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MAX4490AXK-T Equivalent & Substitute Parts
Part Overview
The MAX4490AXK-T is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, housed in a 5-TSSOP (SC-70-5) surface-mount package. This device features rail-to-rail output capability and is designed for low-power analog signal conditioning applications. The MAX4490AXK-T is classified as obsolete product status, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility across packaging, electrical performance parameters, and thermal operating range.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 1 | — |
| Output Type | Rail-to-Rail | — |
| Slew Rate | 10 | V/µs |
| Gain Bandwidth Product | 10 | MHz |
| Current - Input Bias | 50 | pA |
| Voltage - Input Offset | 1.5 | mV |
| Current - Supply | 800 | µA |
| Current - Output / Channel | 50 | mA |
| Voltage - Supply Span (Min) | 2.7 | V |
| Voltage - Supply Span (Max) | 5.5 | V |
| Operating Temperature | -40 to 125 | °C |
| Package / Case | 5-TSSOP, SC-70-5, SOT-353 | — |
| Mounting Type | Surface Mount | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX4490AXK-T is determined by the following critical parameters:
Package Compatibility: All substitute parts must use the 5-TSSOP (SC-70-5, SOT-353) surface-mount package to ensure PCB footprint compatibility.
Electrical Performance Envelope: Substitute parts must operate within the supply voltage range of 2.7 V to 5.5 V and maintain the operating temperature range of -40°C to 125°C. Rail-to-rail output capability is required for functional equivalence.
Circuit Configuration: Single-circuit general-purpose amplifier topology is mandatory.
Compliance Status: Active product status is preferred for long-term availability. RoHS3 compliance is required for new designs and production environments subject to regulatory requirements.
Substitute parts are grouped into two categories based on amplifier type: general-purpose amplifiers (OPA313 series) and zero-drift amplifiers (OPA317 series). Both categories meet the core package and supply voltage requirements but exhibit different electrical performance characteristics within the allowed parameter ranges.
Parameter Comparison
| Parameter | MAX4490AXK-T | MAX4490AXK+T | OPA313IDCKR | OPA313IDCKT | OPA317IDCKR | OPA317IDCKT |
|---|---|---|---|---|---|---|
| Manufacturer | Analog Devices / Maxim | Analog Devices / Maxim | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Obsolete | Active | Active | Active | Active | Active |
| Amplifier Type | General Purpose | General Purpose | General Purpose | General Purpose | Zero-Drift | Zero-Drift |
| Number of Circuits | 1 | 1 | 1 | 1 | 1 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Slew Rate (V/µs) | 10 | 10 | 0.5 | 0.5 | 0.15 | 0.15 |
| Gain Bandwidth Product (MHz) | 10 | 10 | 1 | 1 | 0.3 | 0.3 |
| Current - Input Bias (pA) | 50 | 50 | 0.2 | 0.2 | 275 | 275 |
| Voltage - Input Offset (mV) | 1.5 | 1.5 | 0.5 | 0.5 | 0.02 | 0.02 |
| Current - Supply (µA) | 800 | 800 | 50 | 50 | 21 | 21 |
| Current - Output / Channel (mA) | 50 | 50 | 50 | 50 | 50 | 50 |
| Voltage - Supply Span (Min) (V) | 2.7 | 2.7 | 1.8 | 1.8 | 1.8 | 1.8 |
| Voltage - Supply Span (Max) (V) | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| Operating Temperature (°C) | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
| Package / Case | 5-TSSOP, SC-70-5, SOT-353 | 5-TSSOP, SC-70-5, SOT-353 | 5-TSSOP, SC-70-5, SOT-353 | 5-TSSOP, SC-70-5, SOT-353 | 5-TSSOP, SC-70-5, SOT-353 | 5-TSSOP, SC-70-5, SOT-353 |
| RoHS Status | Non-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) |
Engineering Selection Recommendations
Direct Replacement (Same Manufacturer): MAX4490AXK+T is the active equivalent of MAX4490AXK-T from Analog Devices Inc./Maxim Integrated. Both parts share identical electrical specifications and package configuration. MAX4490AXK+T carries ROHS3 compliance status, making it suitable for regulated production environments. This part is recommended as the primary replacement for obsolete MAX4490AXK-T inventory.
General-Purpose Amplifier Alternatives (Texas Instruments OPA313 Series): OPA313IDCKR and OPA313IDCKT are general-purpose amplifiers with reduced supply current (50 µA versus 800 µA) and improved input offset voltage (500 µV versus 1.5 mV). These parts operate within the extended minimum supply voltage range (1.8 V versus 2.7 V). Slew rate and gain bandwidth product are reduced (0.5 V/µs and 1 MHz respectively), which may impact high-frequency signal conditioning applications. Both parts are active and ROHS3 compliant. OPA313IDCKR is supplied in Cut Tape & Digi-Reel packaging; OPA313IDCKT is supplied in Tape & Reel packaging.
Zero-Drift Amplifier Alternatives (Texas Instruments OPA317 Series): OPA317IDCKR and OPA317IDCKT are zero-drift amplifiers with significantly reduced input offset voltage (20 µV versus 1.5 mV) and ultra-low supply current (21 µA). These parts are suitable for precision analog applications requiring minimal offset drift. Slew rate and gain bandwidth product are substantially reduced (0.15 V/µs and 300 kHz respectively), limiting applicability to low-frequency signal paths. Both parts are active and ROHS3 compliant. OPA317IDCKR is supplied in Cut Tape & Digi-Reel packaging; OPA317IDCKT is supplied in Tape & Reel packaging.
Compliance Considerations: All substitute parts carry ROHS3 compliance and REACH unaffected status. The original MAX4490AXK-T is RoHS non-compliant; substitution with compliant alternatives is required for new designs subject to regulatory requirements.
Frequently Asked Questions (FAQ)
Q: Can MAX4490AXK+T be used as a direct replacement for MAX4490AXK-T?
A: Yes. MAX4490AXK+T is the active equivalent manufactured by the same company (Analog Devices Inc./Maxim Integrated) with identical electrical specifications, package configuration, and operating temperature range. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 compliant versus non-compliant).
Q: What are the key differences between OPA313 and OPA317 series substitutes?
A: OPA313 is a general-purpose amplifier with 1 MHz gain bandwidth product and 0.5 V/µs slew rate. OPA317 is a zero-drift amplifier with 300 kHz gain bandwidth product and 0.15 V/µs slew rate. OPA317 offers superior input offset voltage (20 µV) and lower supply current (21 µA) compared to OPA313 (500 µV and 50 µA respectively). Selection depends on application requirements for bandwidth, slew rate, and offset voltage performance.
Q: Are all substitute parts pin-compatible with MAX4490AXK-T?
A: All substitute parts use the 5-TSSOP (SC-70-5, SOT-353) package, ensuring identical PCB footprint and pin count. Pin-level functional compatibility must be verified against specific application schematics, as different amplifier types may have different performance characteristics affecting circuit behavior.
Q: What packaging options are available for substitute parts?
A: MAX4490AXK+T is supplied in Cut Tape (CT) & Digi-Reel packaging. OPA313IDCKR and OPA317IDCKR are supplied in Cut Tape (CT) & Digi-Reel packaging. OPA313IDCKT and OPA317IDCKT are supplied in Tape & Reel (TR) packaging. Selection depends on production volume and assembly equipment compatibility.
Q: Are all substitute parts suitable for the full operating temperature range of -40°C to 125°C?
A: Yes. All substitute parts are rated for -40°C to 125°C operating temperature range, matching the original MAX4490AXK-T specification.
Q: What is the impact of reduced slew rate in OPA313 and OPA317 alternatives?
A: Reduced slew rate limits the maximum rate of output voltage change. OPA313 (0.5 V/µs) and OPA317 (0.15 V/µs) are suitable for low-frequency and precision DC applications. Applications requiring high-speed signal conditioning or fast transient response should retain MAX4490AXK+T (10 V/µs) or evaluate alternative high-speed amplifier families.
Q: Are all substitute parts RoHS compliant?
A: Yes. All substitute parts (MAX4490AXK+T, OPA313IDCKR, OPA313IDCKT, OPA317IDCKR, OPA317IDCKT) are ROHS3 compliant. The original MAX4490AXK-T is RoHS non-compliant.
Q: What is the minimum supply voltage for each substitute part?
A: MAX4490AXK-T and MAX4490AXK+T require minimum 2.7 V supply voltage. OPA313IDCKR, OPA313IDCKT, OPA317IDCKR, and OPA317IDCKT operate at reduced minimum supply voltage of 1.8 V, enabling operation in lower-voltage applications.
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