OPA2134PAG4 Equivalent & Substitute Parts Reference

Part Overview

The OPA2134PAG4 is a dual-channel audio amplifier integrated circuit manufactured by Texas Instruments, classified as a linear amplifier in the SoundPlus™ series. This component features two independent audio amplifier circuits housed in an 8-pin DIP package with through-hole mounting. The OPA2134PAG4 is designated as Last Time Buy, indicating discontinued production status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain resilience, and support long-term product availability for applications requiring audio amplification with the specified electrical and mechanical characteristics.

Substiute Parts

OPA2134PAG4

Texas InstrumentsIn Stock: 1171OPA2134PAG4 Datasheet

Current PartRFQ

OPA2134PA

Texas InstrumentsIn Stock: 6257OPA2134PA Datasheet

MFR RecommendedRFQ

OPA2134UA/2K5

Texas InstrumentsIn Stock: 24983OPA2134UA/2K5 Datasheet

MFR RecommendedRFQ

LT1057CN8#PBF

Analog Devices Inc.In Stock: 1538LT1057CN8#PBF Datasheet

MFR RecommendedRFQ

LT1113CN8#PBF

Analog Devices Inc.In Stock: 1134LT1113CN8#PBF Datasheet

MFR RecommendedRFQ

LT1169CN8#PBF

Analog Devices Inc.In Stock: 1006LT1169CN8#PBF Datasheet

MFR RecommendedRFQ

MUSES8820D

Nisshinbo Micro Devices Inc.In Stock: 2985MUSES8820D Datasheet

MFR RecommendedRFQ

OP275GPZ

Analog Devices Inc.In Stock: 3074OP275GPZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the OPA2134PAG4 are classified based on strict alignment with the following critical parameters:

Primary Substitution Criteria:

• Amplifier Type: Audio
• Number of Circuits: 2
• Package / Case: 8-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Voltage - Supply Span: Minimum 5V, Maximum 36V
• Operating Temperature: -40°C to 85°C
• Slew Rate: 20V/µs
• Gain Bandwidth Product: 8 MHz

Substitution Groups:

Group 1: Direct Pin-Compatible Audio Amplifiers (8-DIP Through Hole) Parts meeting all primary criteria with identical electrical performance envelope:

• OPA2134PA (Texas Instruments)
• OP275GPZ (Analog Devices Inc.)
• MUSES8820D (Nisshinbo Micro Devices Inc.)

Group 2: Alternative Mounting Technology (Surface Mount) Parts with identical electrical specifications but different package format:

• OPA2134UA/2K5 (Texas Instruments, 8-SOIC Surface Mount)

Group 3: J-FET Amplifier Alternatives (8-DIP Through Hole) Parts with different amplifier topology (J-FET vs. standard audio amplifier) and modified electrical characteristics:

• LT1057CN8#PBF (Analog Devices Inc.)
• LT1113CN8#PBF (Analog Devices Inc.)
• LT1169CN8#PBF (Analog Devices Inc.)

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Pin-Compatible, Identical Electrical Performance):

OPA2134PA is the primary direct substitute for OPA2134PAG4. Both parts are manufactured by Texas Instruments, share identical electrical specifications, and are housed in the same 8-DIP through-hole package. OPA2134PA maintains ROHS3 compliance and is designated Last Time Buy status, indicating similar lifecycle positioning. This substitution requires no circuit modifications and provides 100% functional equivalence.

For Active Product Status Requirement:

OPA2134UA/2K5 is the recommended substitute when active product status is required. This part maintains all electrical specifications of the OPA2134PAG4 but uses surface-mount 8-SOIC packaging. Circuit board redesign is necessary to accommodate the different package format. OPA2134UA/2K5 is manufactured by Texas Instruments and carries Active product status with ROHS3 compliance.

For Through-Hole Package with Active Status:

OP275GPZ (Analog Devices Inc.) provides through-hole 8-DIP packaging with Active product status. This part exhibits higher slew rate (22V/µs vs. 20V/µs), marginally higher gain bandwidth product (9 MHz vs. 8 MHz), and increased output current capability (90 mA vs. 35 mA). Input bias current is higher (100 nA vs. 5 pA), and input offset voltage is elevated (1 mV vs. 500 µV). Supply voltage range extends to 44V maximum. OP275GPZ is suitable for applications where the OPA2134PAG4's performance envelope is exceeded and higher output drive capability is beneficial.

MUSES8820D (Nisshinbo Micro Devices Inc.) offers through-hole 8-DIP packaging with Active product status. This part features higher gain bandwidth product (11 MHz vs. 8 MHz) and increased output current (50 mA vs. 35 mA), but exhibits lower slew rate (5V/µs vs. 20V/µs) and higher supply current (8 mA vs. 4 mA). Operating temperature range matches the OPA2134PAG4. MUSES8820D is suitable for applications prioritizing bandwidth over slew rate performance.

For J-FET Topology Alternatives:

LT1113CN8#PBF and LT1169CN8#PBF are J-FET amplifiers offering through-hole 8-DIP packaging with Active product status. These parts feature significantly lower input bias current and different frequency response characteristics. LT1113CN8#PBF supports the full -40°C to 85°C temperature range; LT1169CN8#PBF operates 0°C to 70°C. J-FET topology selection is appropriate for applications requiring ultra-low input bias current or specific noise performance characteristics not achievable with standard audio amplifier topology.

LT1057CN8#PBF is a J-FET alternative with lower slew rate (13V/µs) and reduced gain bandwidth product (5 MHz), operating within 0°C to 70°C temperature range. This part is suitable for applications where J-FET input characteristics are required within a narrower temperature specification.

Compliance and Certification:

All recommended substitutes maintain ROHS3 compliance and REACH Unaffected status, matching the OPA2134PAG4 regulatory posture. All parts carry EAR99 ECCN classification and identical HTSUS commodity code (8542.33.0001).

Frequently Asked Questions (FAQ)

Q1: Can OPA2134PA be used as a direct replacement for OPA2134PAG4 without circuit modifications?

A: Yes. OPA2134PA is electrically and mechanically identical to OPA2134PAG4. Both parts share the same 8-DIP through-hole package, identical pin configuration, and all electrical specifications including slew rate (20V/µs), gain bandwidth product (8 MHz), supply voltage range (5V to 36V), and operating temperature (-40°C to 85°C). No circuit modifications are required.

Q2: What is the primary difference between OPA2134UA/2K5 and OPA2134PAG4?

A: The primary difference is package format. OPA2134UA/2K5 uses 8-SOIC surface-mount packaging, while OPA2134PAG4 uses 8-DIP through-hole packaging. All electrical specifications are identical. Circuit board redesign is necessary to accommodate the different package footprint and pin spacing.

Q3: Why would OP275GPZ be selected over OPA2134PAG4?

A: OP275GPZ is selected when higher output current capability (90 mA vs. 35 mA) or extended supply voltage range (up to 44V vs. 36V) is required. OP275GPZ also offers slightly higher slew rate (22V/µs vs. 20V/µs) and gain bandwidth product (9 MHz vs. 8 MHz). However, OP275GPZ exhibits higher input bias current (100 nA vs. 5 pA) and input offset voltage (1 mV vs. 500 µV), which may impact precision audio applications.

Q4: What are the key differences between audio amplifier and J-FET amplifier substitutes?

A: Audio amplifiers (OPA2134 series, OP275GPZ, MUSES8820D) use standard bipolar or CMOS input stages. J-FET amplifiers (LT1057CN8#PBF, LT1113CN8#PBF, LT1169CN8#PBF) use J-FET input stages, resulting in ultra-low input bias current (typically 4-300 pA vs. 100 nA for audio amplifiers). J-FET alternatives typically exhibit lower slew rates and reduced gain bandwidth products. Selection depends on application requirements for input impedance, bias current, and frequency response.

Q5: Is MUSES8820D suitable for high-speed audio applications?

A: MUSES8820D features higher gain bandwidth product (11 MHz vs. 8 MHz) but significantly lower slew rate (5V/µs vs. 20V/µs). For applications requiring fast transient response and high-speed signal handling, OPA2134PAG4 or OP275GPZ are more appropriate. MUSES8820D is suitable for applications prioritizing bandwidth extension over slew rate performance.

Q6: Can LT1113CN8#PBF operate across the full -40°C to 85°C temperature range?

A: Yes. LT1113CN8#PBF is rated for -40°C to 85°C operation, matching the OPA2134PAG4 temperature specification. LT1169CN8#PBF operates within a narrower range (0°C to 70°C) and is not suitable for applications requiring full -40°C to 85°C coverage.

Q7: What supply voltage range must be considered when selecting substitutes?

A: OPA2134PAG4 operates with supply voltage from 5V minimum to 36V maximum. OP275GPZ extends the maximum to 44V. LT1113CN8#PBF and LT1169CN8#PBF require minimum 9V supply. MUSES8820D operates from 7V minimum. Verify that the selected substitute's supply voltage range encompasses the application's power supply specifications.

Q8: Are all substitutes ROHS3 compliant?

A: Yes. All recommended substitutes (OPA2134PA, OPA2134UA/2K5, OP275GPZ, MUSES8820D, LT1057CN8#PBF, LT1113CN8#PBF, LT1169CN8#PBF) are ROHS3 compliant and REACH Unaffected, matching the OPA2134PAG4 regulatory compliance status.

Q9: Which substitute offers the lowest input bias current?

A: LT1169CN8#PBF offers the lowest input bias current at 4 pA, compared to OPA2134PAG4 at 5 pA. Among audio amplifier alternatives, OP275GPZ and MUSES8820D both specify 100 nA input bias current. For applications requiring ultra-low input bias current, J-FET alternatives (LT1057CN8#PBF at 7 pA, LT1113CN8#PBF at 300 pA, LT1169CN8#PBF at 4 pA) are appropriate.

Q10: What is the inventory status of substitute parts?

A: OPA2134PA: 6,198 pcs. OPA2134UA/2K5: 24,900 pcs. OP275GPZ: 2,990 pcs. MUSES8820D: 2,945 pcs. LT1057CN8#PBF: 1,522 pcs. LT1113CN8#PBF: 1,123 pcs. LT1169CN8#PBF: 938 pcs. OPA2134UA/2K5 offers the highest inventory availability.