ADCLK905 - Ultrafast SiGe ECL Clock/Data Buffer | Analog Devices
MPN: ADCLK905 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.34 | $6.34 |
| 10 | $5.8 | $58.00 |
| 100 | $5.2 | $520.00 |
| 500 | $4.7 | $2,350.00 |
| 1,000 | $4.2 | $4,200.00 |
Drop-in alternatives for ADCLK905 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ADCLK907
β Drop-Inπ Reference alternative (not in catalog)
ADCLK925
β Drop-Inπ Reference alternative (not in catalog)
ADCLK905BCPZ-WP
β Drop-Inπ Reference alternative (not in catalog)
ADCLK905BCPZ-R7
β Drop-Inπ Reference alternative (not in catalog)
NB7L14MNG
β Drop-Inπ Reference alternative (not in catalog)
MC100EP14DTG
β Drop-Inπ Reference alternative (not in catalog)
ADCLK905 Maximum Ratings & Electrical Characteristics
| Function | Clock/Data Buffer |
| Number of Inputs | 1 |
| Number of Outputs | 1 |
| Propagation Delay | 95 ps |
| Toggle Rate | 7.5 GHz |
| Output Rise/Fall Time | 60 ps typical |
| Random Jitter | 60 fs |
| Logic Family | ECL |
| Input Termination | On-chip at both input pins |
| Operating Temperature Range | -40Β°C to +125Β°C |
| Package | 16-Lead LFCSP (VQFN) with exposed pad |
| Mounting Type | Surface Mount |
| Process Technology | XFCB3 SiGe Bipolar |
| Supply Voltage | [DATA_NEEDED: Supply voltage range] |
| Power Dissipation | [DATA_NEEDED: Power dissipation] |
| RoHS Status | Compliant |
ADCLK905 Pin Configuration
| Pin 1 | Q β Non-inverting output |
| Pin 2 | Q β Inverting output |
| Pin 3 | VCC β Positive supply |
| Pin 4 | VCC β Positive supply |
| Pin 5 | D β Non-inverting input |
| Pin 6 | D β Inverting input |
| Pin 7 | VEE β Negative supply |
| Pin 8 | VEE β Negative supply |
| Pin 9 | GND β Ground |
| Pin 10 | GND β Ground |
| Pin 11 | NC β No connect |
| Pin 12 | NC β No connect |
| Pin 13 | NC β No connect |
| Pin 14 | NC β No connect |
| Pin 15 | NC β No connect |
| Pin 16 | NC β No connect |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADCLK905 is suitable for 6 applications: High-Speed ADC Clock Distribution, Data Buffering in Serial Links, Test and Measurement Equipment, RF and Microwave Systems, Data Acquisition Systems, Communications Infrastructure.
High-Speed ADC Clock Distribution
The ADCLK905's 7.5 GHz toggle rate and 60 fs random jitter make it ideal for distributing low-jitter clocks to high-speed ADCs. Its 95 ps propagation delay ensures minimal latency, and the ECL output levels are compatible with ADC clock inputs. The on-chip terminations simplify layout, reducing reflections and maintaining signal integrity at multi-GHz frequencies. This ensures the ADC achieves its rated SNR and SFDR by minimizing clock jitter-induced noise.
Recommended
Data Buffering in Serial Links
In high-speed serial communication systems, the ADCLK905 buffers data signals with minimal added jitter. Its 60 fs random jitter and 95 ps propagation delay preserve signal integrity, while the ECL outputs drive transmission lines effectively. The device supports toggle rates up to 7.5 GHz, making it suitable for 10GbE, Fibre Channel, and other high-speed protocols. On-chip terminations reduce external components, simplifying PCB design.
Recommended
Test and Measurement Equipment
The ADCLK905 is used in oscilloscopes, spectrum analyzers, and signal generators to distribute reference clocks with low jitter. Its 7.5 GHz toggle rate supports high-frequency signal generation, and the 60 fs jitter ensures accurate timing measurements. The extended temperature range (-40Β°C to +125Β°C) allows operation in various environments. The small LFCSP package saves board space in dense instrumentation designs.
Recommended
RF and Microwave Systems
In RF transceivers and microwave links, the ADCLK905 provides low-jitter clock distribution for mixers, modulators, and data converters. Its 60 fs jitter minimizes phase noise, critical for maintaining signal quality. The 7.5 GHz toggle rate supports high-frequency local oscillator signals. The ECL outputs are compatible with RF components, and the on-chip terminations reduce reflections in high-frequency layouts.
Recommended
Data Acquisition Systems
The ADCLK905 buffers sampling clocks for data acquisition systems, ensuring precise timing for analog-to-digital conversion. Its low jitter (60 fs) and high toggle rate (7.5 GHz) support high-speed sampling. The device's 95 ps propagation delay is minimal, preserving synchronization across multiple channels. The extended temperature range makes it suitable for industrial data loggers and medical imaging equipment.
Recommended
Communications Infrastructure
In base stations and network equipment, the ADCLK905 distributes clock signals to multiple line cards and processors. Its 7.5 GHz toggle rate and 60 fs jitter ensure reliable operation in high-speed backplanes. The ECL outputs drive long traces with minimal distortion, and the on-chip terminations simplify impedance matching. The device's small footprint and low power consumption are advantageous in space-constrained telecom designs.
Recommended
Recommended Products Summary
Engineering reference data for ADCLK905 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADCLK907 | ADCLK925 | NB7L14MNG |
|---|---|---|---|---|
| Package | 16-Lead LFCSP (VQFN) | 16-Lead LFCSP (VQFN) | 16-Lead LFCSP (VQFN) | 16-Lead LFCSP (VQFN) |
| Brand | Analog Devices | Analog Devices | Analog Devices | onsemi |
| Number of Outputs | 1 | 2 (dual) | 2 (fan-out) | 4 |
| Toggle Rate | 7.5 GHz | 7.5 GHz | 7.5 GHz | 7 GHz |
| Propagation Delay | 95 ps | 95 ps | 95 ps | 120 ps |
| Random Jitter | 60 fs | 60 fs | 60 fs | 100 fs |
| Logic Family | ECL | ECL | ECL | ECL |
| Operating Temperature Range | -40Β°C to +125Β°C | -40Β°C to +125Β°C | -40Β°C to +125Β°C | -40Β°C to +85Β°C |
Key Differentiators
- Ultra-low random jitter of 60 fs (vs NB7L14MNG)
- Higher toggle rate of 7.5 GHz (vs NB7L14MNG)
- Lower propagation delay of 95 ps (vs MC100EP14DTG)
Design Notes
For optimal performance at multi-GHz frequencies, use high-quality PCB materials such as Rogers or PTFE laminates. Ensure controlled impedance traces (50 ohms) for all high-speed inputs and outputs. Place the ADCLK905 close to the load to minimize trace length and reduce signal degradation. Use ground planes to provide a low-inductance return path.
Decouple the VCC and VEE pins with 0.1 uF and 10 uF capacitors placed as close to the pins as possible. Use a low-inductance ground connection to the exposed pad. The supply voltage range is not specified in the available data; refer to the datasheet for recommended operating conditions. Ensure adequate power supply stability to avoid jitter.
The LFCSP package has an exposed pad that must be soldered to a thermal land on the PCB. Provide a thermal via array under the pad to conduct heat to the ground plane. For high-frequency operation, the device may dissipate significant power; ensure the PCB copper area is sufficient to keep the junction temperature within limits.
Compliance Information
RoHS compliance is indicated by the 'Z' suffix in part numbers (e.g., ADCLK905BCPZ). Other compliance data not specified in the provided sources.
