TS951ID Equivalent & Substitute Parts

Part Overview

The TS951ID 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 wide supply voltage range. The TS951ID is classified as obsolete, making identification of functionally equivalent substitute components necessary for ongoing design support, production continuity, and system maintenance.

Substiute Parts

TS951ID

STMicroelectronicsIn Stock: 4920TS951ID Datasheet

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TLV4111IDR

Texas InstrumentsIn Stock: 1193TLV4111IDR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TS951ID is determined by strict alignment of the following critical parameters:

Mandatory Matching Criteria:

• Amplifier Type: General Purpose
• Number of Circuits: 1
• Output Type: Rail-to-Rail
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C to 125°C
• RoHS Compliance: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Parameter Variation: Substitute components may exhibit differences in slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current per channel, and supply voltage span limits, provided the substitute operates within the specified temperature range and maintains the same physical package footprint and electrical interface characteristics.

The TLV4111IDR from Texas Instruments satisfies all mandatory matching criteria and is therefore classified as a direct substitute for the TS951ID.

Parameter Comparison

Engineering Selection Recommendations

The TLV4111IDR is a direct functional substitute for the TS951ID based on matching package geometry, pin configuration, amplifier topology, and environmental operating specifications. Both devices are ROHS3 compliant and carry MSL Level 1 moisture sensitivity ratings, ensuring compatibility with standard surface-mount assembly processes.

The primary advantage of selecting the TLV4111IDR is its active product status with Texas Instruments, ensuring continued availability, technical support, and supply chain stability. The TS951ID, classified as obsolete, presents long-term sourcing risk and limited manufacturer support.

The TLV4111IDR exhibits superior performance characteristics in several parameters: reduced input bias current (0.3 pA versus 35 nA), lower input offset voltage (175 µV versus 6 mV), reduced supply current consumption (700 µA versus 950 µA), and significantly higher output current capability (320 mA versus 10 mA per channel). These improvements provide enhanced precision and drive capability for demanding applications.

Design consideration: The TLV4111IDR operates within a reduced maximum supply voltage range (2.5 V to 6 V) compared to the TS951ID (2.7 V to 12 V). System designs requiring supply voltages exceeding 6 V must retain the TS951ID or identify alternative substitutes with compatible voltage specifications.

Frequently Asked Questions (FAQ)

Q: Can the TLV4111IDR directly replace the TS951ID in existing PCB designs?

A: Yes, the TLV4111IDR is a direct pin-compatible replacement. Both devices use identical 8-SOIC package geometry with matching pin assignments. No PCB layout modifications are required for physical substitution.

Q: What are the key differences between these two devices?

A: The primary differences are product status (TS951ID is obsolete; TLV4111IDR is active), maximum supply voltage rating (TS951ID supports up to 12 V; TLV4111IDR supports up to 6 V), and performance characteristics including input bias current, input offset voltage, and output current capability. The TLV4111IDR offers superior performance in most parameters.

Q: Is the TLV4111IDR suitable for applications requiring supply voltages above 6 V?

A: No. The TLV4111IDR is rated for a maximum supply voltage of 6 V. Applications requiring higher supply voltages must use the TS951ID or identify alternative operational amplifiers with compatible voltage specifications.

Q: Are both devices compliant with environmental and regulatory standards?

A: Yes. Both the TS951ID and TLV4111IDR are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 moisture sensitivity ratings. Both are classified under ECCN EAR99 and HTSUS 8542.33.0001.

Q: What is the impact of the TS951ID's obsolete status?

A: Obsolete status indicates the manufacturer has discontinued production and support. This creates supply chain risk, potential price volatility, and limited access to technical documentation. The TLV4111IDR's active status ensures ongoing availability and manufacturer support.

Q: Can the TLV4111IDR handle the same output current as the TS951ID?

A: No. The TLV4111IDR provides 320 mA output current per channel, compared to 10 mA for the TS951ID. This represents a significant performance improvement, allowing the TLV4111IDR to drive higher-impedance loads and deliver greater output power.

Q: Are there any thermal or packaging considerations for substitution?

A: Both devices use identical 8-SOIC surface-mount packaging with matching thermal characteristics. No modifications to thermal management, heatsinking, or PCB layout are required for substitution.