ADCLK946BCPZ-REEL7: Ultra-Low Jitter 4.8GHz Clock Buffer IC by Analog Devices

The ADCLK946BCPZ-REEL7 represents Analog Devices' cutting-edge solution for high-frequency clock distribution challenges. This premium 1:6 fanout buffer delivers exceptional signal integrity for mission-critical timing applications across telecommunications, data centers, and advanced computing systems.

Technical Specifications

Parameter	Value
Max Frequency	4.8 GHz
Supply Voltage	2.97V - 3.63V
Input Types	CML, CMOS, LVDS, LVPECL
Output Type	LVPECL
Operating Temp	-40 C to +85 C
Package	24-LFCSP-VQ (4x4mm)

Advanced Performance Features

• Ultra-Low Jitter: <100 fs RMS for superior signal quality
• Multi-Standard Inputs: Automatic detection of CML/CMOS/LVDS/LVPECL signals
• Skew Optimization: <10 ps output-to-output skew
• Power Efficiency: 120 mW per output at 3.3V
• Industrial Robustness: -40 C to +85 C operation

Design Advantages

The ADCLK946BCPZ-REEL7 incorporates several innovative technologies that set it apart from conventional clock buffers:

1. Adaptive Input Stage

The proprietary input circuitry automatically detects and adapts to various signal standards (CML, CMOS, LVDS, LVPECL) without external configuration, simplifying board design and reducing component count.

2. Enhanced Power Distribution

Advanced on-chip decoupling and power supply rejection (PSRR > 60dB) ensure stable operation in noisy environments, critical for 5G base stations and high-density server applications.

3. Thermal Management

The 4x4mm LFCSP package features an exposed thermal pad that achieves 28 C/W junction-to-ambient thermal resistance, enabling reliable operation at maximum frequencies.

Application Scenarios

5G Infrastructure

In 5G mmWave systems, the ADCLK946BCPZ-REEL7's 4.8GHz capability and ultra-low jitter maintain signal integrity across massive MIMO arrays and RF front-end modules.

High-Speed Data Acquisition

For test equipment sampling >10GS/s, the buffer's <10ps skew ensures precise synchronization between multiple ADCs and FPGAs.

Optical Networking

The LVPECL outputs directly interface with SerDes chips in 400G/800G optical modules, with jitter performance meeting OIF-CEI standards.

Evaluation & Implementation

Analog Devices provides comprehensive support materials:

• EVAL-ADCLK946 evaluation board (available separately)
• SPICE models for signal integrity simulation
• Reference designs for common clock tree architectures
• Application notes on PCB layout best practices

Competitive Comparison

Compared to similar devices from Texas Instruments and ON Semiconductor, the ADCLK946BCPZ-REEL7 offers:

• 15% lower additive jitter
• Wider input voltage range (2.97V-3.63V vs typical 3.3V 5%)
• Smaller package footprint (4x4mm vs 5x5mm alternatives)

Purchasing Information

The ADCLK946BCPZ-REEL7 is available in tape-and-reel packaging (1000 units per reel) with standard 8-week lead time. Contact authorized distributors for volume pricing and sample requests.

For engineers designing next-generation high-speed systems, the ADCLK946BCPZ-REEL7 delivers unmatched performance in clock distribution. Its combination of multi-standard inputs, ultra-low jitter, and robust packaging makes it the ideal solution for demanding timing applications.