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OP282GS Equivalent & Substitute Parts
Part Overview
The OP282GS is a J-FET input operational amplifier manufactured by Analog Devices Inc., configured as a dual-channel (2 circuit) device in an 8-SOIC surface mount package. This component is classified as obsolete, indicating that direct procurement from original manufacturing channels may be limited. The OP282GS operates across a wide supply voltage range of 9V to 36V with a slew rate of 9V/µs and gain bandwidth product of 4 MHz, making it suitable for precision analog signal conditioning applications requiring low input bias current (3 pA) and low input offset voltage (200 µV).
Due to its obsolete status, identifying functionally equivalent and compatible substitute parts is essential for design continuity, system maintenance, and production support. Substitute parts must maintain compatibility across electrical performance parameters, package form factor, and thermal operating range to ensure direct replacement capability.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | J-FET | — |
| Number of Circuits | 2 | — |
| Slew Rate | 9 | V/µs |
| Gain Bandwidth Product | 4 | MHz |
| Current - Input Bias | 3 | pA |
| Voltage - Input Offset | 200 | µV |
| Current - Supply (x2 Channels) | 210 | µA |
| Current - Output / Channel | 10 | mA |
| Voltage - Supply Span (Min) | 9 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature Range | -40 to 85 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the OP282GS are classified into two categories based on substitution compatibility:
Direct Substitutes (Identical Electrical and Mechanical Parameters): Parts that maintain all critical electrical specifications including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current, and supply voltage range, while preserving the 8-SOIC package form factor and operating temperature range. These parts are interchangeable without circuit modification.
Functional Equivalents (Compatible Electrical Performance with Parameter Variations): Parts that maintain J-FET amplifier topology and dual-channel configuration in 8-SOIC packaging but exhibit variations in one or more electrical parameters such as slew rate, gain bandwidth product, input bias current, input offset voltage, or supply current. These parts are suitable for applications where the parameter variations remain within system tolerance requirements.
Critical Substitution Parameters: The following parameters determine substitution validity: amplifier type (J-FET), number of circuits (2), package form factor (8-SOIC), mounting type (surface mount), and operating temperature range compatibility. Supply voltage range overlap and output current capability must also be verified for the target application.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Slew Rate (V/µs) | GBW (MHz) | Input Bias (pA) | Input Offset (µV) | Supply Current (µA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OP282GS | Analog Devices Inc. | Obsolete | 9 | 4 | 3 | 200 | 210 | 10 | 9 | 36 | -40 to 85 | 8-SOIC |
| OP282GSZ | Analog Devices Inc. | Active | 9 | 4 | 3 | 200 | 210 | 10 | 9 | 36 | -40 to 85 | 8-SOIC |
| LT1057IS8#PBF | Analog Devices Inc. | Active | 13 | 5 | 7 | 220 | 1700 | — | 20 | 36 | -40 to 85 | 8-SOIC |
| LT1057IS8#TRPBF | Analog Devices Inc. | Active | 13 | 5 | 7 | 220 | 1700 | — | 20 | 36 | -40 to 85 | 8-SOIC |
| LT1057S8#PBF | Analog Devices Inc. | Active | 13 | 5 | 7 | 220 | 1700 | — | 20 | 36 | 0 to 70 | 8-SOIC |
| LT1057S8#TRPBF | Analog Devices Inc. | Active | 13 | 5 | 7 | 220 | 1700 | — | 20 | 36 | 0 to 70 | 8-SOIC |
| LT1113CS8#PBF | Analog Devices Inc. | Active | 3.9 | 5.6 | 300 | 550 | 5300 | — | 9 | 40 | -40 to 85 | 8-SOIC |
| LT1113CS8#TRPBF | Analog Devices Inc. | Active | 3.9 | 5.6 | 300 | 550 | 5300 | — | 9 | 40 | -40 to 85 | 8-SOIC |
| LT1169CS8#PBF | Analog Devices Inc. | Active | 4.2 | 5.3 | 4 | 600 | 5300 | — | 9 | 40 | 0 to 70 | 8-SOIC |
| LT1169CS8#TRPBF | Analog Devices Inc. | Active | 4.2 | 5.3 | 4 | 600 | 5300 | — | 9 | 40 | 0 to 70 | 8-SOIC |
| LF253DT | STMicroelectronics | Active | 16 | 4 | 20 | 3000 | 1400 | 40 | 6 | 36 | -40 to 105 | 8-SOIC |
Engineering Selection Recommendations
Direct Replacement (No Circuit Modification Required):
The OP282GSZ is the primary direct substitute for the OP282GS. Both parts maintain identical electrical specifications across all measured parameters: 9V/µs slew rate, 4 MHz gain bandwidth product, 3 pA input bias current, 200 µV input offset voltage, 210 µA supply current, and 10 mA output current per channel. The OP282GSZ is manufactured by Analog Devices Inc. with active product status and ROHS3 compliance, ensuring long-term availability and regulatory conformance. The only distinction is packaging format: OP282GSZ is supplied in tube packaging, whereas the original OP282GS packaging format is not specified. Both occupy the 8-SOIC form factor and are suitable for direct PCB substitution.
Functional Equivalent Selection (Application-Dependent):
The LT1057 series (LT1057IS8#PBF, LT1057IS8#TRPBF, LT1057S8#PBF, LT1057S8#TRPBF) represents an active alternative from Analog Devices Inc. with enhanced performance characteristics. These parts exhibit higher slew rate (13V/µs versus 9V/µs) and increased gain bandwidth product (5 MHz versus 4 MHz), making them suitable for applications requiring faster signal response. However, the LT1057 series demonstrates higher supply current consumption (1.7 mA versus 210 µA per channel pair), which may impact power budget in battery-operated or low-power applications. The LT1057IS8 variants maintain the full -40°C to 85°C operating range, while LT1057S8 variants are limited to 0°C to 70°C. Minimum supply voltage requirement increases to 20V, restricting use in systems with lower supply rails.
The LT1113 series (LT1113CS8#PBF, LT1113CS8#TRPBF) and LT1169 series (LT1169CS8#PBF, LT1169CS8#TRPBF) offer alternative performance profiles with lower slew rates (3.9V/µs to 4.2V/µs) and higher supply current consumption (5.3 mA per channel pair). These parts are suitable for applications where lower slew rate is acceptable and where the extended supply voltage range (up to 40V) provides system flexibility. The LT1169 series maintains the lowest input bias current (4 pA) among functional equivalents.
The LF253DT from STMicroelectronics provides a cross-manufacturer alternative with the highest slew rate (16V/µs) and output current capability (40 mA per channel). This part extends the operating temperature range to 105°C and reduces minimum supply voltage to 6V. However, input offset voltage is significantly higher (3 mV versus 200 µV), which may be unsuitable for precision applications requiring low offset specifications.
Compliance and Availability Considerations:
All recommended substitute parts carry ROHS3 compliance and REACH unaffected status, ensuring regulatory conformance for current manufacturing standards. Product status verification confirms active manufacturing for all substitute options, supporting long-term supply chain reliability. Inventory levels vary across substitute parts, with LT1169CS8#TRPBF showing the highest stock availability (50,400 units), followed by LF253DT (72,138 units).
Frequently Asked Questions (FAQ)
Q: Can OP282GSZ be used as a direct replacement for OP282GS without any circuit modifications?
A: Yes. The OP282GSZ maintains identical electrical specifications across all critical parameters: slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current, and supply voltage range. Both parts use the 8-SOIC package form factor and operate across the same temperature range (-40°C to 85°C). The only difference is packaging format (tube versus unspecified original format). Direct PCB substitution is valid.
Q: What are the key differences between OP282GS and LT1057 series alternatives?
A: The LT1057 series offers improved slew rate (13V/µs versus 9V/µs) and higher gain bandwidth product (5 MHz versus 4 MHz), enabling faster signal response. However, supply current consumption increases significantly (1.7 mA versus 210 µA per channel pair), which impacts power dissipation and thermal management. The LT1057 series also requires a minimum supply voltage of 20V, compared to 9V for the OP282GS, restricting use in lower-voltage systems. Input bias current and input offset voltage specifications are slightly degraded (7 pA versus 3 pA, and 220 µV versus 200 µV respectively).
Q: Is the LF253DT from STMicroelectronics a suitable substitute?
A: The LF253DT is a functional equivalent suitable for applications where higher slew rate (16V/µs) and output current capability (40 mA per channel) are beneficial. The part operates across an extended temperature range (-40°C to 105°C) and accepts lower minimum supply voltage (6V). However, input offset voltage is significantly higher (3 mV versus 200 µV), making it unsuitable for precision analog applications requiring low offset specifications. Cross-manufacturer substitution requires verification of circuit performance under actual operating conditions.
Q: What packaging options are available for substitute parts?
A: All substitute parts maintain the 8-SOIC surface mount package form factor with 0.154" (3.90mm) width, ensuring PCB footprint compatibility. Packaging format variations include tube (standard reel packaging) and tape & reel (TR) formats for automated assembly. The OP282GSZ is available in tube format. LT1057 and LT1113 series parts are available in both tube and tape & reel formats. LF253DT is supplied in cut tape (CT) and Digi-Reel format. Selection of packaging format depends on assembly process requirements and inventory management preferences.
Q: Which substitute part offers the lowest power consumption?
A: The OP282GSZ maintains the lowest supply current consumption at 210 µA per channel pair, identical to the original OP282GS. Among functional equivalents, the LT1057 series offers the next lowest consumption at 1.7 mA per channel pair, followed by LF253DT at 1.4 mA per channel pair. The LT1113 and LT1169 series consume the highest current at 5.3 mA per channel pair. For power-sensitive applications, OP282GSZ is the optimal choice.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All recommended substitute parts carry ROHS3 compliance certification. The OP282GSZ, LT1057 series, LT1113 series, LT1169 series, and LF253DT all meet ROHS3 requirements. Additionally, all parts are REACH unaffected, confirming compliance with current environmental and regulatory standards.
Q: What is the operating temperature range limitation for LT1057S8 and LT1169CS8 variants?
A: The LT1057S8#PBF, LT1057S8#TRPBF, LT1169CS8#PBF, and LT1169CS8#TRPBF variants are rated for 0°C to 70°C operating temperature, which is narrower than the original OP282GS range of -40°C to 85°C. These variants are unsuitable for applications requiring full -40°C to 85°C operation. The LT1057IS8 and LT1113 series variants maintain the full -40°C to 85°C range and are preferred for wide-temperature applications.
Q: Can substitute parts with higher supply voltage ratings (40V maximum) be used in 36V systems?
A: Yes. Parts with higher maximum supply voltage ratings (such as LT1113 and LT1169 series rated to 40V) are fully compatible with systems designed for 36V maximum supply. The higher rating provides additional design margin and flexibility for future system modifications. However, minimum supply voltage requirements must still be verified; for example, LT1057 series requires minimum 20V supply, which may exceed some system requirements.
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