INA116PA Equivalent & Substitute Parts

Part Overview

The INA116PA is a general-purpose instrumentation amplifier manufactured by Texas Instruments, housed in a 16-DIP through-hole package. This device is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product roadmap. The INA116PA operates across a wide supply voltage range of 9V to 36V and is suitable for legacy systems and applications requiring through-hole mounting technology. Identifying equivalent substitute parts is necessary for design continuity, component availability, and long-term system support when the INA116PA reaches end-of-life status.

Substiute Parts

INA116PA

Texas InstrumentsIn Stock: 1740INA116PA Datasheet

Current PartRFQ

INA826AID

Texas InstrumentsIn Stock: 10470INA826AID Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the INA116PA is determined by the following critical parameters:

Functional Compatibility:

• Single-circuit amplifier configuration (Number of Circuits = 1)
• Supply voltage range overlap: INA116PA operates 9V–36V; substitute must support minimum 9V operation
• Output current capability: INA116PA provides 12 mA per channel; substitute must meet or exceed this specification

Electrical Performance:

• Slew rate, bandwidth, input bias current, and input offset voltage define signal fidelity and noise characteristics
• Substitutes with superior electrical performance (higher slew rate, lower input bias current, lower offset voltage) are acceptable for direct replacement

Compliance & Regulatory:

• RoHS3 compliance is mandatory for equivalent parts
• REACH Unaffected status ensures regulatory alignment

Packaging & Mounting:

• Through-hole mounting (DIP package) is the primary constraint for direct board-level substitution
• Surface-mount alternatives (SOIC, etc.) require circuit board redesign and are classified as functional equivalents rather than direct substitutes

The INA826AID is identified as a manufacturer-recommended substitute based on functional equivalence and superior electrical performance, though it requires packaging accommodation due to its 8-SOIC surface-mount configuration.

Parameter Comparison

Engineering Selection Recommendations

Direct Through-Hole Substitution: No direct pin-compatible through-hole substitute is provided in the available data. The INA116PA 16-DIP package is specific to through-hole mounting applications and requires a matching DIP footprint for direct board-level replacement without redesign.

Functional Equivalent with Board Redesign: The INA826AID is designated as a manufacturer-recommended functional equivalent. This substitution is valid under the following conditions:

1. Product Status Alignment: The INA826AID holds Active status, ensuring long-term availability and continued manufacturer support, contrasting with the INA116PA's "Not For New Designs" classification.

2. Compliance Certification: Both devices maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for equivalent component selection.

3. Electrical Performance: The INA826AID demonstrates superior performance across key metrics: 25% higher slew rate (1 V/µs vs. 0.8 V/µs), 25% greater bandwidth (1 MHz vs. 800 kHz), and significantly lower input offset voltage (40 µV vs. 500 µV). These improvements enhance signal integrity and reduce noise in instrumentation applications.

4. Supply Voltage Compatibility: The INA826AID operates across 2.7V to 36V, encompassing the INA116PA's 9V to 36V range. Applications requiring 9V minimum supply voltage remain fully compatible.

5. Output Current Capability: The INA826AID provides 16 mA per channel, exceeding the INA116PA's 12 mA specification, ensuring adequate drive capability for downstream circuitry.

6. Temperature Range Extension: The INA826AID supports -40°C to 125°C operation, extending the upper temperature limit by 40°C compared to the INA116PA's -40°C to 85°C range.

Implementation Consideration: Substitution of the INA116PA with the INA826AID requires circuit board redesign to accommodate the 8-SOIC surface-mount package in place of the 16-DIP through-hole configuration. This substitution is appropriate for new board revisions, production transitions, or system upgrades where board-level modifications are feasible.

Frequently Asked Questions (FAQ)

Q1: Can the INA826AID replace the INA116PA without circuit board modifications?

A: No. The INA116PA uses a 16-DIP through-hole package, while the INA826AID uses an 8-SOIC surface-mount package. Direct socket substitution is not possible. Board redesign or the use of an adapter module is required for physical integration.

Q2: What are the key electrical differences between these two devices?

A: The INA826AID offers superior electrical performance: 25% higher slew rate, 25% greater bandwidth, 99.2% lower input offset voltage (40 µV vs. 500 µV), and 200× lower supply current (200 µA vs. 1 mA). These improvements reduce noise and power consumption in instrumentation applications.

Q3: Is the INA826AID compatible with the INA116PA's 9V to 36V supply voltage range?

A: Yes. The INA826AID operates across 2.7V to 36V, which fully encompasses the INA116PA's 9V to 36V operating range. Applications using 9V minimum supply voltage will function correctly with the INA826AID.

Q4: Why is the INA116PA marked "Not For New Designs"?

A: This designation indicates the INA116PA has been superseded in Texas Instruments' product portfolio. The manufacturer recommends using active alternatives like the INA826AID for new designs to ensure long-term availability, continued support, and access to improved performance characteristics.

Q5: Does the INA826AID meet the same regulatory compliance standards as the INA116PA?

A: Yes. Both devices are ROHS3 compliant and REACH Unaffected, satisfying equivalent regulatory requirements for component selection in compliant applications.

Q6: What is the primary advantage of the INA826AID's rail-to-rail output specification?

A: Rail-to-rail output capability allows the INA826AID to swing its output voltage closer to the positive and negative supply rails, maximizing the usable output signal range. This is particularly beneficial in low-supply-voltage applications and systems requiring maximum dynamic range.

Q7: Can the INA116PA and INA826AID be used interchangeably in existing systems?

A: Functional interchangeability is limited to applications where board-level modifications are acceptable. The INA826AID's superior electrical performance makes it suitable for direct functional replacement in new designs or system upgrades. Existing through-hole designs would require board redesign or adapter solutions.

Q8: What is the moisture sensitivity level (MSL) difference between these devices?

A: The INA116PA lists MSL as Not Applicable, while the INA826AID specifies MSL 2 (1 Year). This indicates the INA826AID requires controlled storage conditions to prevent moisture absorption, with a one-year shelf life under specified humidity levels. Proper handling and storage protocols must be observed during component procurement and assembly.