Key facts
- Brand
- Analog Devices
- Model
- AD9551
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-03
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Analog Devices AD9551 Multiservice Clock Generator Datasheet
The AD9551 multiservice clock generator accepts one or two reference inputs and provides up to two clock outputs. It uses a fractional‑N PLL with an on‑chip VCO and supports both LVPECL, LVDS, and CMOS output levels. The device includes automatic reference switchover, holdover mode, and a 3‑wire SPI interface for arbitrary rational frequency ratios.
Key features include dual reference inputs, dual clock outputs, a single 3.3 V supply, an output frequency range up to 900 MHz, jitter as low as 0.5 ps rms, and operation over –40 °C to +85 °C. Detailed pin configurations, register maps, and electrical specifications are provided for system integration.
Analog Devices AD9551 specifications
| Output frequency range | 0 – 900 MHz |
|---|---|
| Input frequency range | 19.44 MHz – 806 MHz |
| Supply voltage | 3.3 V (single supply) |
| Total current consumption (max output, both channels) | 195 mA |
| Operating temperature range | –40 °C to +85 °C |
| Reference inputs | Dual reference inputs |
| Programming interface | SPI‑compatible 3‑wire interface |
Source: Analog Devices AD9551 Multiservice Clock Generator Datasheet
All Analog Devices AD9551 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the output frequency range of the AD9551?
The AD9551 can generate clock outputs from 0 MHz up to 900 MHz.
From: Analog Devices AD9551 Multiservice Clock Generator Datasheet
How many reference inputs does the AD9551 provide?
It provides dual reference inputs that can be used simultaneously or as a backup.
From: Analog Devices AD9551 Multiservice Clock Generator Datasheet
What is the input frequency range of the AD9551?
The AD9551 accepts reference inputs from 19.44 MHz up to 806 MHz.
What output frequency range does the AD9551 support?
It can generate output frequencies from 10 MHz to 777.6 MHz.