Tektronix 80A05 Clock Recovery Module

The Tektronix 80A05 Clock Recovery Module recovers clock signals from high-speed serial data streams to enable precise timing measurements, jitter analysis, and signal integrity assessment. This module supports enumerated bit rates from 50 Mb/s to 12.6 Gb/s with continuous coverage from 100 Mb/s to 12.5 Gb/s, making it essential for telecommunications, datacom, and high-speed digital design applications requiring deterministic clock extraction and synchronization.

– Technical Specifications

Clock Recovery Ranges:
• Enumerated bit rates: 50 Mb/s to 12.6 Gb/s
• Continuous coverage: 100 Mb/s to 12.5 Gb/s
• Fixed rate: 4.25 Gb/s
• Option 10G user-selectable ranges: 3.267–4.250 Gb/s, 4.900–6.375 Gb/s, 9.800–12.60 Gb/s

Clock and Jitter Performance:
• Residual jitter: Ultra-low, as low as 250 fsRMS
• PLL bandwidth: Tunable from 100 kHz to 12 MHz
• Option 10G jitter: 2.5 psRMS (3.27–4.25 Gb/s), 2.5 psRMS (4.90–6.38 Gb/s), 500 mV typical
• Jitter tolerance: High
• Slew rate tolerance: Slow
• Time base stability: Excellent

Signal Interfaces:
• Input signal type: Single-ended or differential
• Input/output connectors: SMA female
• Data inputs: 2
• Data outputs: 2
• Trigger clock output: 1
• 10G clock output (Option 10G): 1
• Path impedance: Clean 50 Ω
• Input signal available unmodified on front panel output connectors with preserved high-frequency features

Triggering (80A07 rear panel):
• Trigger output: SMA, 50 Ω DC coupled
• Trigger input: SMA, 50 Ω DC coupled to 0 V
• Trigger input threshold: 1.5 V
• Trigger input minimum pulse width: 50 ns

– Key Features

• Ultra-low residual jitter enabling precise timing analysis across multi-gigabit data rates
• Tunable PLL bandwidth accommodates varying signal conditions and jitter profiles
• Dual data input and output paths support parallel signal processing
• Clean 50 Ω signal paths preserve signal fidelity for downstream analysis
• Internal clock routing synchronizes DSA8300*1 Series oscilloscope triggering

– Typical Applications

• Serial data communication analysis and validation
• Jitter characterization and tolerance testing
• High-speed digital signal integrity assessment
• Multi-gigabit telecommunications and datacom protocol debugging

– Compatibility & Integration

The module integrates with Tektronix DSA8300*1 Series sampling oscilloscopes and the 80C12B optical sampling module for optical rate testing. Power is supplied through the Tekprobe-Sampling interface.