---
title: "Phase Detector"
industry: "Computer, Electronic and Optical Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:PHASE_DETECTOR"
  data_integrity_hash: "e504fda05bd0a1029707208ae427f2e8"
  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:PHASE_DETECTOR"
  data_source_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/phase-detector.md"
  official_resource_url: "https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/phase-detector"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-5 V input signal range, 0-360° phase difference measurement, -40°C to 85°C ambient temperature"
    unit: "V/rad"
engineering_limits:
  max_safe_operating_point:
    value: 5.5
    unit: "V"
    consequence: "Schottky diode forward voltage drop mismatch (0.3-0.4 V variation) creates phase offset error, thermal noise (4kT/R) at 300K exceeds comparator threshold at 10 mV, charge injection from CMOS switches introduces 5-10 ps timing jitter"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Input signal amplitude exceeding 5.5 V peak-to-peak"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement 5.1 V Zener diode clamping at both input terminals with 100 Ω series resistance"
  - node_2:
      trigger: "Ambient temperature exceeding 125°C for &gt;1000 hours"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate on-chip temperature sensor with automatic shutdown at 110°C using PTAT circuit with 2 mV/°C coefficient"
bom_nodes:
  input-bufferamplifier:
    type: "part"
    urn: "URN:CNFX:ME:INPUT_BUFFERAMPLIFIER"
    interface_type: "physical-logic-coupled"
  core-detector-circuit-e-g-xor-gate-flip-flops:
    type: "component"
    urn: "URN:CNFX:ME:CORE_DETECTOR_CIRCUIT_E_G_XOR_GATE_FLIP_FLOPS"
    interface_type: "physical-logic-coupled"
  output-stagecharge-pump:
    type: "part"
    urn: "URN:CNFX:ME:OUTPUT_STAGECHARGE_PUMP"
    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/phase-detector.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "c1943a064c2aaa14328e75c01abe86cb99815666328c9f2129a9e5a452bc0afb"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Phase Detector

## 1. Technical Definition
A circuit that compares the phase difference between two input signals and produces an output voltage proportional to that difference.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-5 V input signal range, 0-360° phase difference measurement, -40°C to 85°C ambient temperature**. Failure boundary: **Input voltage exceeding 5.5 V causes comparator saturation, phase difference &gt;360° creates ambiguous output, temperature &gt;125°C causes semiconductor junction breakdown**, Mechanism: **Schottky diode forward voltage drop mismatch (0.3-0.4 V variation) creates phase offset error, thermal noise (4kT/R) at 300K exceeds comparator threshold at 10 mV, charge injection from CMOS switches introduces 5-10 ps timing jitter**.

### 2.1 Analytical Physics Model
Governed by the **Combined Measurement Uncertainty**:

> **Primary Equation**: $u_c = \sqrt{\sum u_i^2}$  
> **Engineering Impact**: Defines the precision confidence interval for inspection.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| u_i | Standard Uncertainty components | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Input signal amplitude exceeding 5.5 V peak-to-peak | 8 | Comparator output saturation at rail voltage (0 V or 5 V) | Implement 5.1 V Zener diode clamping at both input terminals with 100 Ω series resistance |
| Ambient temperature exceeding 125°C for &gt;1000 hours | 8 | PN junction thermal runaway causing permanent gain reduction &gt;3 dB | Integrate on-chip temperature sensor with automatic shutdown at 110°C using PTAT circuit with 2 mV/°C coefficient |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Input Buffer/Amplifier](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/input-bufferamplifier.md) `(Standalone System)`
- [Output Stage/Charge Pump](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/output-stagecharge-pump.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Signal Generator**, **Oscilloscope**, **Power Supply Unit**  
**Downstream Applications**: Communication Systems, Radar Equipment, Medical Imaging Devices  

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

### Q: What is the primary application of this phase detector in electronic manufacturing?
**A**: This phase detector is primarily used in phase-locked loops (PLLs), communication systems, and signal processing equipment where precise phase comparison between two electronic signals is required for synchronization or measurement purposes.

### Q: How does the semiconductor silicon material affect the phase detector's performance?
**A**: Silicon semiconductor construction ensures high reliability, temperature stability, and fast switching speeds, making it suitable for high-frequency applications in computer and optical product manufacturing environments.

### Q: What are the key components in the BOM that determine accuracy?
**A**: The core detector circuit (XOR gate or flip-flops) provides the phase comparison function, while the input buffer/amplifier ensures clean signal input, and the output stage/charge pump converts the phase difference to a proportional voltage output with minimal error.

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

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Phase Detector](https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/phase-detector)**

### 🌐 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**: PHASE_DETECTOR | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 10bc4a76
