OPA2134UAE4 Equivalent & Substitute Parts

Part Overview

The OPA2134UAE4 is a dual-channel audio amplifier integrated circuit manufactured by Texas Instruments in the SoundPlus™ series. This device is classified as an audio operational amplifier with 2 circuits in an 8-SOIC surface mount package. The OPA2134UAE4 is currently listed as obsolete, which necessitates identification of functionally equivalent substitute components for ongoing design support and production continuity. Substitute parts must maintain compatibility with existing PCB layouts, supply voltage requirements, and audio performance specifications while offering active product status and improved availability.

Key Parameters

Parameter	OPA2134UAE4
Manufacturer	Texas Instruments
Category	Linear, Amplifiers
Amplifier Type	Audio
Number of Circuits	2
Package / Case	8-SOIC (0.154", 3.90mm Width)
Slew Rate	20V/µs
Gain Bandwidth Product	8 MHz
Current - Input Bias	5 pA
Voltage - Input Offset	500 µV
Current - Supply	4mA (x2 Channels)
Current - Output / Channel	35 mA
Voltage - Supply Span (Min)	5 V
Voltage - Supply Span (Max)	36 V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitute parts for the OPA2134UAE4 are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Mandatory Compatibility Criteria:

Package / Case: 8-SOIC (0.154", 3.90mm Width) — ensures PCB footprint compatibility
Number of Circuits: 2 — maintains dual-channel functionality
Mounting Type: Surface Mount — preserves assembly process compatibility
Voltage - Supply Span: Must encompass or exceed the 5V to 36V range of the original part
Operating Temperature: Must support -40°C ~ 85°C minimum range
RoHS3 Compliance: Required for regulatory alignment

Performance Parameters Determining Substitution:

Slew Rate: 20V/µs (original specification)
Gain Bandwidth Product: 8 MHz (original specification)
Current - Input Bias: 5 pA (original specification)
Current - Output / Channel: 35 mA (original specification)

Substitute parts are grouped into two categories:

Category 1: Direct Audio Amplifier Substitutes OPA2134UA represents the active production equivalent of OPA2134UAE4, maintaining identical electrical specifications and audio amplifier classification.

Category 2: J-FET and General Purpose Amplifier Alternatives AD8512ARZ, AD8512ARZ-REEL, AD8512ARZ-REEL7, ADA4000-2ARZ, ADA4000-2ARZ-R7, ADA4000-2ARZ-RL, ADA4075-2ARZ, ADA4075-2ARZ-R7, and ADA4075-2ARZ-RL offer alternative amplifier topologies (J-FET or general purpose) with comparable or superior electrical performance characteristics. These parts maintain the 8-SOIC package, dual-circuit configuration, and surface mount compatibility while offering active product status.

Parameter Comparison

Parameter	OPA2134UAE4	OPA2134UA	AD8512ARZ	AD8512ARZ-REEL	AD8512ARZ-REEL7	ADA4000-2ARZ	ADA4000-2ARZ-R7	ADA4000-2ARZ-RL	ADA4075-2ARZ	ADA4075-2ARZ-R7	ADA4075-2ARZ-RL
Manufacturer	Texas Instruments	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.
Amplifier Type	Audio	Audio	J-FET	J-FET	J-FET	J-FET	J-FET	J-FET	General Purpose	General Purpose	General Purpose
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Slew Rate	20V/µs	20V/µs	20V/µs	20V/µs	20V/µs	20V/µs	20V/µs	20V/µs	12V/µs	12V/µs	12V/µs
Gain Bandwidth Product	8 MHz	8 MHz	8 MHz	8 MHz	8 MHz	5 MHz	5 MHz	5 MHz	6.5 MHz	6.5 MHz	6.5 MHz
Current - Input Bias	5 pA	5 pA	25 pA	25 pA	25 pA	5 pA	5 pA	5 pA	30 nA	30 nA	30 nA
Voltage - Input Offset	500 µV	500 µV	100 µV	100 µV	100 µV	200 µV	200 µV	200 µV	200 µV	200 µV	200 µV
Current - Supply	4mA (x2)	4mA (x2)	2.2mA (x2)	2.2mA (x2)	2.2mA (x2)	1.35mA (x2)	1.35mA (x2)	1.35mA (x2)	1.8mA (x2)	1.8mA (x2)	1.8mA (x2)
Current - Output / Channel	35 mA	35 mA	70 mA	70 mA	70 mA	28 mA	28 mA	28 mA	40 mA	40 mA	40 mA
Voltage - Supply Span (Min)	5 V	5 V	10 V	10 V	10 V	8 V	8 V	8 V	9 V	9 V	9 V
Voltage - Supply Span (Max)	36 V	36 V	30 V	30 V	30 V	36 V	36 V	36 V	36 V	36 V	36 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	3 (168 Hours)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: OPA2134UA

The OPA2134UA is the direct active production equivalent of the obsolete OPA2134UAE4. This part maintains identical electrical specifications across all critical parameters: 20V/µs slew rate, 8 MHz gain bandwidth product, 5 pA input bias current, 500 µV input offset voltage, 35 mA output current per channel, and 5V to 36V supply voltage range. The OPA2134UA is ROHS3 compliant and carries active product status from Texas Instruments. The only difference is packaging format (Tube vs. the original's unspecified packaging), which does not affect electrical performance or PCB compatibility. This substitution requires no circuit redesign and maintains full backward compatibility.

Secondary Recommendations: AD8512ARZ Series (AD8512ARZ, AD8512ARZ-REEL, AD8512ARZ-REEL7)

The AD8512ARZ family from Analog Devices Inc. offers J-FET amplifier topology with identical 20V/µs slew rate and 8 MHz gain bandwidth product. These parts provide superior input offset voltage (100 µV vs. 500 µV) and lower supply current (2.2mA vs. 4mA per dual channels). However, the minimum supply voltage is 10V (vs. 5V for OPA2134UAE4), which may limit applicability in low-voltage designs. Output current per channel is 70 mA, exceeding the original 35 mA specification. All variants are ROHS3 compliant with active product status and MSL 1 rating. Packaging variants (Tube, Cut Tape & Digi-Reel®) accommodate different procurement and assembly workflows.

Tertiary Recommendations: ADA4000-2ARZ Series (ADA4000-2ARZ, ADA4000-2ARZ-R7, ADA4000-2ARZ-RL)

The ADA4000-2ARZ family provides J-FET amplifier topology with 20V/µs slew rate and 5 MHz gain bandwidth product. Input bias current matches the original at 5 pA. Supply voltage range is 8V to 36V, which accommodates most applications but excludes 5V-only designs. Supply current is significantly reduced to 1.35mA per dual channels. Output current per channel is 28 mA, slightly below the original 35 mA specification. All variants are ROHS3 compliant with active product status and MSL 1 rating. Packaging options (Tube, Cut Tape & Digi-Reel®) support various procurement requirements.

Quaternary Recommendations: ADA4075-2ARZ Series (ADA4075-2ARZ, ADA4075-2ARZ-R7, ADA4075-2ARZ-RL)

The ADA4075-2ARZ family represents general purpose amplifier topology with iPolar® series designation. Slew rate is reduced to 12V/µs and gain bandwidth product to 6.5 MHz, representing lower performance than the original specification. Input bias current is significantly higher at 30 nA. Supply voltage range is 9V to 36V. Supply current is 1.8mA per dual channels, and output current per channel is 40 mA. All variants are ROHS3 compliant with active product status and MSL 1 rating. This family is suitable for applications where reduced slew rate and bandwidth are acceptable trade-offs for improved input bias current characteristics.

Compliance and Regulatory Status

All recommended substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original OPA2134UAE4. Moisture sensitivity levels for Analog Devices alternatives (MSL 1, Unlimited) provide superior handling characteristics compared to the original part (MSL 3, 168 Hours), reducing production risk during storage and assembly.

Frequently Asked Questions (FAQ)

Q1: Can OPA2134UA be used as a direct replacement for OPA2134UAE4 without circuit modifications?

A: Yes. The OPA2134UA maintains identical electrical specifications and 8-SOIC package compatibility. No circuit redesign is required. The only difference is packaging format (Tube), which does not affect electrical performance or PCB footprint.

Q2: What is the primary difference between the OPA2134UA and AD8512ARZ substitutes?

A: OPA2134UA is an audio amplifier topology, while AD8512ARZ is a J-FET amplifier topology. Both maintain 20V/µs slew rate and 8 MHz gain bandwidth product. AD8512ARZ offers superior input offset voltage (100 µV vs. 500 µV) and lower supply current (2.2mA vs. 4mA). However, AD8512ARZ requires minimum 10V supply voltage, which may not be compatible with 5V-only designs.

Q3: Are all substitute parts compatible with the original 5V to 36V supply voltage range?

A: No. OPA2134UA maintains the full 5V to 36V range. AD8512ARZ series requires minimum 10V. ADA4000-2ARZ series requires minimum 8V. ADA4075-2ARZ series requires minimum 9V. Designs operating at 5V supply voltage must use OPA2134UA.

Q4: What is the significance of MSL (Moisture Sensitivity Level) differences?

A: The original OPA2134UAE4 has MSL 3 (168 Hours), requiring controlled storage and handling. All Analog Devices substitutes have MSL 1 (Unlimited), eliminating moisture sensitivity concerns and reducing production risk during storage, handling, and assembly.

Q5: Can ADA4075-2ARZ be used in audio applications requiring 20V/µs slew rate?

A: ADA4075-2ARZ has 12V/µs slew rate, which is lower than the original 20V/µs specification. This may limit performance in high-frequency audio applications. For audio applications requiring 20V/µs slew rate, use OPA2134UA or AD8512ARZ series.

Q6: What packaging options are available for substitute parts?

A: OPA2134UA is available in Tube packaging. AD8512ARZ is available in Tube and Cut Tape & Digi-Reel® variants. ADA4000-2ARZ is available in Tube and Cut Tape & Digi-Reel® variants. ADA4075-2ARZ is available in Tube and Tape & Reel (TR) variants. All maintain 8-SOIC package compatibility.

Q7: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts are ROHS3 compliant and REACH unaffected, maintaining regulatory alignment with the original OPA2134UAE4.

Q8: Which substitute offers the lowest supply current consumption?

A: ADA4000-2ARZ series offers the lowest supply current at 1.35mA per dual channels, compared to 4mA for OPA2134UAE4. ADA4075-2ARZ series offers 1.8mA per dual channels. AD8512ARZ series offers 2.2mA per dual channels.

Q9: What is the operating temperature range for substitute parts?

A: OPA2134UA maintains the original -40°C to 85°C range. All Analog Devices substitutes extend the range to -40°C to 125°C, providing improved thermal performance margin.

Q10: Can substitute parts be mixed in the same design?

A: All substitute parts maintain 8-SOIC package compatibility and dual-circuit configuration, allowing mixed usage in multi-amplifier designs. However, electrical performance differences (slew rate, bandwidth, supply voltage requirements) should be evaluated for each application circuit.

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