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OP484FS-REEL7 Equivalent & Substitute Parts
Part Overview
The OP484FS-REEL7 is a general-purpose operational amplifier integrated circuit manufactured by Analog Devices Inc., configured as a 4-circuit rail-to-rail amplifier in a 14-SOIC surface mount package. This device is classified as obsolete product status, which necessitates identification of equivalent and substitute components for ongoing design support and procurement continuity. The OP484FS-REEL7 operates across a wide supply voltage range of 3V to 36V with an operating temperature range of -40°C to 125°C, making it suitable for industrial and commercial applications requiring general-purpose amplification.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 4 | — |
| Output Type | Rail-to-Rail | — |
| Slew Rate | 4 | V/µs |
| Gain Bandwidth Product | 4.25 | MHz |
| Current - Input Bias | 80 | nA |
| Voltage - Input Offset | 250 | µV |
| Current - Output / Channel | 10 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | -40 to 125 | °C |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| Product Status | Obsolete | — |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | — |
Substitute Part Grouping Explanation
Substitute parts for the OP484FS-REEL7 are classified into two categories based on electrical and mechanical compatibility:
Direct Substitutes (Identical Electrical and Package Specifications): Direct substitutes maintain the same electrical performance parameters and package form factor. These parts are interchangeable at the circuit board level without design modification. The primary criterion for direct substitution is matching the 14-SOIC package, rail-to-rail output configuration, 4-circuit topology, and core electrical specifications including slew rate, gain bandwidth product, input bias current, and supply voltage range.
Similar Substitutes (Compatible Electrical Performance with Package or Parameter Variations): Similar substitutes provide equivalent functional performance but may differ in specific parameters such as slew rate, gain bandwidth product, input bias current, output current capability, or package form factor. These substitutes require engineering evaluation to confirm suitability within the target application circuit. Compatibility is determined by the application's tolerance to variations in bandwidth, slew rate, input offset voltage, and output drive capability.
Key Parameters Determining Substitution:
- Number of circuits: 4 (mandatory)
- Output type: Rail-to-Rail (mandatory)
- Amplifier type: General Purpose (mandatory)
- Supply voltage range overlap: Minimum 3V to 36V compatibility
- Operating temperature range: Application-dependent
- Package compatibility: 14-SOIC or equivalent footprint
- Mounting type: Surface Mount (mandatory)
Parameter Comparison
| Parameter | OP484FS-REEL7 | OP484FSZ-REEL7 | ADA4084-4ARUZ-RL | LT1496HS#PBF | LT1496IS#PBF | OPA4171AQDRQ1 |
|---|---|---|---|---|---|---|
| Manufacturer | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Slew Rate (V/µs) | 4 | 4 | 4.6 | 0.001 | 0.001 | 1.5 |
| Gain Bandwidth Product (MHz) | 4.25 | 4.25 | 15.9 | 0.0027 | 0.0027 | 3 |
| Current - Input Bias (nA) | 80 | 80 | 140 | 0.25 | 0.25 | 0.008 |
| Voltage - Input Offset (µV) | 250 | 250 | 60 | 200 | 200 | 250 |
| Current - Output / Channel (mA) | 10 | 10 | 30 | 1.5 | 1.5 | 35 |
| Voltage - Supply Span Min (V) | 3 | 3 | 3 | 2.2 | 2.2 | 4.5 |
| Voltage - Supply Span Max (V) | 36 | 36 | 30 | 36 | 36 | 36 |
| Operating Temperature (°C) | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 85 | -40 to 125 |
| Package / Case | 14-SOIC | 14-SOIC | 14-TSSOP | 14-SOIC | 14-SOIC | 14-SOIC |
| Product Status | Obsolete | Active | Active | Active | Active | Active |
| RoHS Status | — | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 3 (168 Hours) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 3 (168 Hours) |
Engineering Selection Recommendations
Direct Substitute - OP484FSZ-REEL7: The OP484FSZ-REEL7 is the primary direct substitute for the OP484FS-REEL7. Both devices share identical electrical specifications, package configuration (14-SOIC), and operating parameters. The OP484FSZ-REEL7 maintains active product status with ROHS3 compliance and REACH unaffected certification. This part is recommended for direct replacement in existing designs without circuit modification. The packaging format differs (Cut Tape & Digi-Reel® versus standard reel), which may affect procurement and assembly processes but does not impact electrical performance.
Direct Substitute - LT1496HS#PBF and LT1496HS#TRPBF: The LT1496HS series provides direct electrical compatibility with identical slew rate (4V/µs), gain bandwidth product (4.25 MHz), and supply voltage range specifications. Both variants maintain the 14-SOIC package footprint and 4-circuit rail-to-rail configuration. The LT1496HS#PBF is supplied in tube packaging, while LT1496HS#TRPBF is supplied in tape and reel format. Both variants support the full operating temperature range (-40°C to 125°C) and carry active product status with ROHS3 compliance and MSL 1 rating, indicating superior moisture handling characteristics compared to the original part.
Similar Substitute - ADA4084-4ARUZ-RL: The ADA4084-4ARUZ-RL offers enhanced electrical performance with higher slew rate (4.6V/µs) and significantly improved gain bandwidth product (15.9 MHz). This device is packaged in 14-TSSOP format rather than 14-SOIC, requiring PCB layout modification. The maximum supply voltage is limited to 30V compared to 36V for the original part. The ADA4084-4ARUZ-RL is suitable for applications requiring higher bandwidth performance and is available in active product status with ROHS3 compliance and MSL 1 rating.
Similar Substitute - LT1496CS#PBF, LT1496CS#TRPBF, LT1496IS#PBF, and LT1496IS#TRPBF: The LT1496 series variants provide functional amplification with significantly reduced slew rate (0.001V/µs) and gain bandwidth product (2.7 kHz), making these devices suitable only for low-frequency applications. These parts feature extremely low input bias current (250 pA) and supply current (1µA per channel), advantageous for battery-powered or ultra-low-power designs. The LT1496CS series operates at 0°C to 70°C, while LT1496IS series operates at -40°C to 85°C. All LT1496 variants carry active product status with ROHS3 compliance and MSL 1 rating.
Similar Substitute - OPA4171AQDRQ1: The OPA4171AQDRQ1 is a Texas Instruments automotive-grade device with AEC-Q100 qualification. This part features extremely low input bias current (8 pA) and higher output current capability (35 mA per channel) compared to the original OP484FS-REEL7. The minimum supply voltage requirement is 4.5V, which may limit compatibility with 3V supply applications. The OPA4171AQDRQ1 is packaged in 14-SOIC format and maintains active product status with ROHS3 compliance and MSL 3 rating. This device is recommended for automotive applications requiring AEC-Q100 qualification.
Frequently Asked Questions (FAQ)
Q: Can OP484FSZ-REEL7 be used as a direct replacement for OP484FS-REEL7?
A: Yes. The OP484FSZ-REEL7 is a direct substitute with identical electrical specifications, package configuration, and performance characteristics. The only difference is packaging format (Cut Tape & Digi-Reel® versus standard reel). No circuit design changes are required.
Q: What is the primary reason to substitute the obsolete OP484FS-REEL7?
A: The OP484FS-REEL7 carries obsolete product status, indicating discontinued manufacturing and limited long-term availability. The OP484FSZ-REEL7 provides identical functionality with active product status and improved compliance certifications (ROHS3, REACH unaffected).
Q: Are the LT1496 series parts suitable replacements for high-frequency applications?
A: No. The LT1496 series exhibits significantly reduced bandwidth (2.7 kHz gain bandwidth product) and slew rate (0.001V/µs) compared to the OP484FS-REEL7 (4.25 MHz and 4V/µs respectively). These devices are suitable only for low-frequency or DC-coupled applications. For high-frequency requirements, the ADA4084-4ARUZ-RL or OPA4171AQDRQ1 are more appropriate.
Q: Does the ADA4084-4ARUZ-RL package change require PCB redesign?
A: Yes. The ADA4084-4ARUZ-RL uses 14-TSSOP packaging (0.173", 4.40mm width) compared to the 14-SOIC package (0.154", 3.90mm width) of the original part. PCB footprint modification is required. The pin configuration remains compatible, but physical layout changes are necessary.
Q: What is the maximum supply voltage for each substitute?
A: OP484FSZ-REEL7, LT1496 series, and OPA4171AQDRQ1 support 36V maximum. The ADA4084-4ARUZ-RL is limited to 30V maximum supply voltage. Applications requiring 30V to 36V operation must use OP484FSZ-REEL7, LT1496 series, or OPA4171AQDRQ1.
Q: Which substitute is recommended for automotive applications?
A: The OPA4171AQDRQ1 is the only substitute carrying automotive-grade qualification (AEC-Q100). This device is specifically designed for automotive environments and carries appropriate certifications for automotive deployment.
Q: What is the difference between LT1496CS and LT1496IS temperature grades?
A: The LT1496CS operates across 0°C to 70°C temperature range, while LT1496IS operates across -40°C to 85°C. For applications requiring full -40°C to 125°C operation, the LT1496HS variant (-40°C to 125°C) is required.
Q: How does moisture sensitivity level (MSL) affect component handling?
A: MSL 3 components (OP484FS-REEL7, OP484FSZ-REEL7, OPA4171AQDRQ1) require baking for 168 hours at specified temperature and humidity conditions before soldering. MSL 1 components (ADA4084-4ARUZ-RL, LT1496 series) have unlimited shelf life and do not require pre-soldering bake procedures, reducing manufacturing complexity.
Q: Can OPA4171AQDRQ1 be used in 3V supply applications?
A: No. The OPA4171AQDRQ1 requires minimum 4.5V supply voltage. Applications operating at 3V to 4.4V supply must use OP484FSZ-REEL7 or LT1496 series variants, which support 2.2V to 3V minimum supply voltage.
Q: What is the input bias current difference between substitutes?
A: Input bias current varies significantly: OP484FS-REEL7 (80 nA), ADA4084-4ARUZ-RL (140 nA), LT1496 series (250 pA), and OPA4171AQDRQ1 (8 pA). Applications sensitive to input bias current effects should select OPA4171AQDRQ1 or LT1496 series for superior performance.
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