clock output

• Supports 8PSK and QPSK modulation format

• Supported symbol rates: 1 Msps to 60 Msps

•RF input frequency: 950 MHz to 2150 MHz

• Single 3.3 V power supply

• Lead-free 5 mm x 5 mm 28-pin QFN package

应用 Application

Operator-based 8PSK Set-Top Boxes (STBs)

Satellite enabled PC cards

Televisions with integrated satellite receivers