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MAX4275AOESA Equivalent & Substitute Parts
Part Overview
The MAX4275AOESA is a general purpose operational amplifier featuring dual circuits in an 8-SOIC surface mount package, manufactured by Analog Devices Inc./Maxim Integrated. This device provides rail-to-rail output capability with a 2 MHz gain bandwidth product and operates across a 2.5V to 5.5V supply range. The part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and production continuity. Substitute parts must maintain functional compatibility through matching package geometry, circuit count, output type, and electrical operating parameters within acceptable tolerances.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | MAX4275AOESA | — |
| Manufacturer | Analog Devices Inc./Maxim Integrated | — |
| Category | Linear, Amplifiers | — |
| Amplifier Type | General Purpose | — |
| Number of Circuits | 2 | — |
| Output Type | Rail-to-Rail | — |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| Slew Rate | 0.7 | V/µs |
| Gain Bandwidth Product | 2 | MHz |
| Voltage - Supply Span (Min) | 2.5 | V |
| Voltage - Supply Span (Max) | 5.5 | V |
| Operating Temperature | -40 to 85 | °C |
| Current - Supply | 355 (x2 Channels) | µA |
| Current - Output / Channel | 65 | mA |
| Current - Input Bias | 50 | pA |
| Voltage - Input Offset | 500 | µV |
| Product Status | Obsolete | — |
| RoHS Status | RoHS non-compliant | — |
Substitute Part Grouping Explanation
Substitution of the MAX4275AOESA requires matching the following critical parameters:
Package Compatibility: The 8-SOIC (0.154", 3.90mm Width) surface mount package is the primary mechanical constraint. Substitute parts must use identical or functionally equivalent package footprints to ensure PCB compatibility without redesign.
Circuit Configuration: Dual-circuit (2-channel) operational amplifier topology is mandatory. Single-channel or quad-channel alternatives are not direct substitutes.
Output Type: Rail-to-rail output capability is required for applications utilizing the full supply voltage swing. Parts with limited output swing are not equivalent.
Supply Voltage Range: Substitute parts must operate within or encompass the 2.5V to 5.5V supply range. Parts with narrower ranges may not function in all intended applications.
Electrical Performance: While the MAX4275AOESA operates at 0.7V/µs slew rate and 2 MHz gain bandwidth product, substitute parts with equal or superior performance in these parameters are acceptable. Input bias current, input offset voltage, and output current drive capability must be compatible with circuit requirements.
Product Status & Compliance: Active substitute parts with current manufacturing status and RoHS3 compliance are preferred for new designs. Obsolete substitutes are acceptable only for legacy system maintenance.
Substitute parts are grouped into two categories: direct performance upgrades (ADA4692 series, LMV772 series) offering improved specifications while maintaining functional compatibility, and alternative topologies (BU7442 series, MCP602) providing similar performance through different amplifier architectures.
Parameter Comparison
| Parameter | MAX4275AOESA | ADA4692-2ARZ | LMV772MAX/NOPB | MCP602T-E/SN | LMR358FJ-GE2 | BU7442SF-E2 |
|---|---|---|---|---|---|---|
| Manufacturer | Analog Devices | Analog Devices | Texas Instruments | Microchip | Rohm | Rohm |
| Number of Circuits | 2 | 2 | 2 | 2 | 2 | 2 |
| Amplifier Type | General Purpose | General Purpose | General Purpose | CMOS | General Purpose | CMOS |
| Output Type | Rail-to-Rail | Rail-to-Rail | Differential, Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | — |
| Package / Case | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.173", 4.40mm) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Slew Rate (V/µs) | 0.7 | 1.3 | 1.4 | 2.3 | 1.0 | 0.3 |
| Gain Bandwidth Product (MHz) | 2 | 3.6 | 3.5 | 2.8 | 3 | 0.6 |
| Voltage - Supply Span Min (V) | 2.5 | 2.7 | 2.7 | 2.7 | 2.7 | 1.7 |
| Voltage - Supply Span Max (V) | 5.5 | 5.0 | 5.5 | 6.0 | 5.5 | 5.5 |
| Operating Temperature (°C) | -40 to 85 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 85 | -40 to 105 |
| Current - Supply (µA) | 355 (x2) | 180 (x2) | 600 (x2) | 230 (x2) | 210 | 100 |
| Current - Output / Channel (mA) | 65 | 55 | 75 | 22 | 60 | 10 |
| Current - Input Bias (pA) | 50 | 0.5 | 0.23 | 1 | 15 nA | 1 |
| Voltage - Input Offset (µV) | 500 | 500 | 250 | 700 | 100 | 1000 |
| Product Status | Obsolete | Active | Active | Active | Active | Active |
| RoHS Status | Non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility):
The ADA4692-2ARZ series (ADA4692-2ARZ, ADA4692-2ARZ-R7, ADA4692-2ARZ-RL) represents the manufacturer-recommended direct replacement. These parts maintain identical package geometry, dual-circuit configuration, and rail-to-rail output type. The ADA4692 series provides superior electrical performance with 1.3V/µs slew rate and 3.6 MHz gain bandwidth product, reduced supply current (180µA vs. 355µA), and extended operating temperature range (-40°C to 125°C). All variants are ROHS3 compliant and carry active product status. Selection among the three packaging options (Tube, Cut Tape & Digi-Reel, Tape & Reel) depends on procurement and assembly requirements.
Secondary Substitutes (Performance Enhancement):
The LMV772MA/NOPB and LMV772MAX/NOPB (Texas Instruments LMV® series) offer enhanced performance with 1.4V/µs slew rate and 3.5 MHz gain bandwidth product. These parts feature differential output capability in addition to rail-to-rail operation, lower input offset voltage (250µV), and extended temperature range to 125°C. Supply current is higher at 600µA, and maximum supply voltage is limited to 5.5V (matching the MAX4275AOESA upper limit). Both variants are ROHS3 compliant and active.
Alternative Topology Substitutes:
The MCP602T-E/SN (Microchip CMOS amplifier) provides 2.3V/µs slew rate and 2.8 MHz gain bandwidth product with rail-to-rail output. This part offers extended maximum supply voltage (6V) and ROHS3 compliance. Output current per channel is reduced to 22mA, which may limit applications requiring higher drive capability.
The LMR358FJ-GE2 (Rohm general purpose amplifier) delivers 1V/µs slew rate and 3 MHz gain bandwidth product with rail-to-rail output. This part maintains the -40°C to 85°C temperature range matching the original device and provides ROHS3 compliance.
The BU7442SF-E2 (Rohm CMOS amplifier) operates at 0.3V/µs slew rate and 600 kHz gain bandwidth product. This part is suitable only for applications with relaxed bandwidth requirements. Package width differs (4.40mm vs. 3.90mm), requiring PCB layout verification. Extended temperature range to 105°C and ROHS3 compliance are provided.
Compliance Considerations:
All recommended substitutes are ROHS3 compliant, addressing environmental regulatory requirements absent in the obsolete MAX4275AOESA. For legacy system maintenance where RoHS compliance is not mandated, the original part remains available in inventory (883 pcs).
Supply Voltage Compatibility:
The ADA4692-2ARZ series maximum supply voltage is 5.0V, which is 0.5V below the MAX4275AOESA specification of 5.5V. Applications operating at the upper supply limit require verification that the reduced maximum voltage is acceptable. All other substitutes maintain or exceed the 5.5V maximum specification.
Frequently Asked Questions (FAQ)
Q: Can the ADA4692-2ARZ series be used as a direct drop-in replacement for the MAX4275AOESA?
A: The ADA4692-2ARZ series is mechanically and functionally compatible with identical 8-SOIC package geometry, dual-circuit configuration, and rail-to-rail output type. Electrical performance is superior across all measured parameters. The primary consideration is the reduced maximum supply voltage (5.0V vs. 5.5V). Verify that your application does not require operation at supply voltages between 5.0V and 5.5V. If such operation is required, select an alternative substitute.
Q: What is the difference between ADA4692-2ARZ, ADA4692-2ARZ-R7, and ADA4692-2ARZ-RL?
A: These three part numbers represent identical electrical specifications and performance characteristics. The differences are packaging and delivery format: ADA4692-2ARZ is supplied in Tube packaging, ADA4692-2ARZ-R7 is supplied in Cut Tape & Digi-Reel format, and ADA4692-2ARZ-RL is supplied in Tape & Reel format. Selection depends on your procurement process and assembly equipment compatibility. All three are ROHS3 compliant and active products.
Q: Why does the BU7442SF-E2 have a different package width (4.40mm vs. 3.90mm)?
A: The BU7442SF-E2 uses an 8-SOP package variant with 4.40mm width, compared to the standard 8-SOIC package at 3.90mm width. While both are 8-pin surface mount packages, the different width may affect PCB footprint compatibility. Verify that your PCB layout can accommodate the wider package before selecting this substitute. The narrower 3.90mm packages (ADA4692, LMV772, MCP602, LMR358) are preferred for direct PCB compatibility.
Q: Is the LMV772 series suitable for applications requiring high output current?
A: The LMV772MA/NOPB and LMV772MAX/NOPB provide 75mA output current per channel, which exceeds the MAX4275AOESA specification of 65mA. However, these parts draw higher supply current (600µA vs. 355µA). For applications with stringent power consumption requirements, the ADA4692-2ARZ series (55mA output, 180µA supply) or LMR358FJ-GE2 (60mA output, 210µA supply) may be more suitable.
Q: Can I use the MCP602T-E/SN if my application requires maximum supply voltage of 6V?
A: Yes. The MCP602T-E/SN supports supply voltages up to 6V, exceeding the MAX4275AOESA specification of 5.5V. This part is suitable for applications requiring extended supply voltage range. However, output current per channel is limited to 22mA, which is significantly lower than the original device (65mA). Verify that your application does not require high output current drive capability.
Q: What is the impact of using a substitute with lower slew rate, such as the BU7442SF-E2 at 0.3V/µs?
A: Slew rate determines the maximum rate of change of output voltage. The BU7442SF-E2 at 0.3V/µs is significantly slower than the MAX4275AOESA at 0.7V/µs. This substitute is suitable only for applications with low-frequency signals or relaxed transient response requirements. For audio, instrumentation, or signal conditioning applications requiring fast transient response, select substitutes with slew rates of 1.0V/µs or higher (ADA4692, LMV772, MCP602, LMR358).
Q: Are all recommended substitutes RoHS compliant?
A: Yes. All active substitute parts listed (ADA4692-2ARZ series, LMV772 series, MCP602T-E/SN, LMR358FJ-GE2, BU7442SF-E2) are ROHS3 compliant. The original MAX4275AOESA is RoHS non-compliant. For new designs and applications subject to environmental regulations, substitute parts provide regulatory compliance.
Q: What is the temperature range consideration when selecting a substitute?
A: The MAX4275AOESA operates from -40°C to 85°C. Most recommended substitutes extend the upper temperature limit to 125°C (ADA4692, LMV772, MCP602) or 105°C (BU7442SF-E2), providing improved thermal margin. The LMR358FJ-GE2 maintains the original -40°C to 85°C range. For applications with elevated ambient temperature or thermal stress, substitutes with extended temperature range provide additional design margin.
Q: Can I substitute the MAX4275AOESA with a single-channel amplifier to reduce cost?
A: No. The MAX4275AOESA is a dual-circuit (2-channel) amplifier. Single-channel substitutes do not provide functional equivalence. If your application requires only one amplifier channel, you may use a dual-channel substitute and leave the second channel unused, but this does not reduce cost compared to using the full dual-channel device.
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