IDT typically recommends that the 8V97051 RF_OUT output loaded with a 50Ω pull up resistance and with an AC coupling capacitor in series. However, the 50Ω pull up resistance can also be replaced by a choke.

The inductive load does not provide a broadband loading scheme. It is only recommended for high frequencies (i.e >1GHz), but not recommended for lower frequencies where a high L value would be needed to keep a reasonable output power (Impedance  ZL = 2*π*f*L).

However, the inductive loading has two main advantages: the output waveform is closer to a sine wave, and because every signal cycle, some energy is stored in the inductance, thus providing slightly optimized RF output power.

For other questions not addressed by the knowledge base, please submit a technical support request.

Documents

タイトル 他の言語 タイプ 形式 サイズ 日付
データシート
8V97051 Datasheet Datasheet PDF 1.00 MB
その他資料
8V97051 Low-Power Wideband RF Synthesizer / PLL (日本語) English Product Brief PDF 368 KB