OPA2340PAG4 Equivalent & Substitute Parts

Part Overview

The OPA2340PAG4 is a CMOS dual-channel operational amplifier manufactured by Texas Instruments, designed for low-power applications requiring rail-to-rail output capability. This device belongs to the microPOWER™ series and is packaged in an 8-PDIP through-hole configuration. The OPA2340PAG4 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts must maintain compatibility with the original electrical specifications and mechanical form factor, or provide documented alternatives suitable for the application requirements.

Substiute Parts

OPA2340PAG4

Texas InstrumentsIn Stock: 1061OPA2340PAG4 Datasheet

Current PartRFQ

OPA2340PA

Texas InstrumentsIn Stock: 3733OPA2340PA Datasheet

MFR RecommendedRFQ

OPA2340UA/2K5

Texas InstrumentsIn Stock: 40466OPA2340UA/2K5 Datasheet

MFR RecommendedRFQ

LM6132BIN/NOPB

Texas InstrumentsIn Stock: 1327LM6132BIN/NOPB Datasheet

MFR RecommendedRFQ

MCP6022-E/P

Microchip TechnologyIn Stock: 1237MCP6022-E/P Datasheet

MFR RecommendedRFQ

MCP6022-I/P

Microchip TechnologyIn Stock: 1443MCP6022-I/P Datasheet

MFR RecommendedRFQ

MCP6282-E/P

Microchip TechnologyIn Stock: 2277MCP6282-E/P Datasheet

MFR RecommendedRFQ

MCP6292-E/P

Microchip TechnologyIn Stock: 2290MCP6292-E/P Datasheet

MFR RecommendedRFQ

RE46C312E8F

Microchip TechnologyIn Stock: 781RE46C312E8F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the OPA2340PAG4 is based on the following critical parameters that determine functional and mechanical compatibility:

Primary Substitution Criteria:

• Number of circuits: Must be 2 (dual-channel)
• Output type: Must be rail-to-rail
• Package type: 8-DIP through-hole preferred for direct pin compatibility
• Voltage supply span: Must encompass or match the 2.5 V to 5.5 V range
• Operating temperature range: Must support -40°C to 85°C minimum
• RoHS3 compliance: Required for regulatory alignment

Secondary Compatibility Factors:

• Slew rate, gain bandwidth product, and input bias current determine performance characteristics
• Input offset voltage and supply current affect circuit behavior and power consumption
• Output current capability must meet or exceed application requirements

Substitute parts are grouped into two categories:

Category 1 - Direct Equivalents (Same Package, CMOS Type): Parts maintaining 8-PDIP through-hole packaging and CMOS amplifier architecture with identical or superior electrical performance.

Category 2 - Functional Alternatives (Different Package or General Purpose Type): Parts offering equivalent electrical performance but with different packaging (surface mount) or amplifier type (general purpose), requiring design modification or board redesign.

Parameter Comparison

Engineering Selection Recommendations

Tier 1 - Preferred Direct Equivalent:

OPA2340PA is the manufacturer-recommended substitute for OPA2340PAG4. Both parts are Texas Instruments CMOS dual-channel amplifiers with identical electrical specifications (6 V/µs slew rate, 5.5 MHz gain bandwidth product, 150 µV input offset, 750 µA supply current). The OPA2340PA maintains the same 8-DIP through-hole package and operates across the identical -40°C to 85°C temperature range. The primary difference is packaging format (tube versus standard). OPA2340PA is classified as obsolete but remains available in inventory (3650 pcs). This part requires no circuit redesign and provides drop-in compatibility.

Tier 2 - Active CMOS Alternative (Package Modification Required):

OPA2340UA/2K5 is an active-status Texas Instruments CMOS dual-channel amplifier with identical electrical performance to the OPA2340PAG4. This part maintains the same 6 V/µs slew rate, 5.5 MHz gain bandwidth product, and 150 µV input offset voltage. However, OPA2340UA/2K5 uses surface-mount 8-SOIC packaging (0.154", 3.90 mm width) instead of through-hole 8-DIP. This substitution requires PCB redesign and reflow soldering capability. Inventory availability is significantly higher (40400 pcs), and product status is active, ensuring long-term supply continuity. Moisture sensitivity level is MSL 2 (1 Year) versus MSL 1 (Unlimited) for the original part.

Tier 3 - General Purpose Alternatives (Performance Trade-offs):

LM6132BIN/NOPB (Texas Instruments) provides higher performance specifications with 14 V/µs slew rate and 11 MHz gain bandwidth product, but introduces higher input bias current (125 nA versus 0.2 pA) and higher input offset voltage (1.7 mV versus 150 µV). This part supports extended supply voltage range (1.8 V to 24 V) and lower supply current (390 µA). Maintains 8-DIP through-hole packaging and -40°C to 85°C operating temperature. Suitable for applications where higher slew rate and bandwidth are beneficial and input offset voltage is not critical.

MCP6022-E/P and MCP6022-I/P (Microchip Technology) are general-purpose dual-channel amplifiers with 7 V/µs slew rate and 10 MHz gain bandwidth product. Both maintain 8-DIP through-hole packaging and 2.5 V to 5.5 V supply range. MCP6022-E/P supports -40°C to 125°C operating temperature, while MCP6022-I/P supports -40°C to 85°C. Input offset voltage is higher (250 µV for E/P, 500 µV for I/P) and supply current is higher (1 mA). These parts are active and available in quantity (1198 and 1422 pcs respectively).

MCP6282-E/P (Microchip Technology) offers lower power consumption (450 µA supply current) and extended temperature range (-40°C to 125°C) but with reduced performance (2.5 V/µs slew rate, 5 MHz gain bandwidth product). Input offset voltage is 3 mV. Maintains 8-DIP through-hole packaging and 2.2 V to 5.5 V supply range. Suitable for ultra-low-power applications where bandwidth and slew rate requirements are relaxed.

MCP6292-E/P (Microchip Technology) provides 7 V/µs slew rate and 10 MHz gain bandwidth product with extended temperature range (-40°C to 125°C) and slightly higher supply voltage maximum (6 V). Supply current is 1 mA and input offset voltage is 3 mV. Maintains 8-DIP through-hole packaging. Inventory is 2250 pcs.

Tier 4 - Ultra-Low-Power Alternative (Severe Performance Limitations):

RE46C312E8F (Microchip Technology) is a general-purpose dual-channel amplifier optimized for ultra-low-power operation with only 0.6 nA supply current (x2 channels). However, this part exhibits severely reduced performance: 0.003 V/µs slew rate and 10 kHz gain bandwidth product (versus 6 V/µs and 5.5 MHz for the original). Operating temperature range is limited to -10°C to 60°C, which does not meet the original -40°C to 85°C specification. This part is suitable only for applications where ultra-low power consumption is the primary requirement and performance specifications can be substantially relaxed.

Compliance and Certification:

All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, consistent with the original OPA2340PAG4. All parts carry EAR99 ECCN classification and HTSUS code 8542.33.0001.

Frequently Asked Questions (FAQ)

Q1: Can OPA2340PA be used as a direct replacement for OPA2340PAG4 without circuit modification?

A: Yes. OPA2340PA is the manufacturer-recommended equivalent. Both parts are Texas Instruments CMOS dual-channel amplifiers with identical electrical specifications, operating temperature range (-40°C to 85°C), and 8-DIP through-hole package. The only difference is packaging format (tube). No circuit redesign is required.

Q2: What is the key difference between OPA2340UA/2K5 and OPA2340PAG4?

A: OPA2340UA/2K5 has identical electrical performance but uses surface-mount 8-SOIC packaging instead of through-hole 8-DIP. This requires PCB redesign and reflow soldering. OPA2340UA/2K5 is active-status with higher inventory availability (40400 pcs), ensuring long-term supply continuity.

Q3: Why do the MCP6022 and MCP6292 parts have higher input offset voltage than the original OPA2340PAG4?

A: MCP6022 and MCP6292 are general-purpose amplifiers rather than CMOS micropower amplifiers. The OPA2340PAG4 is optimized for ultra-low input bias current (0.2 pA) and low input offset voltage (150 µV). General-purpose amplifiers prioritize other performance characteristics and typically have higher input offset voltage (250 µV to 3 mV). Selection depends on application sensitivity to input offset voltage.

Q4: Can LM6132BIN/NOPB be used in applications requiring the original -40°C to 85°C temperature range?

A: Yes. LM6132BIN/NOPB supports -40°C to 85°C operating temperature, matching the original specification. However, this part has higher input bias current (125 nA versus 0.2 pA) and higher input offset voltage (1.7 mV versus 150 µV), which may affect circuit performance in precision applications.

Q5: Is RE46C312E8F suitable as a general substitute for OPA2340PAG4?

A: No. RE46C312E8F is optimized for ultra-low-power applications and exhibits severely reduced performance (0.003 V/µs slew rate, 10 kHz bandwidth) compared to the original (6 V/µs, 5.5 MHz). Additionally, its operating temperature range (-10°C to 60°C) does not meet the original -40°C to 85°C specification. This part is suitable only for applications where ultra-low power consumption is the primary requirement and performance can be substantially compromised.

Q6: What packaging considerations apply when selecting a substitute?

A: The original OPA2340PAG4 uses through-hole 8-DIP packaging (0.300", 7.62 mm). Most substitutes maintain this package type, allowing direct PCB compatibility. OPA2340UA/2K5 is the only substitute using surface-mount 8-SOIC packaging (0.154", 3.90 mm), which requires PCB redesign and reflow soldering capability. Through-hole packages are preferred for direct replacement without board modification.

Q7: Which substitute offers the best long-term supply continuity?

A: OPA2340UA/2K5 is the recommended choice for long-term supply continuity. This part has active product status and the highest inventory availability (40400 pcs). While it requires surface-mount packaging conversion, it ensures sustained availability beyond the obsolete OPA2340PAG4 and OPA2340PA.

Q8: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (OPA2340PA, OPA2340UA/2K5, LM6132BIN/NOPB, MCP6022-E/P, MCP6022-I/P, MCP6282-E/P, MCP6292-E/P, and RE46C312E8F) are ROHS3 compliant and REACH unaffected, consistent with the original OPA2340PAG4.

Q9: What is the primary performance trade-off when using MCP6282-E/P instead of OPA2340PAG4?

A: MCP6282-E/P has significantly reduced slew rate (2.5 V/µs versus 6 V/µs) and gain bandwidth product (5 MHz versus 5.5 MHz), but offers lower supply current (450 µA versus 750 µA) and extended operating temperature range (-40°C to 125°C). This part is suitable for low-power applications where bandwidth requirements are relaxed.

Q10: Can multiple substitute parts be used interchangeably in the same design?

A: No. Each substitute part has different electrical characteristics. Once a specific substitute is selected and the circuit is designed or validated for that part, changing to a different substitute requires re-evaluation of circuit performance, particularly for parameters such as input offset voltage, slew rate, gain bandwidth product, and supply current. Substitution should be made only after confirming compatibility with application requirements.