Overview
The ADCLK946BCPZ-REEL7 is an ultrafast clock fanout buffer produced by Analog Devices Inc. It is fabricated on the proprietary XFCB3 silicon germanium (SiGe) bipolar process, making it highly suitable for high-speed applications requiring low jitter. This device features a differential input with center-tapped, differential, 100 Ω on-chip termination resistors and supports various input types including dc-coupled LVPECL, CML, 3.3 V CMOS (single-ended), and ac-coupled 1.8 V CMOS, LVDS, and LVPECL. The ADCLK946BCPZ-REEL7 is available in a 24-lead LFCSP package and operates over the standard industrial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Description |
|---|---|
| Input Types | dc-coupled LVPECL, CML, 3.3 V CMOS (single-ended), ac-coupled 1.8 V CMOS, LVDS, LVPECL |
| Input Termination | Center-tapped, differential, 100 Ω on-chip termination resistors |
| Output Drivers | Six full-swing emitter-coupled logic (ECL) output drivers |
| Output Voltage Swing | 800 mV each side into 50 Ω terminated to VCC − 2 V (total differential output swing of 1.6 V) |
| Package | 24-lead LFCSP (4mm x 5mm w/ EP) |
| Operating Temperature Range | −40°C to +85°C |
| Jitter Performance | 75 fs rms broadband random jitter |
Key Features
- Ultrafast clock fanout buffer with low jitter performance (75 fs rms broadband random jitter)
- Supports multiple input types: dc-coupled LVPECL, CML, 3.3 V CMOS (single-ended), and ac-coupled 1.8 V CMOS, LVDS, LVPECL
- Six full-swing emitter-coupled logic (ECL) output drivers
- On-chip input terminations with center-tapped, differential, 100 Ω resistors
- VREF pin available for biasing ac-coupled inputs
- Designed for high-speed applications with proper transmission line terminations
Applications
- Low jitter clock distribution
- Clock and data signal restoration
- Level translation
- Wireless communications
- Wired communications
- Medical and industrial imaging
- ATE (Automated Test Equipment) and high-performance instrumentation
Q & A
- What is the ADCLK946BCPZ-REEL7 used for?
The ADCLK946BCPZ-REEL7 is used as an ultrafast clock fanout buffer in high-speed applications requiring low jitter.
- What types of inputs does the ADCLK946BCPZ-REEL7 support?
The device supports dc-coupled LVPECL, CML, 3.3 V CMOS (single-ended), and ac-coupled 1.8 V CMOS, LVDS, and LVPECL inputs.
- How many output drivers does the ADCLK946BCPZ-REEL7 have?
The device features six full-swing emitter-coupled logic (ECL) output drivers.
- What is the output voltage swing of the ADCLK946BCPZ-REEL7?
The output drivers are designed to directly drive 800 mV each side into 50 Ω terminated to VCC − 2 V, resulting in a total differential output swing of 1.6 V.
- In what package is the ADCLK946BCPZ-REEL7 available?
The device is available in a 24-lead LFCSP package.
- What is the operating temperature range of the ADCLK946BCPZ-REEL7?
The device operates over the standard industrial temperature range of −40°C to +85°C.
- What is the jitter performance of the ADCLK946BCPZ-REEL7?
The device has a jitter performance of 75 fs rms broadband random jitter.
- What are some common applications of the ADCLK946BCPZ-REEL7?
Common applications include low jitter clock distribution, clock and data signal restoration, level translation, wireless and wired communications, medical and industrial imaging, and ATE and high-performance instrumentation.
- How should the input signals be terminated for the ADCLK946BCPZ-REEL7?
The input signals should be terminated using center-tapped, differential, 100 Ω on-chip termination resistors.
- Is there a specific pin for biasing ac-coupled inputs on the ADCLK946BCPZ-REEL7?
Yes, a VREF pin is available for biasing ac-coupled inputs.
