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MAX400CSA Equivalent & Substitute Parts Reference
Part Overview
The MAX400CSA is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, packaged in 8-SOIC surface mount configuration. This device is classified as obsolete, with 2400 pieces available in new original stock. The MAX400CSA operates across a wide supply voltage range of 6V to 36V and is suitable for general-purpose amplification applications requiring moderate bandwidth and low input offset voltage.
Due to its obsolete product status, identifying equivalent and substitute parts is essential for design continuity, long-term availability assurance, and potential performance optimization in new designs. Substitute parts listed below maintain functional compatibility while offering improved specifications or active product status.
Substiute Parts
Key Parameters
| Parameter | MAX400CSA | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 1 | — |
| Slew Rate | 0.3 | V/µs |
| Gain Bandwidth Product | 600 | kHz |
| Current - Input Bias | 700 | pA |
| Voltage - Input Offset | 10 | µV |
| Voltage - Supply Span (Min) | 6 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | 0°C ~ 70°C | — |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| Product Status | Obsolete | — |
| RoHS Status | RoHS non-compliant | — |
Substitute Part Grouping Explanation
Substitute parts for the MAX400CSA are grouped based on strict adherence to the following compatibility criteria:
Primary Substitution Criteria:
- Package / Case: 8-SOIC (0.154", 3.90mm Width)
- Mounting Type: Surface Mount
- Amplifier Type: General Purpose or Instrumentation
- Number of Circuits: 1
- Voltage - Supply Span (Min): ≤ 6V
- Voltage - Supply Span (Max): ≥ 36V
- Voltage - Input Offset: ≤ 10µV (preferred) or within acceptable tolerance
- Operating Temperature: Must encompass or exceed 0°C ~ 70°C range
Grouping Logic:
Group 1 - Direct Functional Equivalents (Identical Specifications): Parts maintaining the same slew rate (0.3V/µs), gain bandwidth product (600 kHz), input offset voltage (10µV), and supply voltage range (6V to 36V). These parts provide pin-for-pin compatibility with identical electrical performance.
Group 2 - Enhanced Performance Substitutes (Improved Specifications): Parts exceeding the MAX400CSA specifications in slew rate, gain bandwidth product, or input bias current while maintaining package compatibility and supply voltage requirements. These parts offer superior performance characteristics suitable for applications requiring faster response or lower noise.
Group 3 - Specialized Amplifier Types: Instrumentation amplifiers or high-speed operational amplifiers with different amplifier classifications but compatible packaging and supply voltage specifications. These parts address specific application requirements beyond general-purpose amplification.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | GBW (kHz/MHz) | Input Bias (pA/nA/µA) | Input Offset (µV) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MAX400CSA | Analog Devices/Maxim | General Purpose | 0.3 | 600 kHz | 700 pA | 10 | 6 | 36 | 0 ~ 70 | Obsolete | Non-compliant |
| OP177FSZ | Analog Devices | General Purpose | 0.3 | 600 kHz | 1.2 nA | 10 | 6 | 36 | -40 ~ 85 | Active | ROHS3 Compliant |
| OPA277U | Texas Instruments | General Purpose | 0.8 | 1 MHz | 500 pA | 10 | 4 | 36 | -40 ~ 85 | Active | ROHS3 Compliant |
| AD620BRZ-R7 | Analog Devices | Instrumentation | 1.2 | 1 MHz | 500 pA | 15 | 4.6 | 36 | -40 ~ 85 | Active | ROHS3 Compliant |
| AD847ARZ | Analog Devices | General Purpose | 300 | 50 MHz | 3.3 µA | 500 | 9 | 36 | -40 ~ 85 | Active | ROHS3 Compliant |
| AD847ARZ-REEL | Analog Devices | General Purpose | 300 | 50 MHz | 3.3 µA | 500 | 9 | 36 | -40 ~ 85 | Active | ROHS3 Compliant |
| AD847ARZ-REEL7 | Analog Devices | General Purpose | 300 | 50 MHz | 3.3 µA | 500 | 9 | 36 | -40 ~ 85 | Active | ROHS3 Compliant |
| AD847JRZ | Analog Devices | General Purpose | 300 | 50 MHz | 3.3 µA | 500 | 9 | 36 | 0 ~ 70 | Active | ROHS3 Compliant |
| AD847JRZ-REEL | Analog Devices | General Purpose | 300 | 50 MHz | 3.3 µA | 500 | 9 | 36 | 0 ~ 70 | Active | ROHS3 Compliant |
| AD847JRZ-REEL7 | Analog Devices | General Purpose | 300 | 50 MHz | 3.3 µA | 500 | 9 | 36 | 0 ~ 70 | Active | ROHS3 Compliant |
| AD848JRZ | Analog Devices | General Purpose | 300 | 175 MHz | 3.3 µA | 200 | 9 | 36 | 0 ~ 70 | Active | ROHS3 Compliant |
Engineering Selection Recommendations
For Direct Replacement with Improved Compliance:
The OP177FSZ represents the closest functional equivalent to the MAX400CSA. It maintains identical electrical specifications (0.3V/µs slew rate, 600 kHz gain bandwidth product, 10µV input offset voltage) and supply voltage range (6V to 36V). The OP177FSZ is manufactured by Analog Devices Inc., carries active product status, and is ROHS3 compliant. The extended operating temperature range (-40°C to 85°C) exceeds the MAX400CSA specification (0°C to 70°C), providing additional design margin. This part is recommended for applications requiring direct substitution with modern compliance certifications.
For Enhanced Performance Applications:
The OPA277U from Texas Instruments offers improved specifications including higher slew rate (0.8V/µs versus 0.3V/µs), increased gain bandwidth product (1 MHz versus 600 kHz), and lower input bias current (500 pA versus 700 pA). The OPA277U maintains the 10µV input offset voltage specification and operates across the required 6V to 36V supply range. This part is ROHS3 compliant and carries active product status. The OPA277U is suitable for applications where improved bandwidth and faster transient response are beneficial.
For Instrumentation Applications:
The AD620BRZ-R7 is a specialized instrumentation amplifier offering 1.2V/µs slew rate and 1 MHz bandwidth. While classified as an instrumentation amplifier rather than general-purpose, it maintains 8-SOIC packaging and 4.6V to 36V supply voltage compatibility. This part is ROHS3 compliant with active product status and is recommended only when instrumentation amplifier functionality is required.
For High-Speed Applications:
The AD847 series (AD847ARZ, AD847ARZ-REEL, AD847ARZ-REEL7, AD847JRZ, AD847JRZ-REEL, AD847JRZ-REEL7) and AD848JRZ represent high-speed general-purpose operational amplifiers with significantly enhanced performance. These parts feature 300V/µs slew rate and gain bandwidth products of 50 MHz (AD847 series) or 175 MHz (AD848JRZ). All variants are ROHS3 compliant with active product status. These parts require minimum 9V supply voltage and are suitable only for applications where high-speed operation is essential. The AD847JRZ and AD847JRZ-REEL variants maintain the 0°C to 70°C operating temperature range matching the MAX400CSA.
Compliance Considerations:
All recommended substitute parts are ROHS3 compliant, addressing the non-compliance status of the obsolete MAX400CSA. Selection should prioritize active product status parts to ensure long-term availability and supply chain continuity.
Frequently Asked Questions (FAQ)
Q1: Can the OP177FSZ be used as a direct pin-for-pin replacement for the MAX400CSA?
A: Yes. The OP177FSZ maintains identical electrical specifications (0.3V/µs slew rate, 600 kHz gain bandwidth product, 10µV input offset voltage) and operates across the same 6V to 36V supply voltage range. Both devices are packaged in 8-SOIC surface mount configuration. The OP177FSZ is pin-compatible and functionally equivalent. The extended operating temperature range (-40°C to 85°C) provides additional design margin beyond the MAX400CSA specification (0°C to 70°C).
Q2: What are the key differences between the OPA277U and the MAX400CSA?
A: The OPA277U offers enhanced performance specifications: slew rate of 0.8V/µs (versus 0.3V/µs), gain bandwidth product of 1 MHz (versus 600 kHz), and input bias current of 500 pA (versus 700 pA). Both maintain 10µV input offset voltage and operate across compatible supply voltage ranges. The OPA277U requires minimum 4V supply (versus 6V for MAX400CSA) and operates across -40°C to 85°C. These improvements make the OPA277U suitable for applications requiring faster response and lower input bias current.
Q3: Is the AD620BRZ-R7 suitable as a substitute for general-purpose amplification?
A: The AD620BRZ-R7 is classified as an instrumentation amplifier, not a general-purpose operational amplifier. While it maintains 8-SOIC packaging and compatible supply voltage range (4.6V to 36V), its functional architecture differs from the MAX400CSA. The AD620BRZ-R7 is recommended only for applications specifically requiring instrumentation amplifier functionality, such as precision signal conditioning with high input impedance and common-mode rejection.
Q4: Why do the AD847 and AD848 series have higher minimum supply voltage requirements?
A: The AD847 and AD848 series are high-speed operational amplifiers requiring minimum 9V supply voltage to achieve their specified performance characteristics (300V/µs slew rate, 50 MHz to 175 MHz gain bandwidth product). The MAX400CSA operates at lower supply voltages (minimum 6V) due to its lower bandwidth design. Applications limited to 6V to 8V supply voltage cannot use the AD847 or AD848 series.
Q5: What is the significance of packaging variants (Tube, Cut Tape & Digi-Reel, Tape & Reel)?
A: Packaging variants affect supply chain logistics and handling procedures but do not alter electrical specifications. Tube packaging is suitable for manual assembly or small-quantity applications. Cut Tape & Digi-Reel packaging accommodates automated pick-and-place equipment with standard reel compatibility. Tape & Reel packaging is optimized for high-volume production. All variants of a given part number (e.g., AD847ARZ, AD847ARZ-REEL, AD847ARZ-REEL7) maintain identical electrical performance.
Q6: Are all substitute parts ROHS3 compliant?
A: Yes. All substitute parts listed in this reference are ROHS3 compliant. The MAX400CSA is RoHS non-compliant. Substitution with any listed part addresses regulatory compliance requirements for new designs or manufacturing processes subject to RoHS directives.
Q7: Which substitute part is recommended for direct replacement in existing designs?
A: The OP177FSZ is recommended for direct replacement. It maintains identical electrical specifications, 8-SOIC packaging, and 6V to 36V supply voltage range. The OP177FSZ is manufactured by Analog Devices Inc., carries active product status, and is ROHS3 compliant. No circuit modifications are required for substitution.
Q8: Can the AD848JRZ be used in applications designed for the MAX400CSA?
A: The AD848JRZ can be used in applications designed for the MAX400CSA only if the application can tolerate significantly enhanced performance characteristics and higher supply voltage requirements (minimum 9V). The AD848JRZ features 300V/µs slew rate and 175 MHz gain bandwidth product, substantially exceeding MAX400CSA specifications. Applications sensitive to noise or stability at lower frequencies may require circuit redesign. The AD848JRZ is suitable only when high-speed operation is required.
Q9: What inventory levels are available for substitute parts?
A: Inventory availability varies by part number. OP177FSZ has 7795 pieces in stock. OPA277U has 9050 pieces. AD620BRZ-R7 has 36091 pieces. AD847 series variants range from 1190 to 4900 pieces. AD848JRZ has 1959 pieces. Inventory levels should be verified with suppliers for current availability and lead time requirements.
Q10: Are there temperature-matched variants of the substitute parts?
A: Yes. The AD847JRZ, AD847JRZ-REEL, and AD847JRZ-REEL7 variants maintain the 0°C to 70°C operating temperature range matching the MAX400CSA, while other AD847 variants (ARZ series) operate across -40°C to 85°C. The AD848JRZ also maintains 0°C to 70°C operation. Selection of temperature-matched variants ensures compatibility with existing thermal design specifications.
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