INA155E/2K5 Equivalent & Substitute Parts

Part Overview

The INA155E/2K5 is an instrumentation amplifier manufactured by Texas Instruments, designed for precision signal conditioning applications requiring rail-to-rail output capability. This integrated circuit contains one amplification circuit in an 8-VSSOP surface mount package and operates across a supply voltage range of 2.7 V to 5.5 V with an operating temperature range of -55°C to 125°C.

The INA155E/2K5 is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for applications currently utilizing this component.

Substiute Parts

INA155E/2K5

Texas InstrumentsIn Stock: 919INA155E/2K5 Datasheet

Current PartRFQ

INA155E/250

Texas InstrumentsIn Stock: 2043INA155E/250 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the INA155E/2K5 is determined by strict equivalence across the following critical parameters:

Electrical Performance Criteria:

• Amplifier type (Instrumentation)
• Number of circuits (1)
• Output type (Rail-to-Rail)
• Slew rate (6.5 V/µs)
• -3dB bandwidth (550 kHz)
• Input bias current (1 pA)
• Input offset voltage (200 µV)
• Supply current (1.7 mA)
• Output current per channel (50 mA)
• Supply voltage range (2.7 V to 5.5 V)
• Operating temperature range (-55°C to 125°C)

Physical and Compliance Criteria:

• Package type (8-VSSOP)
• Mounting type (Surface Mount)
• RoHS3 compliance
• Moisture sensitivity level (MSL 2)

The INA155E/250 is identified as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The INA155E/250 is the direct substitute for the obsolete INA155E/2K5. Both parts are manufactured by Texas Instruments and share identical electrical and mechanical specifications across all critical parameters.

Product Status Consideration: The INA155E/2K5 is classified as obsolete, while the INA155E/250 maintains active product status. This distinction ensures continued availability, manufacturing support, and compliance with current regulatory requirements.

Compliance and Certification: Both parts maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity levels. No compliance degradation occurs with this substitution.

Packaging Distinction: The primary difference between these parts is packaging format. The INA155E/2K5 is supplied in standard packaging, while the INA155E/250 is supplied in Tape & Reel (TR) format. This distinction affects supply chain logistics and automated assembly processes but does not impact electrical performance or functional compatibility.

Supply Chain Availability: The INA155E/250 maintains higher inventory levels (2000 Pcs) compared to the INA155E/2K5 (878 Pcs), supporting sustained production requirements and reducing procurement lead times.

Frequently Asked Questions (FAQ)

Q: Can the INA155E/250 be used as a direct replacement for the INA155E/2K5 in existing designs?

A: Yes. The INA155E/250 is electrically and mechanically equivalent to the INA155E/2K5. All electrical parameters, operating ranges, and package specifications are identical. No circuit modifications or design changes are required.

Q: What is the difference between the INA155E/2K5 and INA155E/250?

A: The primary difference is packaging format and product status. The INA155E/2K5 is supplied in standard packaging and is classified as obsolete. The INA155E/250 is supplied in Tape & Reel (TR) format and maintains active product status. Electrical and mechanical specifications are identical.

Q: Does the Tape & Reel packaging of the INA155E/250 affect circuit performance?

A: No. Tape & Reel packaging is a supply format used for automated assembly processes. It does not affect the electrical performance, reliability, or functional characteristics of the component itself.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts maintain identical RoHS3 compliance, REACH unaffected status, moisture sensitivity levels, and export classifications (ECCN EAR99, HTSUS 8542.33.0001).

Q: What is the operating temperature range for both parts?

A: Both the INA155E/2K5 and INA155E/250 operate across the temperature range of -55°C to 125°C.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Both parts use identical 8-VSSOP surface mount packages with the same pinout, footprint, and mechanical dimensions (0.118", 3.00mm width). They are fully interchangeable in PCB assembly processes.

Q: What supply voltage range do these instrumentation amplifiers support?

A: Both parts operate with a supply voltage range of 2.7 V to 5.5 V, supporting single-supply and dual-supply configurations within this range.