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The AD9571ACPZLVD is a clock generator IC manufactured by ADI with multi-output functionality and an integrated PLL core ‌. This device has been optimized for Ethernet line card applications and is suitable for application scenarios that require low jitter and high phase stability.

The PLL section of the AD9571ACPZLVD includes a low-noise frequency and phase detector (PFD), a precision charge pump (CP), a low-phase noise voltage-controlled oscillator (VCO), and a pre-programmed feedback frequency divider and output frequency divider. By connecting an external crystal oscillator or reference clock to the REFCLK pin, the frequency can be locked to the input reference, up to a maximum of 156.25 MHz. The crossover ratio of each output divider and feedback divider is pre-programmed for the required output rate without the need for an external loop filter element, thus saving design time and circuit board space ‌.

Technical Specification

Type: Clock generator, fan-out distribution, Multiplexer

PLL: Yes

Input: Crystal

Output: CMOS, LVDS, LVPECL

Number of circuits: 1

Ratio - Input: Output: 1:10

Differential - Input: Output: None/Yes

Frequency - Maximum value: 156.25MHz

Frequency divider/frequency multiplier: Yes/No

Voltage - Power supply: 2.97V to 3.63V

Operating temperature: -40°C to 85°C

Installation type: Surface mount type

Package/Shell: 40-LFCSP

Application field

The AD9571ACPZLVD clock generator is widely used in devices such as Ethernet line cards, switches and routers that require low jitter and low phase noise clock generation. It also works with SCSI, SATA and PCI express support devices such as ‌.

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