---
title: "Clock Data Recovery Unit"
industry: "Computer, Electronic and Optical Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:CLOCK_DATA_RECOVERY_UNIT"
  data_integrity_hash: "3c36855e671a8d2605c6adcd4b55e157"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:CLOCK_DATA_RECOVERY_UNIT"
  data_source_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/clock-data-recovery-unit.md"
  official_resource_url: "https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/clock-data-recovery-unit"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "1.8-3.3 V input voltage, 0.1-6.4 Gbps data rate, -40 to 85°C ambient temperature"
    unit: "Gbps"
engineering_limits:
  max_safe_operating_point:
    value: 200
    unit: "ps"
    consequence: "Phase detector saturation due to excessive input jitter exceeding PLL bandwidth (typically 0.1-10 MHz), causing voltage-controlled oscillator frequency drift beyond capture range; thermal runaway in CMOS transistors at high temperatures increases leakage current, reducing signal-to-noise ratio below 20 dB"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Power supply ripple exceeding 50 mVpp at 100 kHz-10 MHz frequencies"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrated low-dropout regulator with 60 dB power supply rejection ratio and 100 pF on-chip decoupling capacitors"
  - node_2:
      trigger: "Electrostatic discharge event of 2 kV human body model on data input pins"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Dual-diode ESD protection cells with 5 Ω series resistors and 100 fF shunt capacitors at all I/O pads"
bom_nodes:
  phase-detector:
    type: "part"
    urn: "URN:CNFX:ME:PHASE_DETECTOR"
    interface_type: "physical-logic-coupled"
  loop-filter:
    type: "part"
    urn: "URN:CNFX:ME:LOOP_FILTER"
    interface_type: "physical-logic-coupled"
  voltage-controlled-oscillator-vco:
    type: "part"
    urn: "URN:CNFX:ME:VOLTAGE_CONTROLLED_OSCILLATOR_VCO"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/clock-data-recovery-unit.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "6f3003911564a78fe6faf8a767ca4287e856a14307718b45f0874d3f2a3bb191"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Clock Data Recovery Unit

## 1. Technical Definition
A circuit that extracts and reconstructs the clock signal from a serial data stream, enabling synchronous data recovery in serializer/deserializer systems.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **1.8-3.3 V input voltage, 0.1-6.4 Gbps data rate, -40 to 85°C ambient temperature**. Failure boundary: **Phase-locked loop loses lock at &gt;200 ps peak-to-peak jitter, input voltage drops below 1.62 V, or temperature exceeds 125°C junction temperature**, Mechanism: **Phase detector saturation due to excessive input jitter exceeding PLL bandwidth (typically 0.1-10 MHz), causing voltage-controlled oscillator frequency drift beyond capture range; thermal runaway in CMOS transistors at high temperatures increases leakage current, reducing signal-to-noise ratio below 20 dB**.

### 2.1 Analytical Physics Model
Governed by the **Joule Heating & Thermal Resistance**:

> **Primary Equation**: $P = I^2 R = \frac{V^2}{R}$  
> **Engineering Impact**: Governs heating element sizing for shrink tunnels/sealers.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| I | Current | Engineering Constant |
| R | Resistance | Engineering Constant |
| V | Voltage | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Power supply ripple exceeding 50 mVpp at 100 kHz-10 MHz frequencies | 8 | Phase-locked loop loses synchronization, causing bit error rate to exceed 10^-12 | Integrated low-dropout regulator with 60 dB power supply rejection ratio and 100 pF on-chip decoupling capacitors |
| Electrostatic discharge event of 2 kV human body model on data input pins | 8 | Gate oxide breakdown in input buffer transistors, increasing input capacitance beyond 2 pF | Dual-diode ESD protection cells with 5 Ω series resistors and 100 fF shunt capacitors at all I/O pads |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | Gbps | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Phase Detector](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/phase-detector.md) `(Standalone System)`
- [Loop Filter](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/loop-filter.md) `(Standalone System)`
- [Voltage-Controlled Oscillator (VCO)](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/voltage-controlled-oscillator-vco.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Signal Generator**, **Oscilloscope**, **Temperature-Controlled Test Chamber**  
**Downstream Applications**: High-Speed Network Switches, Data Center Server Boards, Telecommunications Equipment  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What is the primary function of a Clock Data Recovery Unit?
**A**: The Clock Data Recovery Unit extracts and reconstructs the clock signal from incoming serial data streams, enabling synchronous data recovery in serializer/deserializer (SerDes) systems for accurate data timing.

### Q: What are the key components in this Clock Data Recovery Unit?
**A**: The unit consists of three main components: a Phase Detector to compare input signal phases, a Loop Filter to smooth control signals, and a Voltage-Controlled Oscillator (VCO) to generate the recovered clock signal.

### Q: What applications use Clock Data Recovery Units?
**A**: These units are essential in high-speed communication systems including fiber optics, network switches, data centers, telecommunications equipment, and any system requiring precise clock synchronization from serial data transmission.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Clock Data Recovery Unit](https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/clock-data-recovery-unit)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: CLOCK_DATA_RECOVERY_UNIT | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: ec8eb19d
