Overview
The LTC6952IUKG#PBF, produced by Analog Devices Inc., is a high-performance, ultralow jitter clock generation and distribution IC. This integrated circuit is designed to support JESD204B/C subclass 1 standards and features a Phase Locked Loop (PLL) core. The PLL includes a reference divider, phase-frequency detector (PFD) with a phase-lock indicator, an ultralow noise charge pump, and an integer feedback divider. The device is particularly suited for applications requiring precise clock generation and distribution with minimal jitter.
Key Specifications
| Parameter | Description |
|---|---|
| PLL Frequency Range | Up to 4.5 GHz |
| Number of Outputs | Eleven outputs (configurable as up to five JESD204B/C clock/SYSREF pairs plus one general purpose output) |
| Output Configuration | Each output has individually programmable frequency divider and output driver |
| Input Common Mode Voltage | 800 mVp-p differential |
| Input Duty Cycle | 50% |
| Minimum Input Slew Rate | 100 V/μs |
| Input Resistance Differential | 250 Ω |
| Input Capacitance Differential | 1.0 pF |
| Package Type | 52-Lead (7mm × 8mm) Plastic QFN Exposed Pad |
| Junction Temperature Range | –40°C to 125°C |
Key Features
- Ultralow jitter PLL core with up to 4.5 GHz frequency range
- Support for JESD204B/C subclass 1 standards
- Eleven configurable outputs with individual frequency dividers and output drivers
- Coarse half-cycle digital delays and fine analog time delays for precise phase alignment
- Low noise charge pump and integer feedback divider
- Phase-frequency detector (PFD) with phase-lock indicator
- CMOS SYNC/SYSREF request input
Applications
- High-speed data converters (ADCs and DACs)
- Wireless communication systems
- Radar and military communication systems
- High-performance test and measurement equipment
- Medical imaging and diagnostic equipment
Q & A
- What is the maximum frequency range of the LTC6952 PLL?
The LTC6952 PLL supports frequencies up to 4.5 GHz.
- How many outputs does the LTC6952 have, and how can they be configured?
The LTC6952 has eleven outputs, which can be configured as up to five JESD204B/C clock/SYSREF pairs plus one general purpose output, or simply eleven general purpose clock outputs.
- What is the input common mode voltage range for the LTC6952?
The input common mode voltage range is 800 mVp-p differential.
- What is the minimum input slew rate required for the LTC6952?
The minimum input slew rate is 100 V/μs.
- What is the package type and junction temperature range of the LTC6952IUKG#PBF?
The package type is a 52-Lead (7mm × 8mm) Plastic QFN Exposed Pad, and the junction temperature range is –40°C to 125°C.
- Does the LTC6952 support JESD204B/C standards?
- How can the outputs of the LTC6952 be synchronized?
The outputs can be synchronized and set to precise phase alignment using individual coarse half-cycle digital delays and fine analog time delays.
- What are some typical applications of the LTC6952?
Typical applications include high-speed data converters, wireless communication systems, radar and military communication systems, high-performance test and measurement equipment, and medical imaging and diagnostic equipment.
- What is the input resistance and capacitance of the LTC6952?
The input resistance is 250 Ω, and the input capacitance is 1.0 pF.
- Does the LTC6952 have a phase-lock indicator?
