LMV715MF/NOPB Equivalent & Substitute Parts

Part Overview

The LMV715MF/NOPB is a general purpose operational amplifier manufactured by Texas Instruments, housed in a SOT-23-6 surface mount package. This device features rail-to-rail output capability and is designed for low-power applications requiring single-circuit amplification. The product is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and component procurement.

Substiute Parts

LMV715MF/NOPB

Texas InstrumentsIn Stock: 801LMV715MF/NOPB Datasheet

Current PartRFQ

ISL28148FHZ-T7A

Renesas Electronics CorporationIn Stock: 1144ISL28148FHZ-T7A Datasheet

MFR RecommendedRFQ

MAX4238AUT+

Analog Devices Inc./Maxim IntegratedIn Stock: 29435MAX4238AUT+ Datasheet

MFR RecommendedRFQ

MAX4239AUT+T

Analog Devices Inc./Maxim IntegratedIn Stock: 7758MAX4239AUT+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LMV715MF/NOPB is determined by the following critical parameters:

Package Compatibility: All substitute parts must use SOT-23-6 surface mount packaging to ensure mechanical and electrical compatibility with existing PCB layouts.

Electrical Specifications: Substitute parts must maintain rail-to-rail output capability and operate within the supply voltage range of 2.7 V to 5.5 V. Single-circuit configuration is required.

Performance Characteristics: The gain bandwidth product, slew rate, and output current capability define the functional performance envelope. Substitute parts may vary within these parameters provided they support the intended application requirements.

Compliance & Status: All substitute parts must maintain ROHS3 compliance and REACH unaffected status to satisfy regulatory requirements.

The three substitute parts identified—ISL28148FHZ-T7A, MAX4238AUT+, and MAX4239AUT+T—meet these core substitution criteria while offering varying performance characteristics and product availability status.

Parameter Comparison

Engineering Selection Recommendations

For Active Product Status Requirement: MAX4238AUT+ and MAX4239AUT+T are both classified as active products, ensuring ongoing manufacturer support, availability, and continued production. These parts are preferred when long-term component sourcing and technical support are critical design considerations.

For Obsolete Product Compatibility: ISL28148FHZ-T7A is also obsolete, similar to the LMV715MF/NOPB. This part provides functional equivalence but does not resolve the obsolescence issue. Selection of this substitute should be limited to applications where existing inventory is available and long-term sourcing is not a concern.

For Supply Voltage Flexibility: ISL28148FHZ-T7A supports a minimum supply voltage of 2.4 V, providing 0.3 V lower threshold compared to the LMV715MF/NOPB. This characteristic is beneficial for ultra-low-power applications operating near the lower supply limit.

For Extended Temperature Range: All three substitute parts support operating temperatures up to 125°C, exceeding the LMV715MF/NOPB maximum of 85°C. This extended range accommodates industrial and automotive applications requiring higher temperature operation.

For Low-Power Operation: MAX4238AUT+ and MAX4239AUT+T both feature 600 µA supply current, representing a 49% reduction compared to the LMV715MF/NOPB at 1.17 mA. These parts are optimal for battery-powered and energy-constrained applications.

For High-Speed Applications: MAX4239AUT+T provides the highest gain bandwidth product at 6.5 MHz, exceeding the LMV715MF/NOPB by 1.5 MHz. This part is suitable for applications requiring faster signal processing and wider bandwidth.

For Precision Offset Requirements: MAX4238AUT+ and MAX4239AUT+T both feature 0.1 µV input offset voltage, substantially lower than the LMV715MF/NOPB at 400 µV. These parts are required for precision instrumentation and high-accuracy signal conditioning applications.

Frequently Asked Questions (FAQ)

Q: Can MAX4238AUT+ directly replace LMV715MF/NOPB in existing designs?

A: MAX4238AUT+ is mechanically and electrically compatible, sharing the SOT-23-6 package and 2.7 V to 5.5 V supply range. However, the slew rate is significantly lower at 350 mV/µs compared to 5 V/µs. Verify that the application does not require the higher slew rate performance of the original part before substitution.

Q: What is the primary advantage of MAX4239AUT+T over MAX4238AUT+?

A: MAX4239AUT+T provides a gain bandwidth product of 6.5 MHz versus 1 MHz for MAX4238AUT+, and a slew rate of 1.6 V/µs versus 350 mV/µs. MAX4239AUT+T is suitable for higher-frequency applications, while MAX4238AUT+ is optimized for precision, low-offset applications.

Q: Why is ISL28148FHZ-T7A listed as a substitute if it is also obsolete?

A: ISL28148FHZ-T7A is included because it meets the core electrical and mechanical substitution criteria. However, its obsolete status means it should only be selected if existing inventory is available. For new designs, active products MAX4238AUT+ or MAX4239AUT+T are recommended.

Q: Does the lower input bias current of substitute parts affect circuit design?

A: All substitute parts feature 1 pA input bias current compared to 4 pA for the LMV715MF/NOPB. This reduction is beneficial and does not require circuit redesign. Lower input bias current reduces input offset errors and improves precision in high-impedance applications.

Q: Are there packaging differences between the substitute parts?

A: All substitute parts use SOT-23-6 surface mount packaging, ensuring mechanical compatibility. ISL28148FHZ-T7A is supplied in Tape & Reel format, while MAX4238AUT+ and MAX4239AUT+T are available in Cut Tape and Digi-Reel formats. Verify packaging availability with your supplier for procurement requirements.

Q: What is the impact of the extended operating temperature range on reliability?

A: Substitute parts rated to 125°C provide enhanced thermal margin for applications operating in elevated ambient conditions. This extended range does not affect reliability in standard temperature environments and represents an improvement over the LMV715MF/NOPB maximum of 85°C.

Q: Can MAX4238AUT+ be used in high-speed signal conditioning applications?

A: MAX4238AUT+ is optimized for precision and low-noise performance with a 1 MHz gain bandwidth product. For high-speed applications requiring bandwidth above 1 MHz, MAX4239AUT+T at 6.5 MHz is the appropriate selection.