Overview
The AD9543BCPZ-REEL7, produced by Analog Devices Inc., is a highly advanced integrated circuit designed for clock synchronization and jitter cleaning. This quad input, 10-output device supports dual digital phase-locked loops (DPLLs) and complies with various ITU and Telcordia standards. It is particularly suited for applications requiring precise clock generation and distribution, such as in telecommunications, optical transport networks, and base station clocking. The AD9543 operates on a single 1.8 V power supply and is packaged in a 48-lead LFCSP (7 mm × 7 mm) with an exposed pad, ensuring efficient thermal management and compact design.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | 1.71 | 1.8 | 1.89 | V | Operating range |
| Supply Current | - | - | - | - | Dependent on configuration and operation |
| Operating Temperature | -40°C | - | +85°C | °C | Full operating range |
| APLL VCO Frequency Range | - | - | - | - | APLL0: 2424 MHz to 3232 MHz, APLL1: 3232 MHz to 4040 MHz |
| Output Frequency Range | - | - | 500 × 10^6 Hz | Hz | Determined by driver functionality |
| Output Current | - | 12 mA | 15 mA | mA | Dependent on driver mode |
| Input Reference Frequency | 2 kHz | - | 750 MHz | Hz | Dual DPLL synchronization range |
Key Features
- Dual DPLLs synchronize 2 kHz to 750 MHz physical layer clocks, providing frequency translation with jitter cleaning of noisy references.
- Compliance with ITU-T G.8262, Telcordia GR-253, and other ITU standards for frequency, phase, and time of day delivery over service provider packet networks.
- Continuous frequency monitoring and reference validation for frequency deviation as low as 50 ppb.
- Programmable digital loop filter bandwidth: 10^-4 Hz to 1850 Hz.
- Two independent, programmable auxiliary NCOs (1 Hz to high frequency range).
- Internal capability to combine the low phase noise of a crystal resonator or crystal oscillator with the frequency stability and accuracy of a TCXO or OCXO.
- External EEPROM support for autonomous initialization.
- Built-in temperature monitor/alarm and temperature compensation for enhanced zero delay performance.
Applications
- PTP (IEEE 1588) and SyncE jitter cleanup and synchronization.
- Optical transport networks (OTN), SDH, and macro and small cell base stations.
- OTN mapping/demapping with jitter cleaning.
- Small base station clocking, including baseband and radio.
- Stratum 2, Stratum 3e, and Stratum 3 holdover, jitter cleanup, and phase transient control.
- JESD204B support for analog-to-digital converter (ADC) and digital-to-analog converter (DAC) clocking).
- Cable infrastructures and Carrier Ethernet).
Q & A
- What is the primary function of the AD9543BCPZ-REEL7? The AD9543BCPZ-REEL7 is a quad input, 10-output clock synchronizer and jitter cleaner, designed to synchronize clocks and clean jitter from noisy references.
- What are the supported input reference frequencies? The device supports input reference frequencies from 2 kHz to 750 MHz.
- What are the key standards that the AD9543 complies with? It complies with ITU-T G.8262, Telcordia GR-253, and other ITU standards for frequency, phase, and time of day delivery.
- What is the operating temperature range of the AD9543? The device operates over a temperature range of -40°C to +85°C.
- What is the package type and size of the AD9543BCPZ-REEL7? It is packaged in a 48-lead LFCSP (7 mm × 7 mm) with an exposed pad.
- What is the power supply voltage for the AD9543? The device operates on a single 1.8 V power supply.
- Does the AD9543 support external EEPROM for initialization? Yes, it supports external EEPROM for autonomous initialization.
- What are some of the key applications of the AD9543? Applications include PTP (IEEE 1588), SyncE, optical transport networks, base stations, and JESD204B support for ADC and DAC clocking.
- How does the AD9543 handle reference input failures? The device features digitally controlled loop and holdover circuitry that continuously generates a low jitter output signal even when all reference inputs fail.
- What is the frequency range of the APLL VCO in the AD9543? The APLL VCO frequency range is from 2424 MHz to 3232 MHz for APLL0 and from 3232 MHz to 4040 MHz for APLL1.
