Overview
The AD9515BCPZ-REEL7, produced by Analog Devices Inc., is a high-performance clock distribution IC designed to meet the stringent requirements of low jitter and phase noise in various applications. This device features two independent clock outputs, one of which is an LVPECL output operating up to 1.6 GHz, and the other can be set to either LVDS (up to 800 MHz) or CMOS (up to 250 MHz) levels. The AD9515 is particularly suited for data converter clocking applications where subpicosecond jitter is crucial for maximum converter performance.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| LVPECL Output Frequency | - | - | 1.6 GHz | - | - |
| LVDS Output Frequency | - | - | 800 MHz | - | - |
| CMOS Output Frequency | - | - | 250 MHz | - | - |
| Programmable Divider Range | 1 | - | 32 | - | - |
| LVPECL Output Rise Time | 60 ps | 100 ps | - | - | 20% to 80%, measured differentially |
| LVPECL Output Fall Time | 60 ps | 100 ps | - | - | 80% to 20%, measured differentially |
| Propagation Delay (LVPECL) | 355 ps | 480 ps | 635 ps | - | Divide = 1 |
| Power Supply Voltage | - | - | 3.3 V | - | - |
| Operating Temperature Range | -40°C | - | +85°C | - | - |
| Package Type | - | - | 32-Lead LFCSP | - | - |
Key Features
- Two independent clock outputs: one LVPECL output up to 1.6 GHz, and one output configurable to either LVDS (up to 800 MHz) or CMOS (up to 250 MHz) levels.
- Programmable dividers with a range from 1 to 32 for each output.
- Phase select for coarse delay adjustment and fine adjustment with three selectable full-scale delay values (1.5 ns, 5 ns, and 10 ns) each with 16 steps.
- No external controller required for operation or setup; programmed using 11 pins (S0 to S10) with 4-level logic.
- Low additive output jitter of 225 fs rms.
- Single 3.3 V supply operation.
- Operating temperature range from -40°C to +85°C.
Applications
The AD9515 is ideally suited for data converter clocking applications where maximum converter performance is achieved by encoding signals with subpicosecond jitter. Other applications include:
- Wireless infrastructure
- Instrumentation
- Networking
- Broadband
- Automatic Test Equipment (ATE)
- Any application demanding predictable and low-jitter clock performance.
Q & A
- What are the output options for the AD9515?
The AD9515 offers two independent clock outputs: one LVPECL output up to 1.6 GHz, and one output configurable to either LVDS (up to 800 MHz) or CMOS (up to 250 MHz) levels.
- What is the range of the programmable dividers?
The programmable dividers can be set to divide by a selected set of integers ranging from 1 to 32.
- How is the phase adjustment achieved?
The phase of one clock output relative to the other can be set using a divider phase select function for coarse timing adjustment and a delay element with fine adjustment.
- Does the AD9515 require an external controller?
No, the AD9515 does not require an external controller for operation or setup. It is programmed using 11 pins (S0 to S10) with 4-level logic.
- What is the power supply voltage for the AD9515?
The AD9515 operates from a single 3.3 V supply.
- What is the operating temperature range of the AD9515?
The operating temperature range is from -40°C to +85°C.
- What is the package type of the AD9515?
The AD9515 is available in a 32-lead LFCSP package.
- What are the typical applications of the AD9515?
The AD9515 is typically used in data converter clocking applications, wireless infrastructure, instrumentation, networking, broadband, and ATE.
- How is the jitter performance of the AD9515?
The AD9515 features low additive output jitter of 225 fs rms.
- Can the AD9515 be used in high-frequency applications?
Yes, the AD9515 is suitable for high-frequency applications, with the LVPECL output operating up to 1.6 GHz.
