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MAX4274ADEUA+ Equivalent & Substitute Parts
Part Overview
The MAX4274ADEUA+ is a general purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, featuring dual circuits in an 8-uMAX-EP package with rail-to-rail output capability. This device is classified as Obsolete product status, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.
The MAX4274ADEUA+ serves applications requiring low-power, dual-channel amplification with moderate bandwidth and rail-to-rail output characteristics. Due to its obsolete status, substitute parts must maintain electrical compatibility across critical parameters including supply voltage range, output type, circuit count, and thermal operating range.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 2 | — |
| Output Type | Rail-to-Rail | — |
| Slew Rate | 0.7 | V/µs |
| Gain Bandwidth Product | 2 | MHz |
| -3dB Bandwidth | 590 | kHz |
| Current - Input Bias | 50 | pA |
| Voltage - Input Offset | 500 | µV |
| Current - Supply (x2 Channels) | 330 | µA |
| Current - Output / Channel | 65 | mA |
| Voltage - Supply Span (Min) | 2.5 | V |
| Voltage - Supply Span (Max) | 5.5 | V |
| Operating Temperature | -40 to 85 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the MAX4274ADEUA+ is determined by strict adherence to the following electrical and mechanical parameters:
Primary Substitution Criteria:
- Dual-circuit configuration (2 circuits required)
- Rail-to-rail output capability
- Supply voltage range compatibility (minimum 2.5V, maximum 5.5V)
- Operating temperature range (-40°C to 85°C minimum)
- Surface mount packaging in 8-pin TSSOP or MSOP footprint
- RoHS3 compliance and MSL rating
Secondary Compatibility Parameters:
- Slew rate ≥ 0.3 V/µs (acceptable for general purpose applications)
- Gain bandwidth product ≥ 1 MHz (maintains frequency response capability)
- Input bias current ≤ 50 pA (preserves input impedance characteristics)
- Input offset voltage ≤ 1 mV (maintains DC accuracy)
- Output current per channel ≥ 10 mA (ensures load driving capability)
Substitute parts are grouped into three functional categories based on amplifier type: General Purpose, CMOS, and Audio. Each category maintains the dual-circuit, rail-to-rail, 8-pin surface mount architecture while offering variations in performance characteristics suited to specific application requirements.
Parameter Comparison
| Parameter | MAX4274ADEUA+ | AZV832MMTR-G1 | BU7442FVM-TR | BU7442SFVM-TR | BU7462FVM-TR | BU7462SFVM-TR | LME49726MYX/NOPB | LMR358FVJ-GE2 | LMV552MM/NOPB | LMV552MMX/NOPB | LMV772MM/NOPB |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Amplifier Type | General Purpose | CMOS | General Purpose | General Purpose | CMOS | CMOS | Audio | General Purpose | General Purpose | General Purpose | General Purpose |
| Number of Circuits | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Not Specified | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Differential, Rail-to-Rail |
| Slew Rate (V/µs) | 0.7 | 0.45 | 0.3 | 0.3 | 1 | 1 | 3.7 | 1 | 1 | 1 | 1.4 |
| Gain Bandwidth Product (MHz) | 2 | 1 | 0.6 | 0.6 | 1 | 1 | 6.25 | 3 | 3 | 3 | 3.5 |
| Current - Input Bias (pA) | 50 | 1 | 1 | 1 | 1 | 1 | 0.2 | 15 nA | 20 nA | 20 nA | 0.23 |
| Voltage - Input Offset (µV) | 500 | 500 | 1000 | 1000 | 1000 | 1000 | 500 | 100 | 1000 | 1000 | 250 |
| Current - Supply (µA) | 330 | 70 | 100 | 100 | 300 | 300 | 700 | 210 | 37 | 37 | 600 |
| Current - Output / Channel (mA) | 65 | 185 | 10 | 10 | 12 | 12 | 350 | 60 | 25 | 25 | 75 |
| Voltage - Supply Span Min (V) | 2.5 | 1.6 | 1.7 | 1.7 | 1.7 | 1.7 | 2.5 | 2.7 | 2.7 | 2.7 | 2.7 |
| Voltage - Supply Span Max (V) | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| Operating Temperature (°C) | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 105 | -40 to 85 | -40 to 105 | -40 to 85 | -40 to 85 | -40 to 125 | -40 to 125 | -40 to 125 |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad | 8-MSOP (0.118", 3.00mm Width) | 8-VSSOP, 8-MSOP (0.110", 2.80mm Width) | 8-VSSOP, 8-MSOP (0.110", 2.80mm Width) | 8-VSSOP, 8-MSOP (0.110", 2.80mm Width) | 8-VSSOP, 8-MSOP (0.110", 2.80mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 3 (168 Hours) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility):
The BU7442FVM-TR and BU7442SFVM-TR (Rohm Semiconductor) represent the closest functional equivalents to the MAX4274ADEUA+. Both devices maintain general purpose amplifier classification, dual-circuit configuration, rail-to-rail output, and identical supply voltage range (1.7V to 5.5V). The BU7442SFVM-TR extends operating temperature to 105°C, providing enhanced thermal margin. Both are Active status products with ROHS3 compliance and MSL 1 rating, ensuring long-term availability and manufacturing compatibility.
Secondary Substitutes (Acceptable Performance Trade-offs):
The LMR358FVJ-GE2 (Rohm Semiconductor) offers superior gain bandwidth product (3 MHz versus 2 MHz) and lower input offset voltage (100 µV versus 500 µV), with identical supply voltage range and operating temperature. The LMV552MM/NOPB and LMV552MMX/NOPB (Texas Instruments) provide extended operating temperature to 125°C and significantly reduced supply current (37 µA versus 330 µA), beneficial for battery-powered applications. Both maintain full supply voltage compatibility and ROHS3 compliance.
Specialized Substitutes (Application-Specific):
The LMV772MM/NOPB (Texas Instruments) features differential output capability with enhanced gain bandwidth product (3.5 MHz) and extended temperature range (-40°C to 125°C), suitable for precision instrumentation applications. The LME49726MYX/NOPB (Texas Instruments) is classified as an audio amplifier with significantly higher slew rate (3.7 V/µs) and output current (350 mA per channel), appropriate for audio signal processing requiring higher bandwidth and drive capability.
Lower-Performance Alternatives:
The BU7462FVM-TR and BU7462SFVM-TR (Rohm Semiconductor) are CMOS amplifiers with reduced gain bandwidth product (1 MHz) and slew rate (1 V/µs), suitable only for applications with relaxed frequency response requirements. The AZV832MMTR-G1 (Diodes Incorporated) offers CMOS architecture with MSL 3 rating, requiring controlled moisture exposure during storage and handling.
Compliance and Availability:
All substitute parts maintain ROHS3 compliance and are classified as Active status products, ensuring continued manufacturing support and supply chain availability. Selection should prioritize parts with MSL 1 rating for unrestricted storage conditions and extended shelf life.
Frequently Asked Questions (FAQ)
Q1: Can the BU7442FVM-TR directly replace the MAX4274ADEUA+ in existing PCB designs?
A: The BU7442FVM-TR is electrically compatible with the MAX4274ADEUA+ across all critical parameters: dual circuits, rail-to-rail output, 2.5V to 5.5V supply range, and -40°C to 85°C operating temperature. However, package dimensions differ slightly (8-VSSOP/8-MSOP at 0.110" width versus 8-TSSOP/8-MSOP at 0.118" width). PCB footprint verification is required before implementation. Both devices use identical pin configurations for 8-pin MSOP packages.
Q2: What is the significance of MSL (Moisture Sensitivity Level) rating in substitute selection?
A: MSL rating indicates moisture absorption limits during storage and handling. The MAX4274ADEUA+ carries MSL 1 (Unlimited), allowing indefinite storage without desiccant protection. Most substitutes maintain MSL 1 rating, except the AZV832MMTR-G1 (MSL 3, 168 hours maximum). MSL 3 devices require controlled humidity storage and baking procedures before reflow soldering. For production environments without moisture control infrastructure, MSL 1 rated substitutes are preferred.
Q3: How do slew rate differences affect circuit performance?
A: Slew rate determines the maximum rate of output voltage change. The MAX4274ADEUA+ specifies 0.7 V/µs. Substitutes range from 0.3 V/µs (BU7442 series) to 3.7 V/µs (LME49726). Lower slew rates limit high-frequency signal fidelity and transient response. For general purpose applications with bandwidth below 100 kHz, 0.3 V/µs is acceptable. Audio and precision instrumentation applications benefit from higher slew rates (≥1.4 V/µs).
Q4: Why do some substitutes have lower supply current specifications?
A: Supply current variation reflects different amplifier architectures and design optimization. The LMV552 series (37 µA) uses advanced CMOS technology optimized for low power consumption, compared to the MAX4274ADEUA+ (330 µA). Lower supply current reduces power dissipation and heat generation, beneficial for battery-powered and thermally constrained applications. However, lower supply current may correlate with reduced output current capability (25 mA versus 65 mA).
Q5: Are there package footprint compatibility issues between substitute parts?
A: Yes. The MAX4274ADEUA+ uses 8-TSSOP/8-MSOP at 0.118" width with exposed pad. Most Rohm substitutes (BU7442, BU7462 series) use 8-VSSOP/8-MSOP at 0.110" width. Texas Instruments parts (LMR358, LMV552, LMV772) use 8-TSSOP/8-MSOP at 0.118" width, matching the original footprint. The AZV832MMTR-G1 uses standard 8-MSOP at 0.118" width. PCB layout verification is mandatory before design release.
Q6: What is the difference between general purpose, CMOS, and audio amplifier classifications?
A: General Purpose amplifiers (MAX4274, BU7442, LMR358, LMV552, LMV772) are optimized for broad application ranges with balanced performance across bandwidth, noise, and power consumption. CMOS amplifiers (AZV832, BU7462) feature extremely low input bias current (1 pA) and reduced power consumption, suitable for high-impedance signal sources. Audio amplifiers (LME49726) prioritize low noise, high slew rate, and high output current for audio signal processing. Application requirements determine appropriate classification.
Q7: How does operating temperature range affect substitute selection?
A: The MAX4274ADEUA+ operates -40°C to 85°C. Extended-range substitutes include BU7442SFVM-TR (-40°C to 105°C) and LMV552/LMV772 series (-40°C to 125°C). Extended range provides thermal margin for industrial and automotive applications. Standard-range substitutes (-40°C to 85°C) are adequate for commercial electronics. Temperature derating curves must be consulted for applications operating near upper temperature limits.
Q8: What compliance certifications are critical for substitute part selection?
A: All listed substitutes maintain ROHS3 compliance and REACH Unaffected status, matching the MAX4274ADEUA+ regulatory profile. ROHS3 compliance ensures lead-free manufacturing and environmental compliance. REACH Unaffected status confirms absence of Substances of Very High Concern (SVHC). These certifications are mandatory for consumer electronics and regulated industries. All substitutes carry identical ECCN (EAR99) and HTSUS (8542.33.0001) classifications.
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