TSB712IST Equivalent & Substitute Parts

Part Overview

The TSB712IST is a general-purpose operational amplifier manufactured by STMicroelectronics, featuring dual circuits in a rail-to-rail configuration. This device is classified as an active linear amplifier component designed for general-purpose signal conditioning and amplification applications. The TSB712IST maintains active product status with automotive-grade qualification under AEC-Q100 standards, supporting a wide supply voltage range from 2.7 V to 36 V and operating temperatures from -40°C to 125°C.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit operation within alternative electrical specifications while maintaining functional compatibility and package-level interchangeability.

Substiute Parts

TSB712IST

STMicroelectronicsIn Stock: 1031TSB712IST Datasheet

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TLV2172IDGKT

Texas InstrumentsIn Stock: 4688TLV2172IDGKT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSB712IST is determined by the following critical parameters:

Functional Compatibility Requirements:

• Dual-circuit general-purpose operational amplifier configuration
• Rail-to-rail output capability
• Surface-mount package with 8-pin TSSOP/MSOP footprint (0.118", 3.00mm width)
• Operating temperature range of -40°C to 125°C

Electrical Operating Window:

• Supply voltage compatibility within the specified range
• Output current capability per channel
• Input bias current and offset voltage characteristics
• Slew rate and gain bandwidth product performance

Compliance & Certification:

• Active product status
• RoHS3 compliance
• REACH unaffected status
• ECCN and HTSUS classification alignment

The TLV2172IDGKT from Texas Instruments qualifies as a substitute based on matching functional architecture (dual general-purpose amplifier, rail-to-rail output, 8-pin surface-mount package), compatible operating temperature range, and regulatory compliance. Electrical performance parameters exceed the TSB712IST baseline, indicating enhanced capability within the same functional category.

Parameter Comparison

Engineering Selection Recommendations

TSB712IST Selection Criteria: The TSB712IST is the primary component choice for applications requiring automotive-grade qualification under AEC-Q100 standards. This device supports the lowest minimum supply voltage (2.7 V) within the dual-amplifier general-purpose category, enabling operation in battery-powered and low-voltage systems. The automotive grade designation and unlimited moisture sensitivity level (MSL 1) provide assurance for demanding environmental conditions. Active product status with established supply chain availability supports long-term production continuity.

TLV2172IDGKT Substitution Criteria: The TLV2172IDGKT serves as a functional substitute when supply availability of the TSB712IST is constrained or when design specifications permit operation at higher minimum supply voltages (4.5 V minimum). This device delivers enhanced electrical performance across multiple parameters: superior slew rate (10 V/µs versus 3 V/µs), higher gain bandwidth product (10 MHz versus 6 MHz), significantly lower input bias current (10 pA versus 300 nA), and reduced input offset voltage (500 µV versus 1.2 mV). The TLV2172IDGKT maintains identical package footprint compatibility, matching operating temperature range, and equivalent regulatory compliance (ROHS3, REACH unaffected, EAR99). The higher moisture sensitivity level (MSL 2, 1 Year) requires standard handling procedures within typical manufacturing environments.

Substitution Feasibility: Direct substitution of TLV2172IDGKT for TSB712IST is permissible in applications where the minimum supply voltage requirement of 4.5 V does not conflict with system design specifications. The enhanced electrical performance of the TLV2172IDGKT presents no compatibility risk in circuits designed for the TSB712IST baseline specifications. Pin-compatible 8-pin TSSOP/MSOP package configuration ensures mechanical interchangeability without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can the TLV2172IDGKT directly replace the TSB712IST in existing designs?

A: Direct replacement is feasible provided the system supply voltage remains at or above 4.5 V. The TSB712IST operates at minimum 2.7 V supply, while the TLV2172IDGKT requires minimum 4.5 V. If the design operates below 4.5 V, the TLV2172IDGKT cannot be substituted. Both devices share identical 8-pin TSSOP/MSOP package footprints and pin configurations, eliminating PCB layout modifications.

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

A: The TLV2172IDGKT provides superior performance across multiple parameters: slew rate increases from 3 V/µs to 10 V/µs, gain bandwidth product increases from 6 MHz to 10 MHz, input bias current decreases from 300 nA to 10 pA, and input offset voltage decreases from 1.2 mV to 500 µV. Supply current is comparable (1.8 mA versus 1.6 mA per channel), and output current capability increases from 50 mA to 75 mA per channel. Maximum supply voltage remains 36 V for both devices.

Q: Are there compliance or certification differences?

A: Both devices maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification. The TSB712IST carries automotive-grade qualification (AEC-Q100), while the TLV2172IDGKT does not specify automotive qualification. The TSB712IST features unlimited moisture sensitivity (MSL 1), whereas the TLV2172IDGKT specifies MSL 2 (1 Year), requiring standard moisture control during storage and handling.

Q: What package options are available for both devices?

A: Both the TSB712IST and TLV2172IDGKT are supplied in 8-pin TSSOP/MSOP surface-mount packages with 0.118" (3.00mm) width. The TSB712IST is designated as 8-MiniSO, while the TLV2172IDGKT is designated as 8-VSSOP. These package designations refer to the same physical footprint and pin configuration, ensuring mechanical interchangeability on PCB assemblies.

Q: Which device should be selected for automotive applications?

A: The TSB712IST is the specified choice for automotive applications due to AEC-Q100 qualification. The TLV2172IDGKT does not carry automotive-grade certification and should not be selected for applications requiring automotive qualification compliance unless design specifications explicitly permit non-automotive component substitution.

Q: How do input bias current specifications affect circuit design?

A: The TSB712IST exhibits 300 nA input bias current, while the TLV2172IDGKT exhibits 10 pA input bias current. In high-impedance input circuits, the significantly lower bias current of the TLV2172IDGKT reduces input offset errors and improves accuracy. For standard impedance applications, both devices perform adequately. Input offset voltage is also lower in the TLV2172IDGKT (500 µV versus 1.2 mV), providing improved precision in precision amplifier configurations.

Q: Are there supply voltage constraints for system design?

A: The TSB712IST operates across 2.7 V to 36 V supply range, supporting low-voltage battery-powered applications. The TLV2172IDGKT requires minimum 4.5 V supply, restricting use in systems operating below this threshold. Both devices support the full 36 V maximum supply voltage. System designers must verify that the selected device's minimum supply voltage requirement aligns with the intended power supply architecture.