OP293ES Equivalent & Substitute Parts

Part Overview

The OP293ES is a general-purpose operational amplifier manufactured by Analog Devices Inc., housed in an 8-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement. The OP293ES features a single amplifier circuit with a 35 kHz gain bandwidth product and operates across a wide supply voltage range of 1.7 V to 36 V, making it suitable for low-speed analog signal processing applications. Due to its obsolete status, equivalent parts with active product status are required for new designs and component replenishment.

Key Parameters

Parameter	OP293ES Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Slew Rate	0.015	V/µs
Gain Bandwidth Product	35	kHz
Current - Input Bias	15	nA
Voltage - Input Offset	100	µV
Current - Output / Channel	25	mA
Voltage - Supply Span (Min)	1.7	V
Voltage - Supply Span (Max)	36	V
Operating Temperature Range	-40 to 125	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the OP293ES is determined by compatibility across the following critical parameters: package type (8-SOIC surface mount), supply voltage range, operating temperature range, and functional amplifier classification. The OP293ES contains a single amplifier circuit; however, substitute parts may contain multiple circuits within the same package footprint, provided the individual circuit specifications remain compatible with the application requirements.

The primary substitution criterion is the 8-SOIC package compatibility, which ensures mechanical and electrical pin-to-pin alignment. Secondary criteria include supply voltage span overlap and operating temperature range coverage. The OP293ES operates from 1.7 V to 36 V; substitute parts must support the minimum and maximum supply voltages required by the application.

Substitute parts are grouped into two categories:

Direct Substitutes: Parts with identical or superior electrical characteristics and active product status, enabling direct replacement without circuit modification.

Functional Equivalents: Parts with comparable general-purpose amplifier functionality in the same package, suitable for applications where the OP293ES performance envelope is not fully utilized.

Parameter Comparison

Parameter	OP293ES	OP293ESZ	LM258ADT	LM258DT	LM2904AYDT	LM2904DT	LM2904YDT	LM358ADT	LM358DT	MC33078DT	MC33078YDT
Manufacturer	Analog Devices	Analog Devices	STMicroelectronics	STMicroelectronics	STMicroelectronics	Rohm Semiconductor	STMicroelectronics	STMicroelectronics	Rohm Semiconductor	STMicroelectronics	STMicroelectronics
Number of Circuits	1	1	2	2	2	2	2	2	2	2	2
Slew Rate (V/µs)	0.015	0.015	0.6	0.6	0.6	0.3	0.6	0.6	0.3	7	7
Gain Bandwidth Product (kHz)	35	35	1100	1100	1100	700	700	1100	800	15000	15000
Current - Input Bias (nA)	15	15	20	20	20	20	20	20	20	250	250
Voltage - Input Offset (µV)	100	100	1000	5000	1000	1000	2000	1000	1000	150	150
Current - Output / Channel (mA)	25	25	40	40	40	30	30	40	30	37	37
Voltage - Supply Span Min (V)	1.7	1.7	3	3	3	3	3	3	3	5	5
Voltage - Supply Span Max (V)	36	36	30	30	30	32	30	30	32	30	30
Operating Temperature Range (°C)	-40 to 125	-40 to 125	-40 to 105	-40 to 105	-40 to 125	-40 to 125	-40 to 125	0 to 70	-40 to 85	-40 to 105	-40 to 105
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Product Status	Obsolete	Active	Active	Active	Active	Not For New Designs	Active	Active	Obsolete	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
AEC-Q100 Qualification	—	—	Yes	—	Yes	—	Yes	Yes	—	Yes	Yes

Engineering Selection Recommendations

Primary Recommendation: OP293ESZ

The OP293ESZ is the direct equivalent of the OP293ES, manufactured by Analog Devices Inc. with identical electrical specifications and the same 8-SOIC package. The OP293ESZ maintains active product status and is ROHS3 compliant, making it the preferred replacement for obsolete OP293ES units. This part requires no circuit redesign and provides identical performance characteristics. The OP293ESZ is available in tube packaging and maintains full compatibility with existing designs.

Secondary Recommendations for Extended Supply Voltage Applications:

The LM2904AYDT and LM2904YDT are suitable alternatives when the application requires extended operating temperature range (-40°C to 125°C) and automotive-grade qualification (AEC-Q100). Both parts operate within the OP293ES supply voltage envelope (3 V to 30 V minimum overlap) and are housed in 8-SOIC packages. The LM2904AYDT is manufactured by STMicroelectronics with active product status, while the LM2904YDT is also active and AEC-Q100 qualified. These parts contain two amplifier circuits, allowing for dual-channel applications or single-channel operation with redundancy.

Recommendations for Low Supply Voltage Applications:

Applications requiring operation below 3 V cannot use LM258, LM2904, LM358, or MC33078 series parts, as these devices specify a minimum supply voltage of 3 V. The OP293ESZ remains the only viable substitute for designs requiring 1.7 V minimum supply operation.

Recommendations for High-Speed Applications:

The MC33078DT and MC33078YDT offer significantly higher slew rate (7 V/µs) and gain bandwidth product (15 MHz) compared to the OP293ES (0.015 V/µs, 35 kHz). These parts are suitable for applications requiring faster signal processing and are AEC-Q100 qualified. However, the MC33078 series requires a minimum supply voltage of 5 V, restricting use in low-voltage designs. Both MC33078 variants are active and ROHS3 compliant.

Compliance Considerations:

All recommended substitute parts are ROHS3 compliant and REACH unaffected. Parts with AEC-Q100 qualification (LM258ADT, LM2904AYDT, LM2904YDT, LM358ADT, MC33078DT, MC33078YDT) are suitable for automotive applications. Parts with obsolete or "Not For New Designs" status (LM2904DT, LM358DT) should be avoided for new designs despite potential availability.

Frequently Asked Questions (FAQ)

Q: Can the OP293ESZ be used as a direct replacement for the OP293ES?

A: Yes. The OP293ESZ is manufactured by Analog Devices Inc. with identical electrical specifications, operating temperature range (-40°C to 125°C), supply voltage range (1.7 V to 36 V), and 8-SOIC package. The only difference is packaging format (tube versus unspecified for the original OP293ES). No circuit modification is required.

Q: Why do substitute parts like LM258ADT contain two amplifier circuits instead of one?

A: The LM258ADT and similar parts integrate two independent amplifier circuits within the same 8-SOIC package footprint. Applications requiring only a single amplifier can use one circuit and leave the second circuit unused or configured for additional functionality. The pin configuration remains compatible with single-amplifier designs.

Q: What is the minimum supply voltage for each substitute part?

A: The OP293ESZ operates from 1.7 V minimum. The LM258, LM2904, and LM358 series require 3 V minimum. The MC33078 series requires 5 V minimum. Applications operating below 3 V must use the OP293ESZ.

Q: Are all substitute parts ROHS3 compliant?

A: All active substitute parts listed are ROHS3 compliant. Obsolete parts (LM358DT) and parts marked "Not For New Designs" (LM2904DT) are also ROHS3 compliant but should not be selected for new designs.

Q: Which substitute parts are AEC-Q100 qualified for automotive applications?

A: The following parts are AEC-Q100 qualified: LM258ADT, LM2904AYDT, LM2904YDT, LM358ADT, MC33078DT, and MC33078YDT. These parts are suitable for automotive-grade designs.

Q: What is the difference between LM2904AYDT and LM2904YDT?

A: Both parts are manufactured by STMicroelectronics, are AEC-Q100 qualified, and have active product status. The LM2904AYDT specifies a voltage input offset of 1 mV, while the LM2904YDT specifies 2 mV. Both operate across -40°C to 125°C and are suitable for automotive applications. Selection depends on offset voltage tolerance requirements.

Q: Can MC33078DT be used in place of OP293ES in all applications?

A: No. The MC33078DT requires a minimum supply voltage of 5 V, while the OP293ES operates from 1.7 V. Applications operating below 5 V cannot use the MC33078DT. Additionally, the MC33078DT has significantly higher input bias current (250 nA versus 15 nA), which may affect precision analog circuits.

Q: What is the difference between LM258ADT and LM258DT?

A: Both are manufactured by STMicroelectronics in 8-SOIC packages. The LM258ADT is AEC-Q100 qualified with 1 mV input offset voltage. The LM258DT is not AEC-Q100 qualified and specifies 5 mV input offset voltage. For automotive applications, the LM258ADT is preferred.

Q: Why is LM2904DT marked as "Not For New Designs"?

A: The LM2904DT is manufactured by Rohm Semiconductor and has a product status of "Not For New Designs," indicating that the manufacturer recommends against using this part in new designs. Although inventory may be available, the LM2904AYDT or LM2904YDT from STMicroelectronics are preferred alternatives with active product status.

Q: Is the 8-SOIC package identical across all substitute parts?

A: Yes. All parts listed use the 8-SOIC package with 0.154" width and 3.90 mm width specification. The package footprint is identical, ensuring mechanical compatibility on printed circuit boards. However, some parts specify alternative supplier device packages (8-SOP-J, 8-SOP) which may have minor dimensional variations; verify with the specific manufacturer datasheet if precision placement is critical.

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