TS1871ID Equivalent & Substitute Parts

Part Overview

The TS1871ID is a general-purpose operational amplifier manufactured by STMicroelectronics, housed in an 8-SOIC surface-mount package. This device features rail-to-rail output capability and is designed for linear amplification applications requiring low-power operation across a 1.8V to 6V supply range. The TS1871ID is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain compatibility with the 8-SOIC package format and satisfy the electrical performance parameters of the original specification.

Substiute Parts

TS1871ID

STMicroelectronicsIn Stock: 2776TS1871ID Datasheet

Current PartRFQ

MCP6271-E/SN

Microchip TechnologyIn Stock: 5447MCP6271-E/SN Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TS1871ID is determined by strict adherence to the following criteria:

Package Compatibility: The substitute part must be housed in an 8-SOIC surface-mount package with identical 0.154" (3.90mm) width to ensure direct PCB footprint compatibility.

Electrical Functional Equivalence: The substitute must operate as a general-purpose, single-circuit operational amplifier with rail-to-rail output capability.

Supply Voltage Range: The substitute must accept the full 1.8V to 6V supply voltage span specified for the TS1871ID.

Operating Temperature Range: The substitute must function across the -40°C to 125°C temperature range.

Regulatory Compliance: The substitute must maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating.

The MCP6271-E/SN from Microchip Technology satisfies all substitution criteria and is classified as an active product with current manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: The MCP6271-E/SN is the qualified substitute for the TS1871ID. Both devices maintain identical package geometry (8-SOIC), operating temperature range (-40°C to 125°C), and regulatory compliance (ROHS3, MSL 1). The MCP6271-E/SN is an active product with current manufacturing availability, addressing the obsolescence status of the TS1871ID.

Compliance Alignment: Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, ensuring equivalent handling and storage requirements.

Supply Voltage Consideration: The MCP6271-E/SN specifies a minimum supply voltage of 2V, compared to the TS1871ID minimum of 1.8V. Applications requiring operation below 2V supply voltage cannot use the MCP6271-E/SN as a direct substitute.

Performance Characteristics: The MCP6271-E/SN exhibits improved electrical performance in slew rate (0.9V/µs vs. 0.6V/µs), gain bandwidth product (2 MHz vs. 1.8 MHz), input bias current (1 pA vs. 70 nA), and supply current (170µA vs. 500µA). These enhancements provide superior dynamic response and reduced power consumption.

Frequently Asked Questions (FAQ)

Q: Can the MCP6271-E/SN replace the TS1871ID in all applications?

A: The MCP6271-E/SN is a direct substitute for applications operating at supply voltages of 2V or higher. Applications requiring operation below 2V supply voltage require alternative solutions, as the MCP6271-E/SN minimum supply specification is 2V.

Q: Are the package footprints identical between TS1871ID and MCP6271-E/SN?

A: Yes. Both devices are housed in 8-SOIC packages with 0.154" (3.90mm) width, ensuring identical PCB footprint compatibility without layout modifications.

Q: What is the significance of the obsolete status of the TS1871ID?

A: Obsolete status indicates that STMicroelectronics has discontinued manufacturing and support for the TS1871ID. The MCP6271-E/SN, classified as active, ensures continued availability and manufacturing support for new designs and production continuity.

Q: How do the electrical performance differences affect circuit design?

A: The MCP6271-E/SN provides higher slew rate and gain bandwidth product, enabling faster signal processing. Reduced input bias current and supply current consumption offer improved precision and lower power requirements. These enhancements are generally beneficial; however, circuit designs optimized for the TS1871ID specifications require validation when migrating to the MCP6271-E/SN.

Q: Are moisture sensitivity and RoHS compliance identical?

A: Yes. Both the TS1871ID and MCP6271-E/SN carry MSL 1 (Unlimited) ratings and ROHS3 compliance, ensuring equivalent handling, storage, and environmental requirements.

Q: What is the minimum supply voltage for each device?

A: The TS1871ID operates at a minimum of 1.8V, while the MCP6271-E/SN requires a minimum of 2V. This difference is critical for ultra-low-voltage applications.