Overview
The AD809BR-REEL7, produced by Analog Devices Inc., is a clock/frequency synthesizer integrated circuit designed to generate a 155.52 MHz ECL/PECL output clock from either a 19.44 MHz or a 9.72 MHz TTL/CMOS/ECL/PECL reference frequency. This device is particularly useful in applications requiring precise clock generation, such as in SONET/SDH/Fiber in the Loop systems. The AD809BR-REEL7 features an on-chip Voltage-Controlled Oscillator (VCO) that eliminates the need for external components for frequency synthesis, making it a cost-effective and efficient solution.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Frequency Range | ×8 Synthesis | 19.42 | 19.46 | - | MHz |
| Input Frequency Range | ×16 Synthesis | 9.71 | 9.73 | - | MHz |
| Output Frequency | - | - | 155.52 | - | MHz |
| Output Jitter (×8 Synthesis) | - | 1.6 | 2.9 | - | ps rms |
| Power Consumption | - | - | 90 | - | mW |
| Supply Voltage | - | +5 V | - | -5.2 V | V |
| Package Type | - | - | 16-Lead Small Outline IC Package (R-16A) | - | - |
Key Features
- On-Chip VCO: Eliminates the need for external components for frequency synthesis.
- Low Jitter: Provides low jitter on the synthesized clock, making it suitable for high-speed applications.
- Wide Operating Temperature Range: Operates over a wide temperature range, enhancing reliability in various environments.
- Single Power Supply: Can operate from a single power supply at either +5 V or –5.2 V.
- Input Signal Multiplexer: Supports loop-timed applications where a 155.52 MHz transmit bit clock is recovered from the received data.
- Adjustable Loop Dynamics: Allows the user to adjust loop dynamics through the selection of a damping factor capacitor.
Applications
The AD809BR-REEL7 is particularly suited for applications in SONET/SDH/Fiber in the Loop systems, where precise clock generation is critical. It can be used to create the transmit bit clock for one or more ports and supports distributed timing architectures. Other potential applications include high-speed data transmission systems and any scenario requiring a stable and low-jitter clock signal.
Q & A
- What is the output frequency of the AD809BR-REEL7?
The output frequency of the AD809BR-REEL7 is 155.52 MHz. - What are the input frequency ranges for the AD809BR-REEL7?
The input frequency ranges are 19.42 MHz to 19.46 MHz for ×8 synthesis and 9.71 MHz to 9.73 MHz for ×16 synthesis. - Does the AD809BR-REEL7 require external components for frequency synthesis?
No, the AD809BR-REEL7 features an on-chip VCO that eliminates the need for external components for frequency synthesis. - What is the power consumption of the AD809BR-REEL7?
The power consumption of the AD809BR-REEL7 is 90 mW. - What is the operating temperature range of the AD809BR-REEL7?
The AD809BR-REEL7 operates over a wide temperature range, but specific details are not provided in the sources; however, it is designed for robust operation in various environments. - Can the AD809BR-REEL7 operate from a single power supply?
Yes, the AD809BR-REEL7 can operate from a single power supply at either +5 V or –5.2 V. - What type of package does the AD809BR-REEL7 come in?
The AD809BR-REEL7 comes in a 16-Lead Small Outline IC Package (R-16A). - How does the AD809BR-REEL7 handle jitter?
The AD809BR-REEL7 exhibits low jitter on the synthesized clock and has a low-pass filter response to jitter applied to its input data. - What applications is the AD809BR-REEL7 suited for?
The AD809BR-REEL7 is suited for applications in SONET/SDH/Fiber in the Loop systems and other high-speed data transmission systems requiring precise clock generation. - Can the user adjust the loop dynamics of the AD809BR-REEL7?
Yes, the user can adjust the loop dynamics through the selection of a damping factor capacitor.
