Binary-weighted resistor: Resistance Range 10Ω to 1MΩ

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

Parameter	Typical range	Notes & selection driver
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

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

IEC 60115, MIL-PRF-914

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

Typical Suppliers & Equivalents

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.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Binary-weighted resistor

Manufacturer profiles associated with Binary-weighted resistor.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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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.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Binary-weighted resistor