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OPA2172IDR Equivalent & Substitute Parts
Part Overview
The OPA2172IDR is a general-purpose operational amplifier manufactured by Texas Instruments, featuring dual circuits in an 8-SOIC surface-mount package. This device is classified as Active product status and is RoHS3 compliant. The OPA2172IDR is utilized in applications requiring rail-to-rail output capability with moderate slew rate and bandwidth characteristics. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design optimization within specified parameter ranges.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | |
| Number of Circuits | 2 | |
| Output Type | Rail-to-Rail | |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | |
| Mounting Type | Surface Mount | |
| Slew Rate | 10 | V/µs |
| Gain Bandwidth Product | 10 | MHz |
| Voltage - Supply Span (Min) | 4.5 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | -40 to 125 | °C |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitute parts for the OPA2172IDR are categorized based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:
Mechanical Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface-mount package to ensure PCB footprint compatibility.
Functional Compatibility: All substitute parts must provide dual-circuit (2 circuits) rail-to-rail output operational amplifier functionality.
Electrical Operating Range: Substitute parts must support the voltage supply span range of 4.5 V minimum to 36 V maximum to ensure operation within the OPA2172IDR's specified supply envelope.
Temperature Range: Substitute parts must support the operating temperature range of -40°C to 125°C or a subset thereof that includes the OPA2172IDR's minimum and maximum operating points.
Compliance Status: All substitute parts must maintain RoHS3 compliance and Active product status.
Substitute parts are grouped into two categories:
Category 1 - General Purpose Amplifiers: Parts with general-purpose amplifier classification, including LT1498 series variants. These devices share the same amplifier type classification as the OPA2172IDR.
Category 2 - J-FET Amplifiers: Parts with J-FET amplifier classification, including AD823 and ADA4610/ADA4622 series. These devices provide alternative input stage technology while maintaining dual-circuit, rail-to-rail, 8-SOIC package compatibility.
Parameter Comparison
| Parameter | OPA2172IDR | AD823ARZ | AD823ARZ-R7 | AD823ARZ-RL | ADA4610-2ARZ-R7 | ADA4622-2ARZ | ADA4622-2ARZ-R7 | LT1498CS8#PBF | LT1498CS8#TRPBF | LT1498HS8#PBF | LT1498IS8#PBF |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Amplifier Type | General Purpose | J-FET | J-FET | J-FET | J-FET | J-FET | J-FET | General Purpose | General Purpose | General Purpose | General Purpose |
| Number of Circuits | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Package / Case | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Slew Rate (V/µs) | 10 | 25 | 25 | 25 | 61 | 23 | 23 | 6 | 6 | 6 | 6 |
| Gain Bandwidth Product (MHz) | 10 | 16.3 | 8 | 8 | 10.5 | 10.5 | 10.5 | 10.5 | |||
| Current - Input Bias (pA) | 8 | 5 | 5 | 5 | 5 | 2 | 2 | 250 nA | 250 nA | 250 nA | 250 nA |
| Voltage - Input Offset (µV) | 200 | 700 | 700 | 700 | 400 | 40 | 40 | 200 | 200 | 200 | 200 |
| Current - Supply (mA) | 1.6 (x2) | 7 | 7 | 7 | 1.6 (x2) | 0.665 (x2) | 0.665 (x2) | 1.8 (x2) | 1.8 (x2) | 1.8 (x2) | 1.8 (x2) |
| Current - Output / Channel (mA) | 75 | 17 | 17 | 17 | 79 | 20 | 20 | 30 | 30 | 30 | 30 |
| Voltage - Supply Span Min (V) | 4.5 | 3 | 3 | 3 | 10 | 5 | 5 | 2.2 | 2.2 | 2.2 | 2.2 |
| Voltage - Supply Span Max (V) | 36 | 36 | 36 | 36 | 30 | 30 | 30 | 36 | 36 | 36 | 36 |
| Operating Temperature (°C) | -40 to 125 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 125 | -40 to 125 | -40 to 125 | 0 to 70 | 0 to 70 | -40 to 125 | -40 to 85 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
General Purpose Amplifier Substitutes (LT1498 Series)
The LT1498 series variants (LT1498CS8#PBF, LT1498CS8#TRPBF, LT1498HS8#PBF, LT1498IS8#PBF) maintain the same general-purpose amplifier classification as the OPA2172IDR. These parts are RoHS3 compliant and Active status. The LT1498HS8#PBF variant supports the full -40°C to 125°C operating temperature range matching the OPA2172IDR. The LT1498CS8#TRPBF variant is available in Cut Tape & Digi-Reel packaging, matching the OPA2172IDR's packaging format. All LT1498 variants support the 4.5 V to 36 V supply voltage range required by the OPA2172IDR.
J-FET Amplifier Substitutes (AD823 Series)
The AD823 series (AD823ARZ, AD823ARZ-R7, AD823ARZ-RL) provides J-FET input stage technology with dual circuits in 8-SOIC packages. These parts are RoHS3 compliant and Active status. The AD823ARZ-R7 and AD823ARZ-RL variants are available in Cut Tape & Digi-Reel packaging. All AD823 variants support the 3 V to 36 V supply voltage range, which encompasses the OPA2172IDR's 4.5 V minimum requirement. Operating temperature range for AD823 variants is -40°C to 85°C, which covers the OPA2172IDR's minimum temperature but does not extend to the maximum 125°C specification.
J-FET Amplifier Substitutes (ADA4610-2ARZ-R7)
The ADA4610-2ARZ-R7 is a J-FET amplifier with dual circuits in 8-SOIC package, available in Cut Tape & Digi-Reel packaging. This part is RoHS3 compliant and Active status. The ADA4610-2ARZ-R7 supports the full -40°C to 125°C operating temperature range matching the OPA2172IDR. Supply voltage range is 10 V to 30 V, which does not fully encompass the OPA2172IDR's 4.5 V minimum specification.
J-FET Amplifier Substitutes (ADA4622 Series)
The ADA4622 series (ADA4622-2ARZ, ADA4622-2ARZ-R7) provides J-FET input stage technology with dual circuits in 8-SOIC packages. These parts are RoHS3 compliant and Active status. The ADA4622-2ARZ-R7 variant is available in Cut Tape & Digi-Reel packaging. Both variants support the full -40°C to 125°C operating temperature range matching the OPA2172IDR. Supply voltage range is 5 V to 30 V, which does not fully encompass the OPA2172IDR's 4.5 V minimum specification.
Frequently Asked Questions (FAQ)
Q: Can the LT1498HS8#PBF directly replace the OPA2172IDR in all applications?
A: The LT1498HS8#PBF shares the same 8-SOIC package, dual-circuit configuration, rail-to-rail output, and supports the full -40°C to 125°C operating temperature range of the OPA2172IDR. Both parts support 4.5 V to 36 V supply voltage operation. However, the LT1498HS8#PBF has a lower slew rate (6 V/µs versus 10 V/µs) and different input bias current characteristics (250 nA versus 8 pA). Direct replacement is mechanically and electrically feasible within the specified parameter ranges, but circuit performance characteristics will differ.
Q: What is the key difference between general-purpose and J-FET amplifier substitutes?
A: General-purpose amplifiers (OPA2172IDR, LT1498 series) use bipolar input stages, while J-FET amplifiers (AD823, ADA4610, ADA4622 series) use field-effect transistor input stages. J-FET input stages provide lower input bias current (2-5 pA versus 8 pA or 250 nA) and higher input impedance. The choice between these technologies depends on application requirements for input bias current, input impedance, and slew rate performance.
Q: Which substitute parts maintain the exact operating temperature range of the OPA2172IDR?
A: The ADA4610-2ARZ-R7, ADA4622-2ARZ, and ADA4622-2ARZ-R7 all support the full -40°C to 125°C operating temperature range. The LT1498HS8#PBF also supports this range. The AD823 series variants support -40°C to 85°C, which does not extend to the OPA2172IDR's maximum 125°C specification.
Q: Are all substitute parts available in the same packaging format as the OPA2172IDR?
A: The OPA2172IDR is supplied in Cut Tape (CT) & Digi-Reel packaging. Substitute parts with matching packaging are: AD823ARZ-R7, AD823ARZ-RL, ADA4610-2ARZ-R7, ADA4622-2ARZ-R7, and LT1498CS8#TRPBF. Other variants are supplied in Tube packaging and require different handling and storage procedures.
Q: What supply voltage range is common to all substitute parts and the OPA2172IDR?
A: The OPA2172IDR operates from 4.5 V to 36 V. The LT1498 series and AD823 series support this range. The ADA4610-2ARZ-R7 operates from 10 V to 30 V, and the ADA4622 series operates from 5 V to 30 V. Only the LT1498 and AD823 series fully encompass the OPA2172IDR's 4.5 V minimum specification.
Q: Which substitute provides the highest slew rate?
A: The ADA4610-2ARZ-R7 provides the highest slew rate at 61 V/µs, compared to the OPA2172IDR's 10 V/µs. The AD823 series provides 25 V/µs, and the ADA4622 series provides 23 V/µs. The LT1498 series provides the lowest slew rate at 6 V/µs.
Q: Are all substitute parts RoHS3 compliant?
A: Yes, all listed substitute parts are RoHS3 compliant and maintain Active product status, matching the OPA2172IDR's compliance and status classification.
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