OP293FS-REEL7 Equivalent & Substitute Parts

Part Overview

The OP293FS-REEL7 is a general-purpose operational amplifier manufactured by Analog Devices Inc., housed in an 8-SOIC surface mount package. This device 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. The OP293FS-REEL7 is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. Substitute parts must maintain compatibility with the original electrical specifications while offering active product status and improved availability.

Key Parameters

Parameter	OP293FS-REEL7
Manufacturer	Analog Devices Inc.
Category	Linear, Amplifiers
Amplifier Type	General Purpose
Number of Circuits	1
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Slew Rate	0.015 V/µs
Gain Bandwidth Product	35 kHz
Current - Input Bias	20 nA
Voltage - Input Offset	250 µV
Current - Output / Channel	25 mA
Voltage - Supply Span (Min)	1.7 V
Voltage - Supply Span (Max)	36 V
Operating Temperature	-40°C ~ 125°C
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the OP293FS-REEL7 is determined by the following critical parameters: package type (8-SOIC surface mount), number of amplifier circuits, supply voltage range compatibility, operating temperature range, and electrical performance characteristics including slew rate, gain bandwidth product, input bias current, and output current capability.

The OP293FS-REEL7 is a single-circuit operational amplifier. Direct substitutes must maintain the same circuit count and package footprint. However, the obsolete status of this device necessitates evaluation of functionally similar alternatives that may feature enhanced performance specifications while remaining pin-compatible and electrically compatible within the application's operating parameters.

Substitute parts are grouped into two categories:

Direct Equivalent (Same Circuit Count): OP293FSZ-REEL7 from Analog Devices Inc. maintains identical electrical specifications and single-circuit architecture with active product status.

Functional Alternatives (Dual-Circuit Devices): LM2904AYDT, LM2904YDT, LM258ADT, LM258DT, LM2904DT, LM358ADT, LM358DT, MC33078DT, and MC33078YDT are dual-circuit operational amplifiers in 8-SOIC packages. These devices offer enhanced performance characteristics and active product status. Selection of dual-circuit alternatives requires circuit design consideration, as only one amplifier per package may be utilized in single-circuit applications, or both circuits may be employed in dual-amplifier configurations.

Parameter Comparison

Parameter	OP293FS-REEL7	OP293FSZ-REEL7	LM2904AYDT	LM2904YDT	LM2904DT	LM258ADT	LM258DT	LM358ADT	LM358DT	MC33078DT	MC33078YDT
Manufacturer	Analog Devices Inc.	Analog Devices Inc.	STMicroelectronics	STMicroelectronics	Rohm Semiconductor	STMicroelectronics	STMicroelectronics	STMicroelectronics	Rohm Semiconductor	STMicroelectronics	STMicroelectronics
Number of Circuits	1	1	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
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Slew Rate (V/µs)	0.015	0.015	0.6	0.6	0.3	0.6	0.6	0.6	0.3	7	7
Gain Bandwidth Product (kHz)	35	35	1100	700	700	1100	1100	1100	800	15000	15000
Current - Input Bias (nA)	20	20	20	20	20	20	20	20	20	250	250
Voltage - Input Offset (µV)	250	250	1000	2000	1000	1000	5000	1000	1000	150	150
Current - Output / Channel (mA)	25	25	40	30	30	40	40	40	30	37	37
Voltage - Supply Span (Min)	1.7 V	1.7 V	3 V	3 V	3 V	3 V	3 V	3 V	3 V	5 V	5 V
Voltage - Supply Span (Max)	36 V	36 V	30 V	30 V	32 V	30 V	30 V	30 V	32 V	30 V	30 V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 105°C	-40°C ~ 105°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 105°C
Product Status	Obsolete	Active	Active	Active	Not For New Designs	Active	Active	Active	Obsolete	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
AEC-Q100 Qualification	Not specified	Not specified	Yes	Yes	Not specified	Yes	Not specified	Yes	Not specified	Yes	Yes

Engineering Selection Recommendations

Primary Recommendation: OP293FSZ-REEL7

The OP293FSZ-REEL7 is the direct equivalent substitute for the OP293FS-REEL7. This device maintains identical electrical specifications, single-circuit architecture, and 8-SOIC package footprint. The OP293FSZ-REEL7 carries active product status and is ROHS3 compliant, providing superior long-term availability and regulatory compliance compared to the obsolete OP293FS-REEL7. This substitute requires no circuit redesign and provides pin-for-pin compatibility.

Secondary Recommendations: Dual-Circuit Alternatives

For applications where dual-amplifier functionality can be integrated into the design, the following devices offer active product status and enhanced performance:

LM2904AYDT and LM2904YDT (STMicroelectronics) provide dual general-purpose amplifiers with improved slew rate (0.6 V/µs) and gain bandwidth product (700 kHz to 1.1 MHz) compared to the OP293FS-REEL7. Both devices are AEC-Q100 qualified and ROHS3 compliant. LM2904AYDT supports the full operating temperature range (-40°C ~ 125°C) matching the original device.

LM258ADT (STMicroelectronics) offers dual amplifiers with 1.1 MHz gain bandwidth product and AEC-Q100 qualification. Operating temperature range is -40°C ~ 105°C.

LM358ADT (STMicroelectronics) provides dual amplifiers with 1.1 MHz gain bandwidth product and AEC-Q100 qualification. Operating temperature range is 0°C ~ 70°C, which is narrower than the original specification.

MC33078DT and MC33078YDT (STMicroelectronics) are high-performance dual amplifiers with 15 MHz gain bandwidth product, 7 V/µs slew rate, and AEC-Q100 qualification. These devices require minimum 5 V supply voltage, which exceeds the OP293FS-REEL7 minimum of 1.7 V.

Devices Not Recommended for New Designs:

LM2904DT (Rohm Semiconductor) carries "Not For New Designs" status. LM358DT (Rohm Semiconductor) is obsolete. Both devices should be avoided in new design implementations.

Frequently Asked Questions (FAQ)

Q: Can the OP293FSZ-REEL7 be used as a direct replacement for the OP293FS-REEL7?

A: Yes. The OP293FSZ-REEL7 is electrically and mechanically identical to the OP293FS-REEL7. Both devices feature single-circuit architecture, identical electrical specifications, and 8-SOIC package footprint. The primary difference is product status: OP293FSZ-REEL7 is active while OP293FS-REEL7 is obsolete. No circuit modifications are required.

Q: What is the key difference between single-circuit and dual-circuit operational amplifiers in 8-SOIC packages?

A: Single-circuit devices contain one operational amplifier per package. Dual-circuit devices contain two operational amplifiers sharing the same power supply pins within a single 8-SOIC package. Pin assignments differ between single and dual configurations. Direct substitution of a dual-circuit device for a single-circuit device requires verification of pin compatibility and may require circuit redesign if both amplifiers are to be utilized.

Q: Why do some substitute parts have higher minimum supply voltage requirements?

A: Operational amplifier designs vary in their internal circuit architecture. The OP293FS-REEL7 operates at minimum 1.7 V supply voltage due to its specific design. Devices such as MC33078DT require minimum 5 V supply voltage due to different internal circuit topologies optimized for higher performance specifications. Selection of substitutes must account for application supply voltage constraints.

Q: What does "Not For New Designs" product status mean?

A: "Not For New Designs" indicates that the manufacturer no longer recommends the device for new circuit designs, though existing inventory may remain available. These devices typically have limited long-term availability and may be discontinued without notice. Active product status devices are preferred for new designs to ensure sustained availability and manufacturer support.

Q: How do slew rate and gain bandwidth product affect operational amplifier selection?

A: Slew rate determines the maximum rate of change of output voltage per unit time, measured in V/µs. Gain bandwidth product defines the frequency response of the amplifier. The OP293FS-REEL7 features low slew rate (0.015 V/µs) and low gain bandwidth product (35 kHz), suitable for low-frequency, low-speed applications. Substitute devices with higher values support faster signal processing but may introduce different noise and stability characteristics. Application requirements determine whether enhanced performance specifications are beneficial or unnecessary.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed carry ROHS3 compliance status. The original OP293FS-REEL7 does not specify RoHS status. ROHS3 compliance ensures the device contains no restricted hazardous substances and meets environmental regulatory requirements for electronic components.

Q: What is the significance of AEC-Q100 qualification?

A: AEC-Q100 is an automotive electronics qualification standard. Devices bearing AEC-Q100 qualification have undergone rigorous testing for reliability and performance in automotive applications. This qualification is relevant for applications requiring automotive-grade component reliability. Non-automotive applications may not require this qualification.

Q: Can the OP293FS-REEL7 operate at supply voltages below 3 V?

A: Yes. The OP293FS-REEL7 operates at minimum 1.7 V supply voltage. Most dual-circuit substitute devices (LM2904, LM258, LM358 series) require minimum 3 V supply voltage. MC33078 devices require minimum 5 V. Applications utilizing supply voltages between 1.7 V and 3 V must use the OP293FSZ-REEL7 or OP293FS-REEL7, as alternative devices do not support this voltage range.

Q: What is the Moisture Sensitivity Level (MSL) and why is it important?

A: MSL indicates the maximum time a component can be exposed to ambient moisture before soldering without risk of damage. MSL 1 (Unlimited) means the component has no moisture sensitivity restrictions and can be stored indefinitely without special desiccant packaging. All listed devices carry MSL 1 rating, eliminating moisture-related handling concerns.

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