LM4132AMF-2.0 Equivalent & Substitute Parts

Part Overview

The LM4132AMF-2.0 is a Series Voltage Reference IC manufactured by Texas Instruments, delivering a fixed 2.048V output with ±0.05% tolerance in a SOT-23-5 surface mount package. This component is classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing design support and procurement continuity. The part operates across a -40°C to 125°C temperature range with 20 mA output current capability and 100µA supply current, suitable for precision analog applications requiring stable voltage references.

Substiute Parts

LM4132AMF-2.0

Texas InstrumentsIn Stock: 2482LM4132AMF-2.0 Datasheet

Current PartRFQ

LM4132AMF-2.0/NOPB

Texas InstrumentsIn Stock: 3373LM4132AMF-2.0/NOPB Datasheet

Parametric EquivalentRFQ

LM4132AMFX-2.0/NOPB

Texas InstrumentsIn Stock: 840LM4132AMFX-2.0/NOPB Datasheet

Parametric EquivalentRFQ

MAX6037AAUK21+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3426MAX6037AAUK21+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM4132AMF-2.0 is determined by the following critical parameters:

• Fixed output voltage of 2.048V
• SOT-23-5 surface mount package compatibility
• Operating temperature range of -40°C to 125°C
• Series voltage reference topology
• Surface mount mounting type

The substitute parts are grouped into two categories:

Parametric Equivalents (Texas Instruments): LM4132AMF-2.0/NOPB and LM4132AMFX-2.0/NOPB maintain identical electrical specifications to the main part, including 2.048V fixed output, ±0.05% tolerance, 20 mA output current, and 20ppm/°C temperature coefficient. These parts differ only in product status (Active vs. Obsolete) and RoHS compliance level, making them direct functional replacements.

Manufacturer Recommended Substitute (Analog Devices Inc./Maxim Integrated): MAX6037AAUK21+T provides the same 2.048V fixed output voltage and SOT-23-5 package, but with relaxed tolerance (±0.2%), reduced output current (5 mA), and different noise characteristics. This part is suitable for applications where the tighter tolerance and higher output current of the LM4132AMF-2.0 are not required.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): Select LM4132AMF-2.0/NOPB or LM4132AMFX-2.0/NOPB. Both parts are active products with ROHS3 compliance, providing identical electrical performance to the obsolete LM4132AMF-2.0. These are the preferred choices for applications requiring the original ±0.05% tolerance and 20 mA output current capability. Tape & Reel packaging is standard for both active variants.

For Relaxed Tolerance Applications: Select MAX6037AAUK21+T when application requirements permit ±0.2% tolerance instead of ±0.05%. This Analog Devices part maintains the 2.048V output voltage and SOT-23-5 package compatibility. Note that output current is reduced to 5 mA and supply current increases to 275µA. This part is suitable for applications where precision tolerance is not critical and lower output current is acceptable.

All substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), supporting modern manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can LM4132AMF-2.0/NOPB be used as a direct replacement for LM4132AMF-2.0?

A: Yes. LM4132AMF-2.0/NOPB is a parametric equivalent with identical electrical specifications. The primary differences are product status (Active vs. Obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Both parts deliver 2.048V fixed output with ±0.05% tolerance, 20 mA output current, and 20ppm/°C temperature coefficient in the same SOT-23-5 package.

Q: What is the difference between LM4132AMF-2.0/NOPB and LM4132AMFX-2.0/NOPB?

A: Both parts are parametric equivalents with identical electrical specifications. The difference lies in packaging format: LM4132AMF-2.0/NOPB is supplied in standard Tape & Reel, while LM4132AMFX-2.0/NOPB is also supplied in Tape & Reel. Inventory levels differ, with LM4132AMF-2.0/NOPB having higher availability (3353 Pcs vs. 821 Pcs).

Q: Can MAX6037AAUK21+T replace LM4132AMF-2.0 in all applications?

A: MAX6037AAUK21+T maintains the 2.048V output voltage and SOT-23-5 package, but differs in tolerance (±0.2% vs. ±0.05%), output current (5 mA vs. 20 mA), and supply current (275µA vs. 100µA). Substitution is valid only for applications where these relaxed specifications are acceptable.

Q: Are all substitute parts available in the same SOT-23-5 package?

A: Yes. All substitute parts use the SC-74A, SOT-753 package designation with SOT-23-5 supplier device package, ensuring mechanical and electrical compatibility with the original LM4132AMF-2.0 footprint.

Q: What is the impact of the ±0.2% tolerance in MAX6037AAUK21+T compared to ±0.05% in LM4132AMF-2.0?

A: The LM4132AMF-2.0 provides tighter initial tolerance (±0.05%), resulting in more precise 2.048V output across production units. MAX6037AAUK21+T allows ±0.2% tolerance, which may be sufficient for applications with less stringent voltage reference accuracy requirements. Temperature coefficient differences (20ppm/°C vs. 25ppm/°C) also affect long-term stability across the operating range.

Q: What are the noise characteristics of each part?

A: LM4132AMF-2.0, LM4132AMF-2.0/NOPB, and LM4132AMFX-2.0/NOPB all specify 190µVp-p noise in the 0.1Hz to 10Hz band. MAX6037AAUK21+T provides significantly lower noise at 11µVp-p (0.1Hz to 10Hz) and 25µVrms (10Hz to 10kHz), making it preferable for noise-sensitive applications despite the relaxed tolerance specification.