ADS1286UG4 Equivalent & Substitute Parts

Part Overview

The ADS1286UG4 is a 12-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, configured as a single-input SAR (Successive Approximation Register) architecture device in an 8-SOIC surface mount package. This component operates with 5V analog and digital supply voltages, achieves a 20 kHz sampling rate, and interfaces via SPI protocol with an external voltage reference.

The ADS1286UG4 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this data acquisition component.

Substiute Parts

ADS1286UG4

Texas InstrumentsIn Stock: 935ADS1286UG4 Datasheet

Current PartRFQ

ADS1286UA

Burr BrownIn Stock: 28219ADS1286UA Datasheet

Parametric EquivalentRFQ

ADS1286UC

Burr BrownIn Stock: 2583ADS1286UC Datasheet

Parametric EquivalentRFQ

ISL2671286IBZ

Renesas Electronics CorporationIn Stock: 2001ISL2671286IBZ Datasheet

DirectRFQ

LTC1286IS8#PBF

Analog Devices Inc.In Stock: 50336LTC1286IS8#PBF Datasheet

MFR RecommendedRFQ

LTC1286IS8#TRPBF

Analog Devices Inc.In Stock: 1808LTC1286IS8#TRPBF Datasheet

MFR RecommendedRFQ

ADS1286UB

Burr BrownIn Stock: 2008ADS1286UB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ADS1286UG4 is determined by strict alignment across the following critical parameters:

• Resolution: 12 bits (mandatory match)
• Sampling Rate: 20 kHz (mandatory match)
• Input Configuration: Single differential input (mandatory match)
• Interface Protocol: SPI (mandatory match)
• Architecture: SAR (mandatory match)
• Reference Configuration: External (mandatory match)
• Supply Voltages: Analog 5V and Digital 5V (mandatory match)
• Operating Temperature Range: -40°C to 85°C (mandatory match)
• Package: 8-SOIC surface mount (mandatory match)

Substitute parts are grouped into the following categories based on these parameters:

Parametric Equivalents (Full parameter alignment): ADS1286UA, ADS1286UC, ADS1286UB

Direct Manufacturer Equivalent (Full parameter alignment, different manufacturer): ISL2671286IBZ

MFR Recommended Alternatives (Functional equivalence with noted parameter variations): LTC1286IS8#PBF, LTC1286IS8#TRPBF

Parameter Comparison

Engineering Selection Recommendations

Preferred Substitutes (Full Parameter Alignment, Active Status)

ADS1286UA, ADS1286UC, and ADS1286UB are parametric equivalents manufactured by Burr Brown with active product status. These parts maintain identical electrical specifications to the ADS1286UG4 across all critical parameters: 12-bit resolution, 20 kHz sampling rate, single differential input, SPI interface, SAR architecture, external reference configuration, 5V supply voltages, and -40°C to 85°C operating range. All three are available in 8-SOIC surface mount packaging. These represent the most direct substitution path for applications requiring the original ADS1286UG4 specifications.

Alternative Substitute (Full Parameter Alignment, Obsolete Status)

ISL2671286IBZ from Renesas Electronics Corporation provides full parametric equivalence to the ADS1286UG4 with identical electrical and mechanical specifications. However, this part carries obsolete product status, limiting its suitability for long-term supply chain requirements despite current inventory availability.

Functional Alternatives (Parameter Variation)

LTC1286IS8#PBF and LTC1286IS8#TRPBF from Analog Devices Inc. are manufacturer-recommended alternatives with active product status and ROHS3 compliance. These parts differ in sampling rate (12.5 kHz versus 20 kHz) and supply voltage range (4.5V to 9V versus fixed 5V). The LTC1286IS8#TRPBF variant is supplied in Tape & Reel packaging, while LTC1286IS8#PBF is supplied in Tube packaging. Selection of these alternatives requires confirmation that the reduced sampling rate and expanded supply voltage tolerance are compatible with the target application.

Frequently Asked Questions (FAQ)

Q: Can ADS1286UA, ADS1286UC, or ADS1286UB be used as direct replacements for ADS1286UG4?

A: Yes. These three Burr Brown parts are parametric equivalents with identical specifications across all critical parameters: 12-bit resolution, 20 kHz sampling rate, single differential input, SPI interface, SAR architecture, external reference, 5V supply voltages, -40°C to 85°C operating range, and 8-SOIC surface mount package. All three carry active product status, making them suitable for production applications.

Q: What is the key difference between the LTC1286IS8#PBF and LTC1286IS8#TRPBF variants?

A: Both parts are electrically identical. The primary difference is packaging format: LTC1286IS8#PBF is supplied in Tube packaging, while LTC1286IS8#TRPBF is supplied in Tape & Reel (TR) format. Selection depends on assembly process requirements and volume considerations.

Q: Why do LTC1286IS8#PBF and LTC1286IS8#TRPBF have a lower sampling rate than the ADS1286UG4?

A: The LTC1286 series operates at a maximum sampling rate of 12.5 kHz, compared to the 20 kHz sampling rate of the ADS1286UG4. This represents a functional difference that must be evaluated against application requirements. If the target application requires 20 kHz sampling, the LTC1286 variants are not suitable. If the application can operate at 12.5 kHz or lower, these parts provide an alternative with active product status and expanded supply voltage tolerance.

Q: Are the supply voltage ranges compatible between ADS1286UG4 and LTC1286IS8 variants?

A: The ADS1286UG4 requires fixed 5V analog and digital supply voltages. The LTC1286IS8#PBF and LTC1286IS8#TRPBF accept a wider range of 4.5V to 9V for both supplies. If the target application provides exactly 5V supplies, both part families are compatible. If the application requires operation across the 4.5V to 9V range, the LTC1286 variants provide additional flexibility.

Q: Is ISL2671286IBZ a viable long-term substitute despite obsolete status?

A: ISL2671286IBZ provides full parametric equivalence to the ADS1286UG4 and carries ROHS3 compliance. However, its obsolete product status indicates that Renesas Electronics Corporation has discontinued active production and support. While current inventory is available, this part is not recommended for new designs or applications requiring long-term supply chain continuity. It may be considered only for maintenance or repair of existing systems where no other alternatives are available.

Q: Do all substitute parts maintain the same 8-SOIC package footprint?

A: Yes. All substitute parts listed—ADS1286UA, ADS1286UC, ADS1286UB, ISL2671286IBZ, LTC1286IS8#PBF, and LTC1286IS8#TRPBF—are packaged in 8-SOIC (0.154", 3.90mm Width) surface mount format. PCB layout and footprint compatibility is maintained across all substitutes.