AK1543

400MHz - 1300MHz Delta-Sigma Fractional-N Frequency Synthesizer

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Description

400MHz - 1300MHz Delta-Sigma Fractional-N Frequency Synthesizer

Key Features

• Delta-Sigma Fractional-N provides fast lockup time, lower phase noise and lower spurious performance

• Operating Frequency: 400MHz to 1300MHz

• On-chip Charge Pump for Fast Lockup

• Charge Pump Current: (Normal Operating Scheme) 10.6A to 168.9A typ., 16steps

(Fast Lockup Scheme) 0.84mA to 2.32mA typ., 8steps.

• Supply Voltage: 2.7V to 5.5V (PVDD pin)

• Charge Pump Power Supply: Separately controlled、PVDD to 5.5V (CPVDD pin)

• On-chip Power-saving Function

•Current Consumption: 4.1mA typ. + Charge Pump Current

• On-chip PLL Lock Detection: Selectable Phase Frequency Detector (PFD) Output or Digital filtered Lock

Detect

• Package: 24pin QFN(0.5mm pitch, 4mm 4mm 0.75mm)

• Operating Temperature: -40°C to 85 °C

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Block Diagram

Block Diagram

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