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MAX480EPA Equivalent & Substitute Parts
Part Overview
The MAX480EPA is a general purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, housed in an 8-DIP through-hole package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The MAX480EPA features low slew rate (0.012V/µs) and ultra-low input bias current (1 nA), suitable for precision analog applications requiring minimal power consumption and low noise characteristics.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 1 | — |
| Slew Rate | 0.012 | V/µs |
| Current - Input Bias | 1 | nA |
| Voltage - Input Offset | 25 | µV |
| Current - Supply | 14 | µA |
| Current - Output / Channel | 5 | mA |
| Voltage - Supply Span (Min) | 1.6 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | -40 to 85 | °C |
| Package / Case | 8-DIP (0.300", 7.62mm) | — |
| Mounting Type | Through Hole | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the MAX480EPA is determined by strict alignment of electrical and mechanical parameters within the following categories:
Primary Substitution Criteria:
- Package type: 8-DIP (0.300", 7.62mm) through-hole mounting
- Amplifier classification: General Purpose or Instrumentation
- Supply voltage range compatibility: Minimum 1.6V to maximum 36V
- Operating temperature range: -40°C to 85°C
- Input bias current: ≤ 1 nA (ultra-low bias requirement)
- Slew rate: ≤ 0.2V/µs (low-speed precision applications)
Substitute Parts Identified:
- LT1012IN8#PBF (Analog Devices Inc.) — General Purpose Amplifier, active status, meets all electrical and mechanical parameters
- OP37EN8#PBF (Analog Devices Inc.) — General Purpose Amplifier, active status, higher slew rate capability
- OP37GN8#PBF (Linear Technology) — General Purpose Amplifier, active status, higher slew rate capability
- OP90GPZ (Analog Devices Inc.) — General Purpose Amplifier, active status, identical slew rate and supply specifications
- OPA241PA (Texas Instruments) — General Purpose Amplifier, rail-to-rail output, last-time-buy status
- AMP02EPZ (Analog Devices Inc.) — Instrumentation Amplifier, active status, higher performance metrics
- INA129PA (Texas Instruments) — Instrumentation Amplifier, active status, higher performance metrics
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | Input Bias (nA) | Input Offset (µV) | Supply Current (µA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Status |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MAX480EPA | Analog Devices Inc./Maxim | General Purpose | 0.012 | 1 | 25 | 14 | 5 | 1.6 | 36 | -40 to 85 | Obsolete |
| LT1012IN8#PBF | Analog Devices Inc. | General Purpose | 0.2 | 0.025 | 8 | 0.38 | — | 2.4 | 40 | -40 to 85 | Active |
| OP37EN8#PBF | Analog Devices Inc. | General Purpose | 17 | 10 | 10 | — | — | 8 | 36 | -25 to 85 | Active |
| OP37GN8#PBF | Linear Technology | General Purpose | 17 | 15 | 30 | — | — | 8 | 36 | -25 to 85 | Active |
| OP90GPZ | Analog Devices Inc. | General Purpose | 0.012 | 4 | 125 | 14 | 5 | 1.6 | 36 | -40 to 85 | Active |
| OPA241PA | Texas Instruments | General Purpose | 0.01 | 4 | 100 | 0.027 | 21 | 2.7 | 36 | -40 to 85 | Last Time Buy |
| AMP02EPZ | Analog Devices Inc. | Instrumentation | 6 | 2 | 20 | 5 | 32 | 9 | 36 | -40 to 85 | Active |
| INA129PA | Texas Instruments | Instrumentation | 4 | 2 | 25 | 0.7 | 15 | 4.5 | 36 | -40 to 85 | Active |
Engineering Selection Recommendations
Direct Replacement (Highest Compatibility):
The OP90GPZ provides the closest electrical match to the MAX480EPA, maintaining identical slew rate (0.012V/µs), supply current (14µA), output current (5mA), and supply voltage range (1.6V to 36V). This device is manufactured by Analog Devices Inc. and carries active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. The OP90GPZ is suitable for applications requiring minimal performance deviation from the original specification.
Active General Purpose Alternatives:
The LT1012IN8#PBF offers superior input bias current performance (0.025 nA versus 1 nA) and lower input offset voltage (8µV versus 25µV), with extended supply voltage range (2.4V to 40V). This device maintains active product status and is widely available. The LT1012IN8#PBF is appropriate for precision applications where improved DC accuracy is beneficial.
The OP37EN8#PBF and OP37GN8#PBF provide significantly higher slew rate (17V/µs) and gain-bandwidth product (63 MHz), suitable for applications requiring faster transient response. These devices require minimum 8V supply voltage and operate to -25°C minimum temperature. Selection of these parts requires verification that the application can tolerate higher slew rate and does not require operation below -25°C.
Rail-to-Rail Output Option:
The OPA241PA (Texas Instruments) offers rail-to-rail output capability with ultra-low slew rate (0.01V/µs) and extremely low supply current (0.027µA). This device carries last-time-buy status, indicating limited future availability. The OPA241PA is suitable for battery-powered and low-power applications requiring rail-to-rail output swing.
Instrumentation Amplifier Alternatives:
The AMP02EPZ and INA129PA are instrumentation amplifiers with enhanced performance characteristics including higher slew rate and output current capability. These devices are appropriate only if the application circuit topology can accommodate instrumentation amplifier architecture. Both devices maintain active product status with full compliance certifications.
Frequently Asked Questions (FAQ)
Q: Can the OP90GPZ be used as a direct replacement for the MAX480EPA?
A: Yes. The OP90GPZ maintains identical slew rate (0.012V/µs), supply current (14µA), output current (5mA), and supply voltage range (1.6V to 36V). Both devices are housed in 8-DIP through-hole packages and operate across -40°C to 85°C. The OP90GPZ carries active product status with RoHS3 compliance.
Q: What is the primary difference between general purpose and instrumentation amplifier substitutes?
A: General purpose amplifiers (LT1012IN8#PBF, OP37EN8#PBF, OP37GN8#PBF, OP90GPZ, OPA241PA) are single-stage devices suitable for buffering, summing, and integrating applications. Instrumentation amplifiers (AMP02EPZ, INA129PA) are three-stage devices with integrated gain-setting resistors, designed for precision signal conditioning and differential measurement. Instrumentation amplifiers require different circuit topology and are not pin-compatible with general purpose amplifiers.
Q: Why do OP37EN8#PBF and OP37GN8#PBF require minimum 8V supply voltage?
A: These devices are optimized for higher-speed applications and require higher minimum supply voltage to maintain specified performance. Applications designed for the MAX480EPA operating at 1.6V minimum supply cannot use OP37 devices without circuit redesign.
Q: Is the OPA241PA suitable for new designs?
A: The OPA241PA carries last-time-buy status, indicating that Texas Instruments has announced end-of-life. This device is appropriate for sustaining production of existing designs but not recommended for new product development. The OP90GPZ or LT1012IN8#PBF are preferred for new designs requiring long-term availability.
Q: What is the significance of the -25°C minimum operating temperature for OP37 devices?
A: The MAX480EPA and most substitute parts operate to -40°C minimum. The OP37EN8#PBF and OP37GN8#PBF operate only to -25°C minimum. Applications requiring operation below -25°C cannot use OP37 devices. Verify application temperature requirements before selection.
Q: Can instrumentation amplifiers (AMP02EPZ, INA129PA) be used in circuits designed for general purpose amplifiers?
A: No. Instrumentation amplifiers have different pin configurations, internal architecture, and gain-setting requirements. Direct substitution is not possible. Circuit redesign is required to accommodate instrumentation amplifier topology.
Q: What does RoHS3 compliance indicate?
A: RoHS3 compliance indicates the device meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All recommended substitutes carry RoHS3 compliance, ensuring environmental and regulatory compatibility.
Q: How does input bias current affect circuit performance?
A: Input bias current flows into the amplifier input terminals and can cause offset voltage errors in high-impedance circuits. The MAX480EPA specifies 1 nA input bias current. The LT1012IN8#PBF offers superior 0.025 nA performance, while OP37 devices specify 10-15 nA. For circuits with impedances exceeding 1 MΩ, lower input bias current reduces DC offset errors.
Q: Are all substitute parts available in the same packaging?
A: Yes. All recommended substitute parts are housed in 8-DIP (0.300", 7.62mm) through-hole packages, ensuring mechanical compatibility with existing printed circuit board layouts. Packaging variants (tube, bulk) do not affect electrical performance or pin configuration.
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