Overview
The AD9520-4BCPZ-REEL7, produced by Analog Devices Inc., is a high-performance clock generator and distribution IC. This device is part of the AD9520 family and is designed to provide multioutput clock distribution with subpicosecond jitter performance. It features an on-chip PLL and VCO, which can be tuned from 1.4 GHz to 1.8 GHz, and also supports an external VCO/VCXO up to 2.4 GHz. The AD9520-4 is particularly suited for applications requiring precise clock generation and distribution, such as high-performance wireless transceivers, ATE (Automated Test Equipment), and high-performance instrumentation.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage | 3.135 | 3.3 | 3.465 | V | Output driver power supply range |
| Operating Temperature | -40 | 85 | °C | Standard industrial range | |
| LVPECL Output Frequency | 1.6 GHz | Maximum frequency for LVPECL outputs | |||
| CMOS Output Frequency | 250 MHz | Maximum frequency for CMOS outputs when reconfigured | |||
| Divider Ratio | 1 | 32 | Range of divider ratios for each output group | ||
| Package Type | 64-lead LFCSP | Package type and pin count | |||
| VCO Frequency Range | 1.4 GHz | 1.8 GHz | On-chip VCO frequency range | ||
| External VCO/VCXO Frequency | 2.4 GHz | Maximum frequency for external VCO/VCXO |
Key Features
- Multioutput clock distribution with 12 LVPECL outputs in four groups, which can be reconfigured as CMOS outputs.
- On-chip PLL and VCO with a frequency range of 1.4 GHz to 1.8 GHz, and support for an external VCO/VCXO up to 2.4 GHz.
- Subpicosecond jitter performance.
- Divider and phase offset control for each output group, allowing for divide ratios from 1 to 32 and coarse time delay settings.
- Serial interface supporting both SPI and I²C ports for programming user-defined register settings stored in an in-package EEPROM.
- Single 3.3 V supply operation with separate output driver power supply range from 2.375 V to 3.465 V.
- Operating temperature range of -40°C to +85°C.
Applications
- High-performance wireless transceivers.
- Automated Test Equipment (ATE).
- High-performance instrumentation.
- Broadband infrastructures.
- DACs, DDSs, DDCs, DUCs, and MxFEs.
Q & A
- What is the maximum frequency of the LVPECL outputs on the AD9520-4?
The maximum frequency of the LVPECL outputs is 1.6 GHz.
- Can the LVPECL outputs be reconfigured as CMOS outputs?
- What is the operating temperature range of the AD9520-4?
The AD9520-4 operates over the standard industrial temperature range of -40°C to +85°C.
- What types of serial interfaces does the AD9520-4 support?
The AD9520-4 supports both SPI and I²C serial interfaces.
- What is the purpose of the in-package EEPROM?
The in-package EEPROM stores user-defined register settings for power-up and chip reset, which can be programmed through the serial interface.
- What is the frequency range of the on-chip VCO?
The on-chip VCO tunes from 1.4 GHz to 1.8 GHz.
- Can an external VCO/VCXO be used with the AD9520-4?
- What is the package type and pin count of the AD9520-4?
The AD9520-4 is available in a 64-lead LFCSP package.
- What are the typical applications of the AD9520-4?
The AD9520-4 is typically used in high-performance wireless transceivers, ATE, high-performance instrumentation, and broadband infrastructures.
- How many output groups does the AD9520-4 have, and what are their characteristics?
The AD9520-4 has four output groups, each with three outputs. Each group has a divider that allows both the divide ratio (from 1 to 32) and the phase offset or coarse time delay to be set.
