INDUSTRY COMPONENT

Binary-weighted resistor

A precision resistor network with binary-weighted resistance values used in digital-to-analog converters and current source arrays for accurate signal processing.

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Component Specifications

Definition
A binary-weighted resistor is a specialized resistor network where individual resistors have values that follow a binary progression (e.g., R, 2R, 4R, 8R, etc.). This configuration is fundamental in constructing digital-to-analog converters (DACs) and current source arrays, enabling precise conversion of digital signals to analog voltages or currents by summing weighted contributions from each bit.
Working Principle
Operates on the principle of binary weighting, where each resistor corresponds to a specific bit in a digital input. When a digital signal is applied, switches activate corresponding resistors, creating a voltage or current output proportional to the binary-weighted sum of the active bits. This allows for accurate analog representation of digital data.
Materials
Thin-film or thick-film resistive materials (e.g., nickel-chromium, tantalum nitride) on ceramic or silicon substrates, with gold or silver conductive traces and protective coatings.
Technical Parameters
  • Tolerance ±0.1% to ±1%
  • Power Rating 0.1W to 0.5W per resistor
  • Resistance Range 10Ω to 1MΩ
  • Operating Temperature -55°C to +125°C
  • Temperature Coefficient ±25 ppm/°C to ±100 ppm/°C
Standards
ISO 9001, IEC 60115, MIL-PRF-914

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Binary-weighted resistor.

binary-weighted resistor DAC resistor network precision resistor current source array digital-to-analog converter electronic components Binary-weighted resistor in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Resistor Network / Current Source Array

A precision electronic component within a Digital-to-Analog Converter (DAC) that generates weighted current or voltage outputs corresponding to digital input bits.

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Engineering Analysis

Risks & Mitigation
  • Resistance mismatch leading to non-linearity in DAC output
  • Thermal drift affecting accuracy over temperature variations
  • Manufacturing defects causing short or open circuits
FMEA Triads
Trigger: Poor resistor matching during fabrication
Failure: Non-linear DAC output, resulting in inaccurate analog signals
Mitigation: Use laser trimming and precision materials; implement quality control with automated testing.
Trigger: Thermal expansion or environmental stress
Failure: Resistance drift, reducing long-term stability
Mitigation: Select low-temperature-coefficient materials; design with thermal management features.

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.1% typical for high-precision applications
Test Method
Electrical testing per IEC 60115, including resistance measurement, temperature cycling, and load life testing.

Buyer Feedback

★★★★☆ 4.7 / 5.0 (33 reviews)

"The technical documentation for this Binary-weighted resistor is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Computer, Electronic and Optical Product Manufacturing environments. No issues with the Binary-weighted resistor so far."

"Testing the Binary-weighted resistor now; the technical reliability results are within 1% of the laboratory datasheet."

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Frequently Asked Questions

What is the primary application of a binary-weighted resistor?

It is primarily used in digital-to-analog converters (DACs) and current source arrays to convert digital signals into precise analog voltages or currents.

How does binary weighting affect accuracy?

Binary weighting ensures each bit contributes proportionally to the output, enabling high-resolution conversion with minimal error, but requires precise resistor matching to avoid linearity issues.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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