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OPA132U Equivalent & Substitute Parts Reference
Part Overview
The OPA132U is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is classified as Active product status and is ROHS3 compliant. The OPA132U serves applications requiring low input bias current and moderate bandwidth performance in compact form factors. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, design optimization, or application-specific parameter requirements.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 1 | — |
| Slew Rate | 20 | V/µs |
| Gain Bandwidth Product | 8 | MHz |
| Current - Input Bias | 5 | pA |
| Voltage - Input Offset | 250 | µV |
| Current - Supply | 4 | mA |
| Current - Output / Channel | 40 | mA |
| Voltage - Supply Span (Min) | 5 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | -40 to 85 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 3 (168 Hours) | — |
Substitute Part Grouping Explanation
Substitution of the OPA132U is determined by strict alignment of the following electrical and mechanical parameters:
Primary Substitution Criteria:
- Package / Case: 8-SOIC (0.154", 3.90mm Width) — mechanical compatibility
- Mounting Type: Surface Mount — assembly process compatibility
- Number of Circuits: 1 — functional equivalence
- Voltage - Supply Span: Minimum 5V to Maximum 36V — power supply compatibility
- Operating Temperature: Support for -40°C to 85°C range — thermal envelope compatibility
- Slew Rate: 20V/µs or greater — transient response capability
- Gain Bandwidth Product: 8 MHz or greater — frequency response capability
Secondary Compatibility Parameters:
- Current - Input Bias: 5 pA or lower — input impedance characteristics
- Voltage - Input Offset: 250 µV or lower — DC accuracy
- Current - Supply: 4 mA or lower — power consumption
- Current - Output / Channel: 40 mA or greater — output drive capability
Substitute parts identified in this reference meet or exceed the OPA132U specifications across all primary criteria. Variations in amplifier type (J-FET versus General Purpose), MSL rating, and packaging format (Tube, Cut Tape, Tape & Reel) do not affect electrical substitution validity but may impact procurement and assembly workflows.
Parameter Comparison
| Parameter | OPA132U | AD711KRZ | AD8510BRZ | LT1055S8#PBF | LT1056S8#PBF | LT1793ACS8#PBF |
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | 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 |
| Number of Circuits | 1 | 1 | 1 | 1 | 1 | 1 |
| Slew Rate (V/µs) | 20 | 20 | 20 | 12 | 14 | 3.4 |
| Gain Bandwidth Product (MHz) | 8 | 4 | 8 | 4.5 | 5.5 | 4.2 |
| Current - Input Bias (pA) | 5 | 15 | 25 | 30 | 30 | 3 |
| Voltage - Input Offset (µV) | 250 | 200 | 80 | 500 | 500 | 250 |
| Current - Supply (mA) | 4 | 2.5 | 2.2 | 2.8 | 5 | 4.2 |
| Current - Output / Channel (mA) | 40 | 25 | 70 | — | — | — |
| Voltage - Supply Span Min (V) | 5 | 9 | 9 | 10 | 10 | 9 |
| Voltage - Supply Span Max (V) | 36 | 36 | 36 | 36 | 36 | 40 |
| Operating Temperature (°C) | -40 to 85 | 0 to 70 | -40 to 125 | 0 to 70 | 0 to 70 | 0 to 70 |
| Package / Case | 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 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
AD8510BRZ / AD8510BRZ-REEL7
The AD8510BRZ is the primary substitute for OPA132U applications requiring extended operating temperature range (-40°C to 125°C). This device matches the OPA132U in slew rate (20V/µs) and gain bandwidth product (8 MHz), providing direct functional equivalence. The AD8510BRZ delivers superior output current capability (70 mA versus 40 mA), lower input offset voltage (80 µV versus 250 µV), and reduced supply current (2.2 mA versus 4 mA). Both tube and reel packaging formats are available. ROHS3 compliance and MSL 1 rating ensure compatibility with standard assembly processes.
AD711KRZ / AD711KRZ-REEL7
The AD711KRZ serves applications where reduced power consumption is prioritized. Supply current of 2.5 mA and output current of 25 mA represent lower power operation compared to OPA132U. Slew rate matches at 20V/µs. Operating temperature range is restricted to 0°C to 70°C, limiting use in extended temperature applications. Input offset voltage (200 µV) is superior to OPA132U. Gain bandwidth product of 4 MHz is lower than OPA132U, affecting high-frequency performance. Available in tube and reel formats with ROHS3 compliance.
LT1055S8#PBF / LT1055S8#TRPBF
The LT1055S8 is suitable for applications with relaxed slew rate requirements (12V/µs). Gain bandwidth product of 4.5 MHz is lower than OPA132U. Input bias current of 30 pA and input offset voltage of 500 µV represent degraded DC characteristics. Minimum supply voltage of 10V restricts use in low-voltage applications. Operating temperature range of 0°C to 70°C limits thermal envelope. Available in tube and tape & reel formats with ROHS3 compliance and MSL 1 rating.
LT1056S8#PBF
The LT1056S8 provides intermediate performance between LT1055S8 and OPA132U. Slew rate of 14V/µs and gain bandwidth product of 5.5 MHz represent moderate performance. Supply current of 5 mA exceeds OPA132U. Input bias current and offset voltage match LT1055S8 specifications. Minimum supply voltage of 10V and operating temperature range of 0°C to 70°C apply the same restrictions as LT1055S8. Available in tube packaging with ROHS3 compliance and MSL 1 rating.
LT1793ACS8#PBF
The LT1793ACS8 is optimized for ultra-low input bias current applications (3 pA). Input offset voltage matches OPA132U at 250 µV. Slew rate of 3.4V/µs is significantly lower, restricting transient response capability. Gain bandwidth product of 4.2 MHz is lower than OPA132U. Maximum supply voltage of 40V exceeds OPA132U capability. Operating temperature range of 0°C to 70°C limits thermal envelope. Available in tube packaging with ROHS3 compliance and MSL 1 rating.
Frequently Asked Questions (FAQ)
Q: Can AD711KRZ replace OPA132U in all applications?
A: AD711KRZ is mechanically and electrically compatible for applications operating within 0°C to 70°C temperature range and where gain bandwidth product of 4 MHz is sufficient. Applications requiring extended temperature operation (-40°C to 85°C) or higher bandwidth (8 MHz) require alternative substitutes such as AD8510BRZ.
Q: What is the primary difference between AD8510BRZ and AD711KRZ?
A: AD8510BRZ supports extended operating temperature range (-40°C to 125°C) and matches OPA132U slew rate and bandwidth specifications. AD711KRZ operates within 0°C to 70°C and provides lower power consumption (2.5 mA versus 2.2 mA) but reduced output current capability (25 mA versus 70 mA).
Q: Are packaging format differences (Tube, Cut Tape, Tape & Reel) significant for substitution?
A: Packaging format affects procurement and assembly workflow but does not alter electrical substitution validity. Tube packaging suits manual assembly and small-volume applications. Cut Tape and Tape & Reel formats support automated pick-and-place assembly. Selection depends on production volume and assembly equipment capability.
Q: Why does LT1793ACS8#PBF have lower slew rate than OPA132U?
A: LT1793ACS8 is optimized for ultra-low input bias current (3 pA) through J-FET input architecture, which inherently results in lower slew rate (3.4V/µs). This trade-off is acceptable for applications prioritizing input impedance over transient response speed.
Q: Can OPA132U operate at 10V minimum supply voltage?
A: OPA132U minimum supply voltage is 5V. Substitute parts AD711KRZ, AD8510BRZ, and LT1793ACS8 require minimum 9V supply. LT1055S8 and LT1056S8 require minimum 10V supply. Verify supply voltage compatibility before substitution.
Q: What is MSL rating and why does it differ between OPA132U and substitutes?
A: Moisture Sensitivity Level (MSL) indicates component sensitivity to moisture absorption during storage. OPA132U has MSL 3 (168 hours), while all substitute parts have MSL 1 (unlimited). Lower MSL rating provides greater storage flexibility and reduced risk of moisture-induced failures during assembly.
Q: Is AD8510BRZ recommended for all OPA132U applications?
A: AD8510BRZ is recommended as the primary substitute due to matching slew rate (20V/µs), gain bandwidth product (8 MHz), and extended operating temperature range (-40°C to 125°C). Superior output current (70 mA) and lower input offset voltage (80 µV) provide performance enhancement. Verify application-specific requirements before final selection.
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