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OPA134UAE4 Equivalent & Substitute Parts
Part Overview
The OPA134UAE4 is an audio amplifier integrated circuit manufactured by Texas Instruments, classified as a linear amplifier with a single circuit configuration in 8-SOIC surface mount packaging. This device is designated as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and production continuity. The OPA134UAE4 operates across a wide supply voltage range (5V to 36V) and is suitable for audio frequency applications requiring low input bias current and moderate slew rate performance.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | Audio | — |
| Number of Circuits | 1 | — |
| Slew Rate | 20 | V/µs |
| Gain Bandwidth Product | 8 | MHz |
| Current - Input Bias | 5 | pA |
| Voltage - Input Offset | 500 | µV |
| Current - Supply | 4 | mA |
| Current - Output / Channel | 35 | 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 OPA134UAE4 is determined by strict electrical and mechanical compatibility across the following criteria:
Primary Substitution Criteria:
- Package type: 8-SOIC surface mount configuration
- Slew rate: 20 V/µs minimum
- Gain bandwidth product: 8 MHz or greater
- Supply voltage range: Minimum 5V to maximum 36V overlap
- Input bias current: 5 pA to 25 pA range
- Output current per channel: 25 mA or greater
- Operating temperature range: Must encompass or exceed -40°C to 85°C
Substitute Categories:
Category 1: Direct Functional Equivalent (Active Status) OPA134UA represents the direct successor to OPA134UAE4, sharing identical electrical specifications and packaging. This part is in active production status with improved availability.
Category 2: J-FET Amplifier Alternatives (Analog Devices) AD711JRZ, AD711JRZ-REEL, AD711JRZ-REEL7, AD8510ARZ, AD8510ARZ-REEL, and AD8510ARZ-REEL7 are J-FET input operational amplifiers meeting the 8-SOIC package requirement and 20 V/µs slew rate specification. These devices maintain supply voltage compatibility within the 9V to 36V range and provide active product status with higher inventory availability.
Category 3: Extended Temperature Range Alternatives ADA4000-1ARZ, ADA4000-1ARZ-R7, and ADA4000-1ARZ-RL extend the operating temperature range to -40°C to 125°C while maintaining core electrical parameters and 8-SOIC packaging.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Slew Rate (V/µs) | GBW (MHz) | Input Bias (pA) | Input Offset (µV) | Supply Current (mA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package | Packaging Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OPA134UAE4 | Texas Instruments | Obsolete | 20 | 8 | 5 | 500 | 4 | 35 | 5 | 36 | -40 to 85 | 8-SOIC | — |
| OPA134UA | Texas Instruments | Active | 20 | 8 | 5 | 500 | 4 | 35 | 5 | 36 | -40 to 85 | 8-SOIC | Tube |
| AD711JRZ | Analog Devices Inc. | Active | 20 | 4 | 15 | 300 | 2.5 | 25 | 9 | 36 | 0 to 70 | 8-SOIC | Tube |
| AD711JRZ-REEL | Analog Devices Inc. | Active | 20 | 4 | 15 | 300 | 2.5 | 25 | 9 | 36 | 0 to 70 | 8-SOIC | Tape & Reel |
| AD711JRZ-REEL7 | Analog Devices Inc. | Active | 20 | 4 | 15 | 300 | 2.5 | 25 | 9 | 36 | 0 to 70 | 8-SOIC | Cut Tape & Digi-Reel |
| AD8510ARZ | Analog Devices Inc. | Active | 20 | 8 | 25 | 100 | 2.2 | 70 | 9 | 36 | -40 to 125 | 8-SOIC | Tube |
| AD8510ARZ-REEL | Analog Devices Inc. | Active | 20 | 8 | 25 | 100 | 2.2 | 70 | 9 | 36 | -40 to 125 | 8-SOIC | Cut Tape & Digi-Reel |
| AD8510ARZ-REEL7 | Analog Devices Inc. | Active | 20 | 8 | 25 | 100 | 2.2 | 70 | 9 | 36 | -40 to 125 | 8-SOIC | Cut Tape & Digi-Reel |
| ADA4000-1ARZ | Analog Devices Inc. | Active | 20 | 5 | 5 | 200 | 1.35 | 28 | 8 | 36 | -40 to 125 | 8-SOIC | Tube |
| ADA4000-1ARZ-R7 | Analog Devices Inc. | Active | 20 | 5 | 5 | 200 | 1.35 | 28 | 8 | 36 | -40 to 125 | 8-SOIC | Cut Tape & Digi-Reel |
| ADA4000-1ARZ-RL | Analog Devices Inc. | Active | 20 | 5 | 5 | 200 | 1.35 | 28 | 8 | 36 | -40 to 125 | 8-SOIC | Tape & Reel |
Engineering Selection Recommendations
Primary Recommendation: OPA134UA
OPA134UA is the direct functional equivalent of OPA134UAE4, manufactured by Texas Instruments in the same SoundPlus™ series. This part maintains identical electrical specifications and 8-SOIC packaging while offering active product status and superior availability (3400 units in stock versus 1900 for the obsolete OPA134UAE4). Both parts are ROHS3 compliant and REACH unaffected. Selection of OPA134UA eliminates any circuit redesign requirements and provides the shortest qualification timeline.
Secondary Recommendation: AD8510ARZ Series
The AD8510ARZ, AD8510ARZ-REEL, and AD8510ARZ-REEL7 variants provide enhanced performance characteristics while maintaining core compatibility. These J-FET amplifiers match the 8 MHz gain bandwidth product and 20 V/µs slew rate of the original part. The AD8510 series offers superior output current capability (70 mA versus 35 mA), lower input offset voltage (100 µV versus 500 µV), and extended operating temperature range (-40°C to 125°C). These devices are suitable for applications requiring improved thermal performance or higher output drive capability. All variants are ROHS3 compliant with unlimited moisture sensitivity rating.
Tertiary Recommendation: ADA4000-1ARZ Series
The ADA4000-1ARZ, ADA4000-1ARZ-R7, and ADA4000-1ARZ-RL variants provide the lowest supply current consumption (1.35 mA) among available substitutes while maintaining 20 V/µs slew rate and extended temperature range (-40°C to 125°C). These J-FET amplifiers are appropriate for power-constrained applications. The 5 MHz gain bandwidth product represents a reduction from the original 8 MHz specification and must be evaluated against circuit bandwidth requirements.
Packaging Considerations:
- Tube packaging (standard): OPA134UA, AD711JRZ, AD8510ARZ, ADA4000-1ARZ
- Cut Tape & Digi-Reel: AD711JRZ-REEL7, AD8510ARZ-REEL, AD8510ARZ-REEL7, ADA4000-1ARZ-R7
- Tape & Reel: AD711JRZ-REEL, ADA4000-1ARZ-RL
All substitute parts maintain ROHS3 compliance and EAR99 export classification consistent with the original OPA134UAE4.
Frequently Asked Questions (FAQ)
Q: Can OPA134UA be used as a direct replacement for OPA134UAE4 without circuit modification?
A: Yes. OPA134UA is the active production equivalent of OPA134UAE4, sharing identical electrical specifications, slew rate (20 V/µs), gain bandwidth product (8 MHz), supply voltage range (5V to 36V), and 8-SOIC packaging. No circuit redesign is required. The only difference is product status (active versus obsolete) and packaging format availability.
Q: What is the primary difference between AD711JRZ and AD8510ARZ?
A: Both are J-FET amplifiers in 8-SOIC packaging with 20 V/µs slew rate. The AD8510ARZ provides higher output current (70 mA versus 25 mA), lower input offset voltage (100 µV versus 300 µV), 8 MHz gain bandwidth product (versus 4 MHz for AD711), and extended temperature range (-40°C to 125°C versus 0°C to 70°C). The AD711JRZ operates at lower supply current (2.5 mA versus 2.2 mA) and requires minimum 9V supply. Selection depends on output drive requirements and temperature specifications.
Q: Are the different packaging variants (Tube, Tape & Reel, Cut Tape & Digi-Reel) electrically identical?
A: Yes. Packaging variants such as AD711JRZ (Tube), AD711JRZ-REEL (Tape & Reel), and AD711JRZ-REEL7 (Cut Tape & Digi-Reel) contain identical die and electrical specifications. Packaging format selection is determined by assembly process requirements and volume considerations. All variants maintain identical electrical performance and compliance certifications.
Q: What is the minimum supply voltage requirement for each substitute?
A: OPA134UA and OPA134UAE4 operate from 5V minimum. AD711JRZ, AD711JRZ-REEL, AD711JRZ-REEL7, AD8510ARZ, AD8510ARZ-REEL, and AD8510ARZ-REEL7 require 9V minimum supply. ADA4000-1ARZ, ADA4000-1ARZ-R7, and ADA4000-1ARZ-RL require 8V minimum supply. Circuit power supply design must accommodate these minimum voltage specifications.
Q: Which substitute provides the lowest power consumption?
A: ADA4000-1ARZ series devices consume 1.35 mA supply current, the lowest among all substitutes. OPA134UA and OPA134UAE4 consume 4 mA. AD711 series consumes 2.5 mA. AD8510 series consumes 2.2 mA. Selection for power-constrained applications should prioritize ADA4000-1ARZ variants.
Q: Can AD711JRZ be used in applications requiring 8 MHz gain bandwidth product?
A: No. AD711JRZ provides 4 MHz -3dB bandwidth, which is insufficient for applications requiring 8 MHz gain bandwidth product. Use AD8510ARZ series (8 MHz) or OPA134UA (8 MHz) for bandwidth-critical applications.
Q: What is the moisture sensitivity level difference between OPA134UA and AD8510ARZ?
A: OPA134UA has MSL 3 (168 hours), indicating moderate moisture sensitivity requiring controlled storage and handling. AD8510ARZ has MSL 1 (unlimited), indicating minimal moisture sensitivity with no special storage requirements. For high-volume manufacturing or extended storage periods, AD8510ARZ variants provide superior handling flexibility.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts (OPA134UA, AD711 series, AD8510 series, ADA4000 series) are ROHS3 compliant and REACH unaffected, matching the compliance status of OPA134UAE4.
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