LMV771MG Equivalent & Substitute Parts

Part Overview

The LMV771MG is a general-purpose operational amplifier manufactured by Texas Instruments, housed in a 5-TSSOP (SC-70-5/SOT-353) surface-mount package. This device features rail-to-rail output capability and is designed for low-power analog signal processing applications across a 2.7 V to 5.5 V supply range.

The LMV771MG is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

LMV771MG

Texas InstrumentsIn Stock: 7695LMV771MG Datasheet

Current PartRFQ

LMV771MG/NOPB

Texas InstrumentsIn Stock: 28174LMV771MG/NOPB Datasheet

DirectRFQ

LMV821AICT

STMicroelectronicsIn Stock: 34851LMV821AICT Datasheet

MFR RecommendedRFQ

LMV821SQ3T2G

onsemiIn Stock: 44370LMV821SQ3T2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LMV771MG is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Amplifier type: General purpose
• Number of circuits: 1
• Output type: Rail-to-rail
• Supply voltage range: Minimum 2.7 V, maximum 5.5 V
• Operating temperature range: -40°C to 125°C

Mechanical Compatibility Requirements:

• Mounting type: Surface mount
• Package / case: 5-TSSOP, SC-70-5, SOT-353

Performance Parameters (Allowable Variation): Substitute parts may exhibit different values for slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current, provided they remain within acceptable operational limits for the target application and do not degrade system performance.

The substitute parts identified below satisfy all electrical and mechanical compatibility requirements while maintaining functional equivalence for general-purpose amplification applications.

Parameter Comparison

Engineering Selection Recommendations

LMV771MG/NOPB (Texas Instruments)

This part is the direct equivalent of the LMV771MG with identical electrical and mechanical specifications. The primary distinction is product status: LMV771MG/NOPB is active and currently in production, whereas the base LMV771MG is obsolete. This part carries ROHS3 compliance, addressing regulatory requirements for new designs. Selection of LMV771MG/NOPB is appropriate for applications requiring exact parameter matching and continuity with existing designs. Inventory availability is significantly higher (28,151 units) compared to the main part number.

LMV821AICT (STMicroelectronics)

This part is functionally equivalent with enhanced performance characteristics. The LMV821AICT exhibits higher slew rate (1.9 V/µs vs. 1.4 V/µs), greater gain bandwidth product (5.5 MHz vs. 3.5 MHz), and lower supply current (300 µA vs. 600 µA). Input bias current is higher (60 nA vs. 0.23 pA), and input offset voltage is increased (800 µV vs. 250 µV). The part maintains rail-to-rail output, identical supply voltage range, and full operating temperature coverage (-40°C to 125°C). ROHS3 compliance is confirmed. This substitute is suitable for applications where improved bandwidth and reduced power consumption are beneficial, provided the higher input offset voltage does not compromise circuit accuracy requirements.

LMV821SQ3T2G (onsemi)

This part provides functional equivalence with performance enhancements in slew rate (2.0 V/µs) and gain bandwidth product (5.6 MHz). Supply current is reduced to 300 µA. Output current per channel is lower (45 mA vs. 75 mA), which may be a limiting factor in high-current applications. Operating temperature range is restricted to -40°C to 85°C, which does not cover the full temperature span of the original part. ROHS3 compliance is confirmed. This substitute is applicable to applications operating within the reduced temperature range where the lower output current capability is acceptable.

All three substitute parts maintain identical package form factor (5-TSSOP, SC-70-5, SOT-353) and are pin-compatible with the LMV771MG.

Frequently Asked Questions (FAQ)

Q: Can LMV771MG/NOPB be used as a direct replacement for LMV771MG?

A: Yes. LMV771MG/NOPB is electrically and mechanically identical to LMV771MG. The primary difference is product status: LMV771MG/NOPB is active and in production, while LMV771MG is obsolete. LMV771MG/NOPB also carries ROHS3 compliance. This part is the recommended choice for direct substitution.

Q: What are the key differences between LMV821AICT and the original LMV771MG?

A: LMV821AICT offers improved performance with higher slew rate (1.9 V/µs vs. 1.4 V/µs) and greater gain bandwidth product (5.5 MHz vs. 3.5 MHz). Supply current is reduced by 50% (300 µA vs. 600 µA). However, input bias current increases from 0.23 pA to 60 nA, and input offset voltage increases from 250 µV to 800 µV. Both parts maintain rail-to-rail output and identical supply voltage range. Selection depends on whether the application can tolerate higher input offset voltage in exchange for improved bandwidth and lower power consumption.

Q: Is LMV821SQ3T2G suitable for all applications using LMV771MG?

A: LMV821SQ3T2G is suitable for applications operating within -40°C to 85°C. The original LMV771MG operates to 125°C, so this substitute is not appropriate for high-temperature applications exceeding 85°C. Additionally, output current per channel is limited to 45 mA compared to 75 mA in the original part. Verify that your application does not require operation above 85°C or output currents exceeding 45 mA before selecting this substitute.

Q: Are all substitute parts pin-compatible with LMV771MG?

A: Yes. All substitute parts use the 5-TSSOP (SC-70-5, SOT-353) package with identical pinout. Direct PCB substitution is possible without layout modifications.

Q: What is the significance of RoHS compliance for these parts?

A: LMV771MG is RoHS non-compliant, while all substitute parts (LMV771MG/NOPB, LMV821AICT, and LMV821SQ3T2G) are ROHS3 compliant. ROHS3 compliance is required for new designs and products sold in regulated markets. If your application or end-market requires RoHS compliance, select from the compliant substitute parts.

Q: Can I use LMV821AICT or LMV821SQ3T2G in a design originally specified for LMV771MG without circuit modifications?

A: Electrical compatibility is maintained for basic amplifier functionality. However, circuit performance may change due to differences in slew rate, gain bandwidth product, input offset voltage, and output current. Verify that these parameter variations do not degrade system performance. Input offset voltage differences may require recalibration of precision circuits. Output current limitations may affect load-driving capability. Conduct application-specific validation before production implementation.

Q: Which substitute part should I select for a new design?

A: For new designs, LMV771MG/NOPB is the recommended choice, as it provides exact parameter matching with the original part while offering active product status and ROHS3 compliance. If improved bandwidth and reduced power consumption are design objectives, LMV821AICT is suitable for applications operating across the full -40°C to 125°C temperature range. LMV821SQ3T2G is appropriate only for applications with temperature limits of -40°C to 85°C and output current requirements not exceeding 45 mA.