Structured Manufacturing Data (2026)

Sample-and-Hold Amplifier

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Sample-and-Hold Amplifier used in the Computer, Electronic and Optical Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Sample-and-Hold Amplifier is characterized by the integration of Input Buffer Amplifier and Sampling Switch. In industrial production environments, manufacturers listed on CNFX commonly emphasize Semiconductor (Silicon) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

An electronic circuit that captures and holds an analog voltage signal at a specific instant in time for subsequent processing.

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Product Specifications

Technical details and manufacturing context for Sample-and-Hold Amplifier

Definition
A critical component within an Analog-to-Digital Converter (ADC) circuit that acquires an input analog signal at the sampling instant and maintains a constant output voltage during the conversion period, ensuring the ADC digitizes a stable value.
Working Principle
Operates in two phases: 1) Sample Phase: The switch closes, connecting the input to a holding capacitor, allowing it to charge/discharge to the instantaneous input voltage. 2) Hold Phase: The switch opens, isolating the capacitor, which then maintains the sampled voltage for the ADC to process.
Common Materials
Semiconductor (Silicon), Dielectric Material (for capacitor)
Technical Parameters
  • Hold voltage accuracy and droop rate during the conversion period. (V) Per Request
Components / BOM
  • Input Buffer Amplifier
    Provides high input impedance to prevent loading the signal source and drives the sampling switch.
    Material: Semiconductor
  • Sampling Switch Part
    A transistor (MOSFET) that opens/closes to connect/disconnect the holding capacitor from the input.
    Material: Semiconductor
  • Holding Capacitor Part
    Stores the sampled analog charge, maintaining the output voltage during the hold phase.
    Material: Dielectric Material
  • Output Buffer Amplifier
    Provides low output impedance to drive the ADC input without affecting the held voltage on the capacitor.
    Material: Semiconductor

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Sample-and-Hold Amplifier.

high precision sample and hold amplifier analog voltage signal capture circuit semiconductor sample hold amplifier electronic manufacturing hold capacitor amplifier optical product signal processing amplifier

Applied To / Applications

This component is essential for the following industrial systems and equipment:

ADC Circuit
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Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
droop rate: 0.1mV/μs to 10mV/μs
temperature: -40°C to +85°C (industrial grade), -55°C to +125°C (military grade)
voltage range: ±5V to ±18V supply, input signal within supply rails
acquisition time: 10ns to 1μs typical
hold capacitance: 10pF to 1000pF
Media Compatibility
✓ DC voltage signals ✓ Low-frequency AC signals (<100kHz) ✓ Sensor output conditioning
Unsuitable: High-frequency RF signals (>10MHz) or environments with severe electromagnetic interference
Sizing Data Required
  • Input signal bandwidth (Hz)
  • Required acquisition time (seconds)
  • Hold duration and accuracy requirement (droop rate in V/s)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Sample timing drift
Cause: Degradation of timing components (e.g., capacitors, clock circuits) due to thermal stress, aging, or voltage fluctuations, leading to inaccurate sample acquisition timing.
Hold capacitor leakage
Cause: Deterioration of the hold capacitor (e.g., dielectric breakdown, contamination) causing charge loss during the hold phase, resulting in output voltage droop and signal inaccuracy.
Maintenance Indicators
  • Audible: Unusual high-frequency noise or oscillations from the amplifier circuit, indicating potential instability or component failure.
  • Visual: Erratic or drifting output readings on monitoring equipment (e.g., oscilloscope, data logger) during hold periods, suggesting capacitor or timing issues.
Engineering Tips
  • Implement regular calibration and timing verification using precision test equipment to detect and correct drift before it affects performance.
  • Maintain stable operating conditions (e.g., controlled temperature, clean power supply) to reduce stress on sensitive components like capacitors and clock circuits.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 Quality Management Systems IEC 61000-6-2 Electromagnetic Compatibility (EMC) EN 61326-1 Electrical Equipment for Measurement, Control and Laboratory Use
Manufacturing Precision
  • Hold Step Settling Time: +/-0.01% of final value
  • Aperture Jitter: +/-2ps RMS
Quality Inspection
  • Dynamic Performance Test (SINAD, THD, ENOB)
  • Temperature Drift Verification (-40°C to +85°C)

Factories Producing Sample-and-Hold Amplifier

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the primary function of a Sample-and-Hold Amplifier in electronic manufacturing?

A Sample-and-Hold Amplifier captures an analog voltage signal at a precise moment and holds it constant for subsequent processing, ensuring accurate signal conversion in applications like analog-to-digital conversion and signal conditioning.

What materials are used in the construction of this Sample-and-Hold Amplifier?

This amplifier utilizes silicon semiconductors for active components and dielectric materials for the holding capacitor, ensuring reliable performance, low leakage, and stability in computer, electronic, and optical product manufacturing.

How does the BOM (Bill of Materials) contribute to the amplifier's performance?

The BOM includes an input buffer amplifier for impedance matching, a sampling switch for precise timing, a holding capacitor for signal retention, and an output buffer amplifier for driving loads, together enabling high accuracy and minimal signal degradation.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Computer, Electronic and Optical Product Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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