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AK1590 - 1GHz Delta-Sigma Fractional-N Frequency Synthesizer

General Description

________________________________ ____________________________ 4 Absolute Maximum Ratings ________________________________ ___________________________ 6 Recommended Operating Range ________________________________ _______________________ 6 Electrical Characteristics ________________________________ _

Key Features

  •   Operating frequency: Programmable charge pump current: 60 to 1000MHz In a normal operating scheme, the charge pump current can be set in 8 steps, in the range from 20 to 168μA. In a Fast Lockup scheme, the charge pump current can be set in 8 steps, in the range from 0.8 to 2.3mA.     Supply Voltage: Separate power supply for the charge pump: On-chip power-saving features Frequency offset adjustable function: No glitch operation for AFC(Automatic Frequency Control) and DFM(Digital Frequen.

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Other Datasheets by AKM (Asahi Kasei Microdevices)

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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[AK1590] AK1590 1GHz Delta-Sigma Fractional-N Frequency Synthesizer 1. Overview AK1590 is a Delta-Sigma Fractional-N PLL (Phase Locked Loop) frequency synthesizer with a frequency switching function, covering a wide range of frequencies from 60 to 1000MHz. This product consists of an 18-bit Delta-Sigma modulator, a low-noise phase frequency comparator, a highly accurate charge pump, a reference divider, dual-module prescaler (P/P+1) and frequency offset adjustable circuits. 2. Features   Operating frequency: Programmable charge pump current: 60 to 1000MHz In a normal operating scheme, the charge pump current can be set in 8 steps, in the range from 20 to 168μA. In a Fast Lockup scheme, the charge pump current can be set in 8 steps, in the range from 0.8 to 2.3mA.