LT1028CS8#TRPBF Equivalent & Substitute Parts

Part Overview

The LT1028CS8#TRPBF is a general purpose operational amplifier manufactured by Analog Devices Inc., housed in an 8-SOIC surface mount package. This single-circuit amplifier is designed for applications requiring moderate bandwidth and low input offset voltage. The device is currently in active production status with substantial inventory availability (88,988 pieces in stock).

Substitute parts become necessary when the primary device experiences supply constraints, end-of-life transitions, or when application requirements demand alternative performance characteristics such as extended temperature ranges, lower power consumption, or specialized amplifier topologies.

Substiute Parts

LT1028CS8#TRPBF

Analog Devices Inc.In Stock: 89067LT1028CS8#TRPBF Datasheet

Current PartRFQ

INA141U

Texas InstrumentsIn Stock: 20213INA141U Datasheet

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TLE2037CD

Texas InstrumentsIn Stock: 1203TLE2037CD Datasheet

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TLE2037MD

Texas InstrumentsIn Stock: 1403TLE2037MD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LT1028CS8#TRPBF is determined by the following critical parameters:

Mechanical Compatibility:

• Package type: 8-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Pin count and footprint equivalence

Electrical Compatibility:

• Amplifier topology: General Purpose operational amplifier
• Single circuit configuration
• Input offset voltage: 20 µV (maximum)
• Supply voltage range: 8 V to 36 V minimum overlap
• Operating temperature range: 0°C to 70°C minimum coverage

Regulatory Compliance:

• RoHS3 compliance required
• REACH unaffected status

The substitute parts TLE2037MD and TLE2037CD meet all mechanical and electrical compatibility criteria as general purpose amplifiers in identical 8-SOIC packages with overlapping supply voltage ranges and matching input offset specifications. The INA141U, while housed in the same 8-SOIC package, represents a different amplifier topology (instrumentation amplifier) and is listed as a cross-reference option for applications where instrumentation-grade performance characteristics are acceptable.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (General Purpose Amplifier Category):

TLE2037CD is the recommended direct substitute for the LT1028CS8#TRPBF. Both devices are active production general purpose amplifiers with identical 8-SOIC packaging, matching input offset voltage specifications (20 µV), and overlapping supply voltage ranges (8 V to 38 V). The TLE2037CD maintains the 0°C to 70°C operating temperature range of the primary part and carries ROHS3 compliance with MSL-1 rating. Current inventory of 1,175 pieces supports immediate availability.

TLE2037MD provides an alternative with extended operating temperature range (-55°C to 125°C), suitable for applications requiring military or industrial temperature specifications. However, this device carries a Last Time Buy product status, indicating limited future availability. The electrical performance characteristics remain equivalent to the primary part within the 0°C to 70°C overlap range.

Secondary Substitute (Instrumentation Amplifier Category):

INA141U represents a topology change from general purpose to instrumentation amplifier architecture. While housed in the identical 8-SOIC package with matching input offset voltage (20 µV) and compatible supply voltage range (4.5 V to 36 V), this device exhibits significantly different performance characteristics: lower slew rate (4 V/µs versus 15 V/µs), reduced supply current (0.75 mA versus 7.6 mA), and lower input bias current (2 nA versus 30 nA). Selection of INA141U requires confirmation that instrumentation amplifier topology meets application requirements.

Compliance Status:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence with the primary device.

Frequently Asked Questions (FAQ)

Q: Can TLE2037MD be used as a direct replacement for LT1028CS8#TRPBF in all applications?

A: TLE2037MD is mechanically and electrically compatible within the 0°C to 70°C operating temperature range. The extended temperature capability (-55°C to 125°C) of TLE2037MD does not restrict its use in standard temperature applications. However, TLE2037MD carries Last Time Buy status, indicating limited future procurement availability. For new designs requiring long-term supply assurance, TLE2037CD is the preferred substitute.

Q: What is the key difference between TLE2037CD and INA141U?

A: TLE2037CD is a general purpose operational amplifier with 75 MHz gain bandwidth product (50 MHz for TLE2037CD), matching the primary LT1028CS8#TRPBF topology. INA141U is an instrumentation amplifier with specialized input stage design, lower bandwidth (1 MHz), and significantly reduced supply current (0.75 mA). Instrumentation amplifiers provide higher input impedance and superior common-mode rejection, but are not direct functional equivalents to general purpose amplifiers. Selection of INA141U requires application-level verification.

Q: Are all substitute parts available in the same packaging format?

A: Yes. The LT1028CS8#TRPBF, TLE2037MD, TLE2037CD, and INA141U are all housed in 8-SOIC (0.154", 3.90mm Width) surface mount packages with identical pin configurations and footprints. No PCB layout modifications are required for mechanical substitution.

Q: What is the significance of the MSL (Moisture Sensitivity Level) rating difference between LT1028CS8#TRPBF and INA141U?

A: LT1028CS8#TRPBF carries MSL-1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling. INA141U carries MSL-3 (168 Hours) rating, requiring controlled humidity storage and limiting shelf life to 168 hours after moisture exposure. For applications with extended storage periods or high-humidity environments, MSL-1 rated devices are preferred.

Q: Can supply voltage range differences affect substitution decisions?

A: The LT1028CS8#TRPBF operates from 8 V to 36 V. TLE2037MD and TLE2037CD extend the maximum supply voltage to 38 V, providing additional headroom. INA141U operates from 4.5 V to 36 V, enabling operation at lower supply voltages. Substitution is valid only when the application supply voltage falls within the overlap range (8 V to 36 V for general purpose substitutes, 8 V to 36 V for instrumentation substitute). Applications requiring operation below 8 V or above 36 V require device-specific evaluation.

Q: How do slew rate differences impact circuit performance?

A: LT1028CS8#TRPBF provides 15 V/µs slew rate. TLE2037MD and TLE2037CD provide 7.5 V/µs (50% reduction), while INA141U provides 4 V/µs (73% reduction). Slew rate determines the maximum rate of output voltage change. Applications with high-frequency signal requirements or fast transient response demands may be affected by reduced slew rate. Verification of circuit performance under actual operating conditions is necessary when substituting devices with lower slew rate specifications.