OPA2340PA Equivalent & Substitute Parts

Part Overview

The OPA2340PA is a CMOS dual-channel operational amplifier manufactured by Texas Instruments, housed in an 8-PDIP through-hole package. This device features rail-to-rail output capability and operates across a 2.5V to 5.5V supply range, making it suitable for low-power analog signal processing applications. The OPA2340PA is classified as obsolete, necessitating identification of functionally equivalent active alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility while accommodating modern packaging and availability constraints.

Key Parameters

Parameter	OPA2340PA Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	Channels
Output Type	Rail-to-Rail	—
Slew Rate	6	V/µs
Gain Bandwidth Product	5.5	MHz
Current - Input Bias	0.2	pA
Voltage - Input Offset	150	µV
Current - Supply (x2 Channels)	750	µA
Current - Output / Channel	50	mA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 85	°C
Package / Case	8-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the OPA2340PA is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Dual-channel configuration (2 circuits minimum)
Rail-to-rail output capability
Supply voltage range compatibility: 2.5V to 5.5V operation
8-DIP through-hole package format (0.300", 7.62mm)
Operating temperature range: -40°C to 85°C minimum
ROHS3 compliance and EAR99 classification

Secondary Compatibility Parameters:

Slew rate: 6V/µs or greater
Gain bandwidth product: 5.5 MHz or greater
Input bias current: 0.2 pA or lower
Input offset voltage: 150 µV or lower
Output current per channel: 50 mA or greater

Substitute parts are grouped into two categories:

Category 1 - Direct Electrical Equivalents (Identical or Superior Specifications): Parts meeting all primary criteria and matching or exceeding secondary parameters. These parts provide direct functional replacement with no design modifications required.

Category 2 - Functional Alternatives (Primary Criteria Met, Secondary Parameters Vary): Parts meeting all primary criteria but with different secondary specifications. These parts require application-level verification of performance adequacy.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Circuits	Output Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status
OPA2340PA	Texas Instruments	CMOS	2	Rail-to-Rail	6	5.5	0.2	150	750	50	2.5	5.5	-40 to 85	8-DIP	Obsolete
OPA2340UA/2K5	Texas Instruments	CMOS	2	Rail-to-Rail	6	5.5	0.2	150	750	50	2.5	5.5	-40 to 85	8-SOIC	Active
MCP6022-E/P	Microchip Technology	General Purpose	2	Rail-to-Rail	7	10	1	250	1000	30	2.5	5.5	-40 to 125	8-DIP	Active
MCP6022-I/P	Microchip Technology	General Purpose	2	Rail-to-Rail	7	10	1	500	1000	30	2.5	5.5	-40 to 85	8-DIP	Active
MCP6282-E/P	Microchip Technology	General Purpose	2	Rail-to-Rail	2.5	5	1	3000	450	25	2.2	5.5	-40 to 125	8-DIP	Active
MCP6292-E/P	Microchip Technology	General Purpose	2	Rail-to-Rail	7	10	1	3000	1000	25	2.4	6	-40 to 125	8-DIP	Active
LM6132BIN/NOPB	Texas Instruments	General Purpose	2	Rail-to-Rail	14	11	125000	1700	390	3.5	1.8	24	-40 to 85	8-DIP	Active
AD827JNZ	Analog Devices Inc.	General Purpose	2	Not Specified	300	50	3300	300	10000	32	9	36	0 to 70	8-DIP	Active
RE46C312E8F	Microchip Technology	General Purpose	2	Rail-to-Rail	0.003	0.01	Not Specified	3000	600	27	1.8	5.5	-10 to 60	8-DIP	Active

Engineering Selection Recommendations

Recommended Primary Substitute: OPA2340UA/2K5

The OPA2340UA/2K5 is the manufacturer-recommended substitute for the obsolete OPA2340PA. This part maintains identical electrical specifications and operating characteristics. The only difference is packaging format: surface-mount 8-SOIC (0.154", 3.90mm width) versus through-hole 8-DIP. This part is active and carries ROHS3 compliance with improved inventory availability (40,400 units in stock). Selection of this part requires PCB redesign to accommodate surface-mount assembly.

Recommended Secondary Substitute (Through-Hole Retention): MCP6022-I/P

For applications requiring retention of through-hole 8-DIP packaging, the MCP6022-I/P provides functional equivalence with the following characteristics:

Meets all primary substitution criteria
Exceeds slew rate (7V/µs vs. 6V/µs) and gain bandwidth product (10 MHz vs. 5.5 MHz)
Maintains rail-to-rail output and 2.5V to 5.5V supply range
Operating temperature range matches OPA2340PA (-40°C to 85°C)
Active product status with 1,422 units in stock
ROHS3 compliant

Input offset voltage specification differs (500 µV vs. 150 µV). Applications requiring input offset voltage below 250 µV should verify performance adequacy.

Alternative Consideration: MCP6022-E/P

The MCP6022-E/P provides identical electrical performance to MCP6022-I/P with extended operating temperature range (-40°C to 125°C). Input offset voltage specification is 250 µV. This part is suitable for applications requiring enhanced temperature performance.

Not Recommended for Direct Substitution:

LM6132BIN/NOPB: Input bias current (125 nA) exceeds OPA2340PA specification by six orders of magnitude. Output current per channel (3.5 mA) is insufficient for applications requiring 50 mA output.
AD827JNZ: Supply voltage range (9V to 36V minimum) incompatible with OPA2340PA (2.5V to 5.5V). Operating temperature range (0°C to 70°C) does not meet -40°C minimum requirement. Not suitable for low-voltage applications.
RE46C312E8F: Gain bandwidth product (10 kHz) and slew rate (0.003V/µs) are inadequate for general-purpose amplifier applications. Operating temperature range (-10°C to 60°C) does not meet specification.
MCP6282-E/P: Slew rate (2.5V/µs) and gain bandwidth product (5 MHz) fall below OPA2340PA specifications. Input offset voltage (3 mV) exceeds specification by 20×.

Frequently Asked Questions (FAQ)

Q: Can the OPA2340UA/2K5 be used as a direct replacement for the OPA2340PA?

A: Electrically, yes. The OPA2340UA/2K5 maintains identical specifications. However, the package format differs: OPA2340UA/2K5 uses surface-mount 8-SOIC while OPA2340PA uses through-hole 8-DIP. PCB redesign is required for assembly compatibility.

Q: What is the primary difference between MCP6022-E/P and MCP6022-I/P?

A: Both parts share identical electrical specifications and 8-DIP through-hole packaging. The difference is operating temperature range: MCP6022-E/P operates -40°C to 125°C, while MCP6022-I/P operates -40°C to 85°C. Select MCP6022-E/P for applications requiring extended high-temperature performance.

Q: Why is the LM6132BIN/NOPB not suitable as a substitute?

A: The LM6132BIN/NOPB has input bias current of 125 nanoamperes, which is six orders of magnitude higher than the OPA2340PA specification of 0.2 picoamperes. Additionally, output current per channel is 3.5 mA, insufficient for applications requiring 50 mA output capability.

Q: Does the AD827JNZ meet the supply voltage requirements of the OPA2340PA?

A: No. The AD827JNZ requires a minimum supply voltage of 9V, while the OPA2340PA operates from 2.5V. The AD827JNZ is designed for higher-voltage applications and is not compatible with low-voltage systems.

Q: Can I use the RE46C312E8F in place of the OPA2340PA?

A: No. The RE46C312E8F is a specialized ultra-low-power amplifier with gain bandwidth product of only 10 kHz and slew rate of 0.003V/µs. These specifications are inadequate for general-purpose amplifier applications. Additionally, the operating temperature range (-10°C to 60°C) does not meet the OPA2340PA specification.

Q: What parameters must remain constant when selecting a substitute?

A: The following parameters must be maintained: dual-channel configuration, rail-to-rail output, 2.5V to 5.5V supply range, 8-DIP through-hole package (for through-hole applications), and -40°C to 85°C operating temperature range. Slew rate, gain bandwidth product, and output current should meet or exceed OPA2340PA specifications for direct functional replacement.

Q: Is the MCP6292-E/P a suitable substitute?

A: The MCP6292-E/P meets primary substitution criteria with 8-DIP through-hole packaging and rail-to-rail output. However, input offset voltage specification (3 mV) significantly exceeds the OPA2340PA requirement (150 µV). Output current per channel (25 mA) is also below the OPA2340PA specification (50 mA). This part is suitable only for applications with relaxed input offset voltage and output current requirements.

Q: What compliance certifications should I verify for substitute parts?

A: All recommended substitute parts carry ROHS3 compliance and EAR99 classification, matching the OPA2340PA. Verify REACH status (all listed parts are REACH Unaffected) and moisture sensitivity level (MSL) for your specific assembly and storage requirements.

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