TLE2037AMDG4 Equivalent & Substitute Parts Reference

Part Overview

The TLE2037AMDG4 is a general purpose operational amplifier manufactured by Texas Instruments in the Excalibur™ series. This device is classified as a Last Time Buy product, indicating limited future availability. The IC integrates one amplifier circuit in an 8-SOIC surface mount package and is designed for applications requiring low input offset voltage and moderate bandwidth performance. Due to its Last Time Buy status, identifying equivalent substitute parts is essential for design continuity and long-term supply chain planning.

Substiute Parts

TLE2037AMDG4

Texas InstrumentsIn Stock: 821TLE2037AMDG4 Datasheet

Current PartRFQ

TLE2037AMD

Texas InstrumentsIn Stock: 1233TLE2037AMD Datasheet

MFR RecommendedRFQ

AD8421BRZ

Analog Devices Inc.In Stock: 4542AD8421BRZ Datasheet

MFR RecommendedRFQ

LT1028CS8#PBF

Analog Devices Inc.In Stock: 5990LT1028CS8#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLE2037AMDG4 are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Electrical Compatibility Criteria:

• Amplifier Type: General Purpose
• Number of Circuits: 1
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Supply Voltage Range: Minimum 8V, Maximum 38V
• Operating Temperature Range: Must encompass or match -55°C to 125°C
• RoHS3 Compliance: Required

Performance Parameters Considered:

• Slew Rate: 7.5 V/µs (baseline)
• Gain Bandwidth Product: 50 MHz (baseline)
• Input Bias Current: 15 nA (baseline)
• Input Offset Voltage: 10 µV (baseline)

Substitutes are grouped into two categories:

Category 1 - Direct Manufacturer Equivalent (TLE2037AMD): Identical electrical specifications and same manufacturer series. Fully interchangeable at the circuit level.

Category 2 - Cross-Manufacturer Alternatives (LT1028CS8#PBF, AD8421BRZ): Different manufacturers with comparable or enhanced performance characteristics. These parts meet the core functional requirements but may have different amplifier classifications or operating temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

TLE2037AMD (Primary Substitute): This part is the manufacturer-recommended equivalent from Texas Instruments. It provides identical electrical specifications and performance characteristics to the TLE2037AMDG4. Selection of TLE2037AMD is appropriate for direct replacement in existing designs without circuit modification. Both parts share Last Time Buy status, indicating this is a transitional solution rather than a long-term supply strategy.

LT1028CS8#PBF (Secondary Substitute): This Analog Devices general purpose amplifier offers enhanced slew rate (15 V/µs vs. 7.5 V/µs) and higher gain bandwidth product (75 MHz vs. 50 MHz). The part is in Active product status, ensuring long-term availability. However, the operating temperature range is restricted to 0°C to 70°C, which does not cover the full -55°C to 125°C range of the original part. This substitute is suitable for applications operating within the 0°C to 70°C window where extended temperature performance is not required.

AD8421BRZ (Tertiary Substitute): This Analog Devices instrumentation amplifier differs in amplifier classification from the general purpose TLE2037AMDG4. The AD8421BRZ features significantly lower input bias current (0.1 pA vs. 15 nA) and higher output current capability (65 mA vs. 50 mA). The -3dB bandwidth is lower at 10 MHz compared to the 50 MHz gain bandwidth product of the original part. This part is in Active status and operates across -40°C to 85°C. Selection of AD8421BRZ is appropriate only when instrumentation amplifier characteristics and lower input bias current are circuit requirements.

Compliance and Certification: All substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can TLE2037AMD be used as a direct drop-in replacement for TLE2037AMDG4?

A: Yes. TLE2037AMD is the manufacturer-recommended equivalent with identical electrical specifications, performance parameters, and 8-SOIC package. No circuit modifications are required for direct substitution.

Q: What is the primary difference between TLE2037AMDG4 and LT1028CS8#PBF?

A: The LT1028CS8#PBF offers higher slew rate (15 V/µs vs. 7.5 V/µs) and greater gain bandwidth product (75 MHz vs. 50 MHz). However, its operating temperature range is limited to 0°C to 70°C, which does not cover the extended low-temperature performance (-55°C) of the TLE2037AMDG4.

Q: Why is AD8421BRZ listed as a substitute if it is an instrumentation amplifier?

A: AD8421BRZ is included because it shares the same 8-SOIC package, supply voltage compatibility, and RoHS3 compliance. However, its instrumentation amplifier topology and different performance characteristics (lower bandwidth, significantly lower input bias current) make it suitable only for applications where these specific traits are advantageous.

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

A: Yes. All listed substitutes are available in 8-SOIC (0.154", 3.90mm Width) surface mount packages, ensuring mechanical compatibility with existing PCB layouts.

Q: What should I consider when selecting between these substitutes?

A: Selection depends on three factors: (1) Operating temperature requirements—if -55°C operation is needed, only TLE2037AMD qualifies; (2) Performance requirements—if higher slew rate or bandwidth is needed, LT1028CS8#PBF is suitable within its temperature range; (3) Long-term supply strategy—LT1028CS8#PBF and AD8421BRZ are in Active status, providing better long-term availability compared to the Last Time Buy status of both TLE2037 variants.

Q: Do all substitutes maintain RoHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the TLE2037AMDG4.

Q: Can I use AD8421BRZ in a circuit designed for general purpose amplification?

A: AD8421BRZ can function in general purpose applications, but its instrumentation amplifier design introduces different input impedance characteristics and gain structure. Circuit validation is necessary to confirm performance equivalence in the specific application context.