Overview
The AD9549BCPZ is a dual input network clock generator/synchronizer produced by Analog Devices Inc. This component is designed to provide flexible and robust clock generation and synchronization capabilities, making it suitable for a wide range of applications, particularly in telecommunications and data communication systems. It features advanced reference input handling, digital PLL, and various output drivers to ensure high accuracy and low jitter clock signals.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Input Frequencies (Sine Wave) | 10 kHz | 750 MHz | Minimum recommended slew rate: 40 V/μs | ||
| Input Frequencies (CMOS) | 8 kHz | 50 MHz | |||
| Input Frequencies (LVPECL/LVDS) | 8 kHz | 725 MHz | LVDS must be ac-coupled | ||
| Analog Supply Voltage (AVDD) | 2 V | ||||
| Digital Supply Voltage (DVDD) | 2 V | ||||
| Digital I/O Supply Voltage (DVDD_I/O) | 3.6 V | ||||
| DAC Supply Voltage (AVDD3) | 3.6 V | ||||
| Maximum Digital Input Voltage | 3.6 V | ||||
| Package Type | 64-Pin LFCSP |
Key Features
- Flexible reference inputs with wide frequency range support (8 kHz to 750 MHz)
- Digital PLL for reducing input time jitter and phase noise
- Multiple output drivers including HSTL, CMOS, LVPECL, and LVDS
- Holdover clock output and automatic/manual holdover and reference switchover
- Programmable input reference divider and feedback divider
- On-chip EEPROM for storing multiple power-up profiles
- Low noise LC-VCO system clock multiplier option
Applications
- Network synchronization and jitter cleanup
- SONET/SDH clocks up to OC-192, including FEC
- Stratum 2 and Stratum 3E reference clocks
- Wireless base stations and controllers
- Cable infrastructure and data communications
Q & A
- What is the AD9549BCPZ used for?
The AD9549BCPZ is used as a dual input network clock generator/synchronizer, providing flexible and robust clock generation and synchronization capabilities. - What are the input frequency ranges of the AD9549BCPZ?
The input frequencies range from 8 kHz to 750 MHz, depending on the input type (sine wave, CMOS, LVPECL, LVDS). - What types of output drivers does the AD9549BCPZ support?
The AD9549BCPZ supports HSTL, CMOS, LVPECL, and LVDS output drivers. - Does the AD9549BCPZ have holdover capabilities?
Yes, it has automatic/manual holdover and reference switchover capabilities. - What is the package type of the AD9549BCPZ?
The AD9549BCPZ comes in a 64-Pin LFCSP package. - Can the AD9549BCPZ store multiple power-up profiles?
Yes, it has on-chip EEPROM for storing multiple power-up profiles. - What are some common applications of the AD9549BCPZ?
Common applications include network synchronization, SONET/SDH clocks, Stratum 2 and Stratum 3E reference clocks, wireless base stations, and data communications. - What is the operating temperature range of the AD9549BCPZ?
The operating temperature range is from -40°C to +85°C, though specific details for this model are not explicitly mentioned in the provided sources, it is a common range for similar devices from Analog Devices. - Does the AD9549BCPZ support programmable dividers?
Yes, it supports programmable input reference and feedback dividers. - Is the AD9549BCPZ suitable for high-frequency applications?
Yes, it is suitable for high-frequency applications with its support for input frequencies up to 750 MHz and various output drivers.
