Low-Jitter Clock Generator

Product Overview

The AC1571 is a PLL-based clock generator for 5G base station applications. This chip utilizes fully digital phase-locked loop (PLL) technology to achieve optimal high-frequency, low-phase-noise performance, along with low power consumption and high PSRR.

Typical Applications:

Wireless base stations

Ethernet line cards, switches, and routers

SCSI, SATA, and PCI-Express

Low-jitter, low-phase-noise clock generator

Technical Indicators

AC1571

Main Features
7 single-ended LVCMOS outputs, 30Ω output impedance	6 single-ended LVCMOS outputs, 25MHz frequency
7 single-ended LVCMOS outputs, 30Ω output impedance	1 single-ended LVCMOS output with a 33.33MHz CPU clock signal
3 pairs of LVPECL outputs	1 differential LVPECL output pair with an output frequency of 156.25 MHz
3 pairs of LVPECL outputs	2 selectable differential LVPECL output pairs with output frequencies of 100MHz and 125MHz
Selectable external crystal or single-ended input source
Crystal oscillator interface for a 25MHz crystal
VCO frequency	2.5GHz
RMS Phase Jitter at 125MHz, using a 25MHz crystal (12kHz-20MHz)	0.188ps (typical)
Power Supply Noise Rejection (PSNR)	-70dB
Supply Voltage	3.3v
Ambient Operating Temperature	-40°C to 85°C
40-pin VFQFN Package	6.0×6.0×0.85mm

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