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MAX4487ASD Equivalent & Substitute Parts
Part Overview
The MAX4487ASD is a general purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, configured as a 4-circuit rail-to-rail amplifier in a 14-SOIC surface mount package. This device is classified as obsolete product status, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The MAX4487ASD operates across a 2.7V to 5.5V supply range with a slew rate of 20V/µs and gain bandwidth product of 7 MHz, suitable for general purpose amplification applications requiring moderate speed performance.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | MAX4487ASD | |
| Manufacturer | Analog Devices Inc./Maxim Integrated | |
| Product Status | Obsolete | |
| Amplifier Type | General Purpose | |
| Number of Circuits | 4 | |
| Output Type | Rail-to-Rail | |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | |
| Slew Rate | 20 | V/µs |
| Gain Bandwidth Product | 7 | MHz |
| Current - Input Bias | 0.1 | pA |
| Voltage - Input Offset | 300 | µV |
| Current - Supply | 2.2 | mA (x4 Channels) |
| Current - Output / Channel | 33 | mA |
| Voltage - Supply Span (Min) | 2.7 | V |
| Voltage - Supply Span (Max) | 5.5 | V |
| Operating Temperature | -40 to 125 | °C |
| Mounting Type | Surface Mount | |
| RoHS Status | RoHS non-compliant | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the MAX4487ASD is determined by the following critical parameters: 4-circuit configuration, rail-to-rail output capability, 14-SOIC package form factor, surface mount technology, and compatible supply voltage range (2.7V to 5.5V minimum). Secondary parameters including slew rate, gain bandwidth product, input bias current, and output current drive capability define performance compatibility within application-specific requirements.
The substitute parts are grouped into two categories based on electrical performance characteristics:
Category 1: High-Speed General Purpose Amplifiers - Parts with slew rates and gain bandwidth products comparable to or exceeding the MAX4487ASD (LMR934F-GE2, LMV324LIDT). These substitutes maintain similar frequency response and transient performance.
Category 2: Low-Power CMOS Amplifiers - Parts with reduced supply current and lower slew rates (BU7244F-E2, BU7244SF-E2). These substitutes prioritize power efficiency over speed performance.
Category 3: Precision Low-Power Amplifiers - Parts with ultra-low input offset voltage and minimal input bias current (LMP2234 series). These substitutes emphasize precision characteristics over speed.
All substitute parts maintain the 4-circuit configuration, rail-to-rail output, and surface mount 14-pin package requirement. Supply voltage compatibility spans the 2.7V to 5.5V range or compatible subsets thereof.
Parameter Comparison
| Parameter | MAX4487ASD | BU7244F-E2 | BU7244SF-E2 | LMP2234AMA/NOPB | LMR934F-GE2 | LMV324IDR | LMV324LIDT |
|---|---|---|---|---|---|---|---|
| Manufacturer | Analog Devices | Rohm | Rohm | Texas Instruments | Rohm | UMW | STMicroelectronics |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active |
| Amplifier Type | General Purpose | CMOS | CMOS | General Purpose | General Purpose | Voltage Feedback | General Purpose |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Differential, Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Package / Case | 14-SOIC (0.154", 3.90mm) | 14-SOIC (0.173", 4.40mm) | 14-SOIC (0.173", 4.40mm) | 14-SOIC (0.154", 3.90mm) | 14-SOIC (0.173", 4.40mm) | 14-SOIC (0.154", 3.90mm) | 14-SOIC (0.154", 3.90mm) |
| Slew Rate (V/µs) | 20 | 0.4 | 0.4 | 0.048 | 0.35 | Not specified | 0.7 |
| Gain Bandwidth Product (MHz) | 7 | 0.9 | 0.9 | 0.13 | 1.4 | 1 | 1.3 |
| Current - Input Bias (pA) | 0.1 | 1 | 1 | 0.02 | 5000 | 10 | 27000 |
| Voltage - Input Offset (µV) | 300 | 1000 | 1000 | 10 | 1000 | 800 | 1000 |
| Current - Supply (mA) | 2.2 | 0.36 | 0.36 | 0.036 | 0.25 | 0.045 | 0.13 |
| Current - Output / Channel (mA) | 33 | 12 | 12 | 30 | 90 | 25 | 70 |
| Voltage - Supply Span Min (V) | 2.7 | 1.8 | 1.8 | 1.6 | 1.8 | 2.1 | 2.7 |
| Voltage - Supply Span Max (V) | 5.5 | 5.5 | 5.5 | 5.5 | 5 | 5.5 | 5.5 |
| Operating Temperature (°C) | -40 to 125 | -40 to 85 | -40 to 85 | -40 to 125 | -40 to 85 | -25 to 85 | -40 to 125 |
| RoHS Status | Non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
For Direct Replacement with Maintained Performance Characteristics:
LMV324LIDT is the primary substitute when maximum compatibility with the MAX4487ASD operating parameters is required. This part maintains the identical 14-SOIC (0.154", 3.90mm) package footprint, extended temperature range (-40°C to 125°C), and supply voltage compatibility (2.7V to 5.5V). LMV324LIDT is manufactured by STMicroelectronics with active product status and ROHS3 compliance. The slew rate of 0.7V/µs and gain bandwidth product of 1.3 MHz represent reduced performance compared to the MAX4487ASD, but remain suitable for general purpose amplification applications not requiring the original 20V/µs slew rate.
For Low-Power Applications:
LMP2234 series parts (LMP2234AMA/NOPB, LMP2234AMAE/NOPB, LMP2234AMAX/NOPB, LMP2234BMA/NOPB, LMP2234BMAX/NOPB) provide precision characteristics with ultra-low input offset voltage (10µV) and minimal input bias current (0.02pA). These parts maintain the 14-SOIC (0.154", 3.90mm) package and extended temperature range. Supply current of 36µA represents significant power reduction compared to the MAX4487ASD. All LMP2234 variants are manufactured by Texas Instruments with active product status and ROHS3 compliance. Operating temperature range extends to -40°C to 125°C, matching the MAX4487ASD specification.
For High Output Current Applications:
LMR934F-GE2 manufactured by Rohm Semiconductor provides 90mA output current per channel, exceeding the MAX4487ASD specification of 33mA. This part operates across 1.8V to 5V supply range with active product status and ROHS3 compliance. The 14-SOIC (0.173", 4.40mm) package represents a minor footprint variation. Operating temperature range is -40°C to 85°C, which is narrower than the MAX4487ASD.
For CMOS Technology Substitution:
BU7244F-E2 and BU7244SF-E2 manufactured by Rohm Semiconductor offer CMOS amplifier architecture with ultra-low supply current (360µA). Both parts maintain rail-to-rail output and 4-circuit configuration. The 14-SOIC (0.173", 4.40mm) package represents a minor footprint variation. Operating temperature range is -40°C to 85°C. Both variants are ROHS3 compliant with active product status.
For General Purpose Voltage Feedback Applications:
LMV324IDR manufactured by UMW provides voltage feedback amplifier architecture with 1MHz gain bandwidth product and 45µA supply current. This part maintains the 14-SOIC (0.154", 3.90mm) package footprint and rail-to-rail output. Operating temperature range is -25°C to 85°C, which is narrower than the MAX4487ASD. ROHS3 compliance and active product status are confirmed.
All substitute parts listed maintain MSL 1 (Unlimited) moisture sensitivity level, matching the MAX4487ASD specification. Selection should be based on specific application requirements for slew rate, gain bandwidth product, supply current, output current drive, and operating temperature range.
Frequently Asked Questions (FAQ)
Q1: Can LMV324LIDT directly replace MAX4487ASD in existing PCB layouts?
A: LMV324LIDT uses the same 14-SOIC (0.154", 3.90mm) package as MAX4487ASD, enabling direct pin-compatible substitution on existing PCBs. However, electrical performance differs: LMV324LIDT provides 0.7V/µs slew rate and 1.3MHz gain bandwidth product compared to MAX4487ASD's 20V/µs and 7MHz. Verify that application requirements tolerate these reduced performance specifications before implementation.
Q2: What is the primary difference between BU7244F-E2 and BU7244SF-E2?
A: Both parts are electrically identical CMOS 4-circuit amplifiers with identical electrical specifications. The difference is packaging format: BU7244F-E2 is supplied in Cut Tape (CT) & Digi-Reel format, while BU7244SF-E2 is supplied in Tape & Reel (TR) format. Selection depends on procurement and assembly requirements rather than electrical performance.
Q3: Why do LMP2234 series parts have lower slew rate than MAX4487ASD?
A: LMP2234 series parts are precision low-power amplifiers optimized for minimal input offset voltage (10µV) and input bias current (0.02pA), with supply current of 36µA. This design approach results in lower slew rate (0.048V/µs) and gain bandwidth product (130kHz) compared to MAX4487ASD. These parts are suitable for precision measurement and low-power applications where speed is not the primary requirement.
Q4: Can BU7244F-E2 operate at the full 5.5V supply voltage of MAX4487ASD?
A: BU7244F-E2 operates across 1.8V to 5.5V supply range, which includes the full 5.5V maximum of MAX4487ASD. However, the minimum supply voltage is 1.8V compared to MAX4487ASD's 2.7V minimum. Verify that your application's minimum supply voltage meets or exceeds 1.8V for BU7244F-E2 operation.
Q5: What is the package footprint difference between MAX4487ASD and LMR934F-GE2?
A: MAX4487ASD uses 14-SOIC (0.154", 3.90mm width) package, while LMR934F-GE2 uses 14-SOIC (0.173", 4.40mm width) package. The 0.019" (0.50mm) width difference may require PCB layout modification. Verify that existing PCB footprints can accommodate the wider package before selecting LMR934F-GE2.
Q6: Are all substitute parts RoHS compliant?
A: All substitute parts listed are ROHS3 compliant. MAX4487ASD is RoHS non-compliant. If RoHS compliance is a design requirement, any of the listed substitute parts satisfy this requirement.
Q7: Which substitute part provides the lowest supply current consumption?
A: LMP2234 series parts provide the lowest supply current at 36µA (x4 channels), followed by BU7244F-E2 and BU7244SF-E2 at 360µA. MAX4487ASD draws 2.2mA. For battery-powered or ultra-low-power applications, LMP2234 series parts are the optimal choice.
Q8: Can LMV324IDR operate at -40°C like MAX4487ASD?
A: LMV324IDR operates across -25°C to 85°C temperature range, which does not extend to -40°C. MAX4487ASD and most other substitute parts (LMV324LIDT, LMP2234 series, BU7244 series, LMR934F-GE2) support -40°C minimum operating temperature. If -40°C operation is required, LMV324IDR is not suitable.
Q9: What output current capability is required for substitute selection?
A: MAX4487ASD provides 33mA per channel output current. LMP2234 series provides 30mA, LMV324LIDT provides 70mA, LMR934F-GE2 provides 90mA, BU7244 series provides 12mA, and LMV324IDR provides 25mA. Select a substitute with output current rating equal to or exceeding your application requirement.
Q10: Is the differential output capability of LMP2234 series compatible with MAX4487ASD applications?
A: LMP2234 series parts feature differential, rail-to-rail output configuration, while MAX4487ASD provides standard rail-to-rail output. Differential output capability is a superset of standard rail-to-rail functionality. LMP2234 series can be used in applications designed for standard rail-to-rail amplifiers, with the differential output feature available for advanced applications if needed.
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