INA105KP Equivalent & Substitute Parts

Part Overview

The INA105KP is an active differential amplifier integrated circuit manufactured by Texas Instruments, designed for precision signal conditioning and measurement applications. This 8-PDIP packaged device operates as a single-circuit differential amplifier with a supply voltage range of 10V to 36V and an operating temperature range of -40°C to 85°C. The device maintains an active product status with 3900 units currently in stock. Substitute parts are identified when equivalent functional performance can be achieved within the same package type and mounting configuration, while maintaining compliance with RoHS3 and REACH standards.

Substiute Parts

INA105KP

Texas InstrumentsIn Stock: 3916INA105KP Datasheet

Current PartRFQ

AMP03GPZ

Analog Devices Inc.In Stock: 1399AMP03GPZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the INA105KP is determined by strict adherence to the following criteria:

Package and Mounting Compatibility: The substitute part must utilize an 8-DIP (0.300", 7.62mm) through-hole package to ensure direct board-level compatibility without layout modifications.

Functional Classification: The substitute must be classified as a differential amplifier with a single circuit configuration, maintaining the same signal conditioning architecture.

Supply Voltage Range: The substitute must operate within the specified supply voltage envelope. The INA105KP operates from 10V to 36V; substitute parts must support this range or a range that fully encompasses it.

Operating Temperature Range: The substitute must maintain performance across the -40°C to 85°C operating temperature range.

Regulatory Compliance: The substitute must maintain RoHS3 compliance and REACH unaffected status to ensure regulatory equivalence.

Electrical Performance Parameters: While substitute parts may exhibit different electrical characteristics (slew rate, bandwidth, input offset voltage, supply current, and output current), these differences do not disqualify substitution when the part meets the above structural and compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

INA105KP Selection Criteria: The INA105KP remains the primary choice when the specified electrical characteristics are required within the application design. This device is actively manufactured and maintains full RoHS3 compliance and REACH unaffected status. Current inventory of 3900 units supports immediate procurement requirements.

AMP03GPZ Selection Criteria: The AMP03GPZ (Analog Devices Inc.) qualifies as a substitute part when the application can accommodate enhanced electrical performance characteristics. This device exhibits superior slew rate (9.5V/µs versus 3V/µs), increased bandwidth (3MHz versus 1MHz), lower input offset voltage (25µV versus 50µV), and higher output current capability (45mA versus 20mA). The AMP03GPZ maintains identical package configuration, operating temperature range, and regulatory compliance status. The minimum supply voltage requirement increases from 10V to 12V; applications operating below 12V supply voltage cannot utilize this substitute.

Both devices maintain active product status and full regulatory compliance, ensuring long-term availability and design reliability.

Frequently Asked Questions (FAQ)

Q: Can the AMP03GPZ directly replace the INA105KP on existing PCBs?

A: Yes, direct pin-for-pin replacement is possible. Both devices utilize the 8-DIP (0.300", 7.62mm) through-hole package with identical pinout configuration. No PCB layout modifications are required.

Q: What is the primary electrical difference between these devices?

A: The AMP03GPZ provides enhanced performance across multiple parameters: 3.17× higher slew rate, 3× greater bandwidth, 50% lower input offset voltage, and 2.25× higher output current capability. These improvements may benefit applications requiring faster signal conditioning or higher output drive capability.

Q: Are there supply voltage compatibility concerns?

A: The AMP03GPZ requires a minimum supply voltage of 12V, compared to 10V for the INA105KP. Applications operating at 10V or 11V supply voltage must continue using the INA105KP. Both devices support the maximum 36V supply voltage.

Q: Do both devices meet the same regulatory requirements?

A: Yes. Both the INA105KP and AMP03GPZ are RoHS3 compliant and REACH unaffected, ensuring equivalent regulatory status for design certification and compliance documentation.

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

A: Both devices operate across the identical temperature range of -40°C to 85°C, ensuring equivalent thermal performance characteristics across industrial and commercial applications.

Q: Which device should be selected for new designs?

A: Device selection depends on application-specific requirements. For applications requiring operation at supply voltages below 12V, the INA105KP is mandatory. For applications where enhanced slew rate, bandwidth, or output current capability provides system benefits, the AMP03GPZ offers superior performance within the same package footprint.