INA280A4IDCKT Equivalent & Substitute Parts

Part Overview

The INA280A4IDCKT is a current sense amplifier manufactured by Texas Instruments, designed for precision current measurement applications. This integrated circuit operates as a single-channel current sense amplifier in a compact SC-70-5 surface mount package. The device is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. Identification of equivalent substitute parts is necessary to ensure design continuity and long-term component availability for production and maintenance applications.

Substiute Parts

INA280A4IDCKT

Texas InstrumentsIn Stock: 1210INA280A4IDCKT Datasheet

Current PartRFQ

INA280A4IDCKR

Texas InstrumentsIn Stock: 3085INA280A4IDCKR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the INA280A4IDCKT is determined by equivalence across the following critical parameters:

Electrical Specifications:

• Amplifier type classification (Current Sense)
• Single circuit configuration
• Slew rate (2 V/µs)
• Bandwidth performance (-3dB at 850 kHz)
• Input bias current (20 µA)
• Input offset voltage (15 µV)
• Supply current consumption (370 µA)
• Supply voltage range (2.7 V to 20 V)
• Operating temperature range (-40°C to 125°C)

Physical & Packaging Specifications:

• Surface mount mounting type
• SC-70-5 package designation (5-TSSOP, SOT-353)

Compliance & Environmental:

• Moisture sensitivity level (MSL 1)

Parts meeting all these parameters are classified as direct electrical and mechanical equivalents. The INA280A4IDCKR satisfies all specified criteria and is identified as the manufacturer-recommended substitute.

Parameter Comparison

Engineering Selection Recommendations

The INA280A4IDCKR is the direct substitute for the INA280A4IDCKT based on complete electrical and mechanical parameter equivalence. Selection of the substitute part is supported by the following factors:

Product Status Consideration: The INA280A4IDCKT carries Last Time Buy status, indicating end-of-life production. The INA280A4IDCKR maintains Active product status with higher available inventory (3036 pieces versus 1130 pieces), ensuring continued supply chain access.

Compliance Enhancement: The INA280A4IDCKR is ROHS3 compliant, whereas the main part lists RoHS status as not applicable. This compliance upgrade provides additional regulatory alignment for applications subject to environmental standards.

Functional Equivalence: All electrical parameters, including slew rate, bandwidth, input characteristics, supply specifications, and operating temperature range, are identical between the two parts. Physical packaging, mounting type, and environmental specifications are also equivalent.

Base Product Alignment: Both parts share the INA280 base product number, confirming they are variants within the same product family with identical functional performance.

Frequently Asked Questions (FAQ)

Q: Can the INA280A4IDCKR be used as a direct replacement for the INA280A4IDCKT in existing designs?

A: Yes. The INA280A4IDCKR is a direct electrical and mechanical equivalent. All specified electrical parameters, package type, pin configuration, and operating characteristics are identical. No design modifications are required.

Q: What is the difference between the INA280A4IDCKT and INA280A4IDCKR?

A: The primary differences are product status and compliance certification. The INA280A4IDCKT is Last Time Buy with limited inventory. The INA280A4IDCKR is Active production with higher inventory availability and ROHS3 compliance certification.

Q: Are the packages physically identical?

A: Yes. Both parts use the SC-70-5 package (5-TSSOP, SOT-353) with identical pin assignments, dimensions, and surface mount footprint specifications.

Q: What is the supply voltage range for these devices?

A: Both parts operate across a supply voltage range of 2.7 V to 20 V, supporting applications from low-voltage battery-powered systems to higher-voltage industrial circuits.

Q: What is the operating temperature range?

A: Both parts operate across -40°C to 125°C, suitable for industrial and extended-temperature applications.

Q: How do the input offset voltage specifications compare?

A: Both parts specify 15 µV input offset voltage, ensuring equivalent precision in current sensing applications.

Q: What is the bandwidth performance of these amplifiers?

A: Both parts provide -3dB bandwidth of 850 kHz with a slew rate of 2 V/µs, delivering identical frequency response characteristics.

Q: Are there any moisture sensitivity concerns?

A: Both parts carry MSL 1 (Unlimited) moisture sensitivity level, indicating no moisture sensitivity restrictions for storage or handling.

Q: Which part should be selected for new designs?

A: The INA280A4IDCKR should be selected for new designs due to Active product status, higher inventory availability, and ROHS3 compliance certification.