Overview
The AD9520-5BCPZ from Analog Devices Inc. is a high-performance clock generator and distribution IC designed to provide multi-output clock distribution with subpicosecond jitter performance. This device features an on-chip PLL and VCO, allowing for precise clock signal generation and distribution. The on-chip VCO tunes from 2.53 GHz to 2.95 GHz, and an external VCO/VCXO up to 2.4 GHz can also be used. The device supports both SPI and I²C serial interfaces and includes an in-package EEPROM for storing user-defined register settings.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Maximum Operating Supply Voltage | 3.465 | V | VS = 3.3 V ± 5% |
| Minimum Operating Supply Voltage | 3.135 | V | VS = 3.3 V ± 5% |
| Output Driver Power Supply | 2.375 - 3.465 | V | Nominally 2.5 V to 3.3 V ± 5% |
| External VCO Operating Voltage | Up to 5.5 | V | |
| Package Type | 64-lead LFCSP | ||
| Operating Temperature Range | −40°C to +85°C | Standard industrial range | |
| LVPECL Output Frequency | Up to 1.6 GHz | ||
| CMOS Output Frequency | Up to 250 MHz | ||
| Divider Ratio | 1 to 32 | Per output group |
Key Features
- Multi-output clock distribution with subpicosecond jitter performance
- On-chip PLL and VCO with tuning range from 2.53 GHz to 2.95 GHz
- Support for external VCO/VCXO up to 2.4 GHz
- SPI and I²C serial interface support
- In-package EEPROM for storing user-defined register settings
- 12 LVPECL outputs in four groups, reconfigurable as CMOS outputs
- Divider and phase offset/coarse time delay settings per output group
- Single 3.3 V supply operation with separate output driver power supply
- Automatic and manual output synchronization
Applications
- Low jitter, low phase noise clock distribution
- Clock generation and translation for SONET, 10Ge, 10GFC, Synchronous Ethernet, OTU2/3/4
- Forward error correction (G.710)
- Clocking high-speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEs
- High-performance wireless transceivers
- ATE and high-performance instrumentation
- Broadband infrastructures
- Signal distribution solutions
- Wireless communication systems
- High-speed data transmission
Q & A
- What is the primary function of the AD9520-5BCPZ?
The AD9520-5BCPZ is a multi-output clock distribution IC with subpicosecond jitter performance, featuring an on-chip PLL and VCO.
- What are the supported serial interfaces for the AD9520-5BCPZ?
The device supports both SPI and I²C serial interfaces.
- What is the operating voltage range for the external VCO?
The external VCO can operate up to 5.5 V.
- How many LVPECL outputs does the AD9520-5BCPZ have?
The device features 12 LVPECL outputs in four groups.
- Can the LVPECL outputs be reconfigured?
Yes, any of the 1.6 GHz LVPECL outputs can be reconfigured as two 250 MHz CMOS outputs.
- What is the operating temperature range of the AD9520-5BCPZ?
The device operates over the standard industrial range of −40°C to +85°C.
- Does the AD9520-5BCPZ have an in-package EEPROM?
Yes, the device includes an in-package EEPROM that can be programmed through the serial interface to store user-defined register settings.
- What are some common applications of the AD9520-5BCPZ?
Common applications include low jitter clock distribution, clock generation for SONET and Ethernet, high-speed ADC/DAC clocking, and high-performance wireless transceivers.
- What is the package type of the AD9520-5BCPZ?
The device is available in a 64-lead LFCSP package.
- Can the output drivers be powered separately?
Yes, the output drivers can have a separate power supply ranging from 2.375 V to 3.465 V.
