Overview
The AD9516-1BCPZ-REEL7, produced by Analog Devices Inc., is a 14-output clock generator that integrates a high-performance phase-locked loop (PLL) and a voltage-controlled oscillator (VCO). This component is designed to provide low jitter and phase noise, making it ideal for applications requiring precise timing and high data converter performance.
The on-chip VCO tunes from 2.30 GHz to 2.65 GHz, and an external VCO/VCXO up to 2.4 GHz can also be used. The device features automatic revertive and manual reference switchover/holdover modes, along with reference monitoring capability. It accepts LVPECL, LVDS, or CMOS references up to 250 MHz and includes programmable delays and digital or analog lock detect options.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| VCO Frequency Range | 2.30 GHz to 2.65 GHz | GHz | On-chip VCO |
| External VCO/VCXO Frequency | Up to 2.4 GHz | GHz | Optional |
| Reference Inputs | 1 differential or 2 single-ended | LVPECL, LVDS, or CMOS up to 250 MHz | |
| LVPECL Outputs | 6 pairs, up to 1.6 GHz | Each pair shares a 1-to-32 divider with coarse phase delay | |
| LVDS Outputs | 4 pairs, up to 800 MHz | Each pair shares two cascaded 1-to-32 dividers with coarse phase delay | |
| CMOS Outputs | Up to 250 MHz | Each LVDS output can be reconfigured as two CMOS outputs | |
| Additive Output Jitter (LVPECL) | 225 fs rms | fs | |
| Additive Output Jitter (LVDS) | 275 fs rms | fs | |
| Channel-to-Channel Skew | <10 ps | ps | Paired outputs |
| Package Type | 64-lead LFCSP | 9mm x 9mm with exposed pad | |
| Operating Supply Voltage | 3.3 V (nominal) | V | Single supply; VCP can be 5 V for external VCO |
| Operating Temperature Range | -40°C to +85°C | °C | Industrial range |
Key Features
- On-chip VCO tuning from 2.30 GHz to 2.65 GHz, with optional external VCO/VCXO up to 2.4 GHz
- Low jitter and phase noise performance for maximizing data converter performance
- Automatic revertive and manual reference switchover/holdover modes
- Reference monitoring capability
- Programmable delays in the path to the phase-frequency detector (PFD)
- Digital or analog lock detect, selectable
- Six LVPECL outputs (in three pairs) operating up to 1.6 GHz, each with 1-to-32 dividers and coarse phase delay
- Four LVDS outputs (in two pairs) operating up to 800 MHz, each with two cascaded 1-to-32 dividers and coarse phase delay
- Each LVDS output can be reconfigured as two CMOS outputs operating up to 250 MHz
- Fine delay adjust (Δt) on each LVDS output
- Automatic synchronization of all outputs on power-up and manual output synchronization available
Applications
- Low jitter, low phase noise clock distribution
- 10/40/100 Gb/sec networking line cards, including SONET, 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
Q & A
- What is the frequency range of the on-chip VCO in the AD9516-1?
The on-chip VCO tunes from 2.30 GHz to 2.65 GHz.
- Can the AD9516-1 use an external VCO/VCXO?
Yes, an external VCO/VCXO up to 2.4 GHz can be used.
- What types of reference inputs does the AD9516-1 support?
The AD9516-1 supports 1 differential or 2 single-ended reference inputs, including LVPECL, LVDS, or CMOS up to 250 MHz.
- How many LVPECL and LVDS outputs does the AD9516-1 have?
The AD9516-1 features six LVPECL outputs (in three pairs) and four LVDS outputs (in two pairs).
- What is the maximum frequency for LVPECL, LVDS, and CMOS outputs?
The LVPECL outputs operate up to 1.6 GHz, the LVDS outputs up to 800 MHz, and the CMOS outputs up to 250 MHz.
- What is the additive output jitter for LVPECL and LVDS outputs?
The additive output jitter is 225 fs rms for LVPECL outputs and 275 fs rms for LVDS outputs.
- What is the channel-to-channel skew for paired outputs?
The channel-to-channel skew is less than 10 ps for paired outputs.
- What is the package type and size of the AD9516-1?
The AD9516-1 is available in a 64-lead LFCSP package, measuring 9mm x 9mm with an exposed pad.
- What is the operating supply voltage and temperature range for the AD9516-1?
The operating supply voltage is 3.3 V (nominal), and the operating temperature range is -40°C to +85°C.
- What are some typical applications of the AD9516-1?
Typical applications include low jitter clock distribution, 10/40/100 Gb/sec networking line cards, forward error correction, clocking high-speed converters, high-performance wireless transceivers, and ATE and high-performance instrumentation.
