OP213FS Equivalent & Substitute Parts

Part Overview

The OP213FS is a general-purpose operational amplifier manufactured by Analog Devices Inc., configured as a dual-channel (2 circuit) device in an 8-SOIC surface-mount package. This device features rail-to-rail output capability, making it suitable for applications requiring full supply voltage swing utilization. The OP213FS is classified as obsolete, indicating it has reached end-of-life status and is no longer recommended for new designs. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support legacy system maintenance or redesign initiatives.

Key Parameters

Parameter	OP213FS Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	1.2	V/µs
Gain Bandwidth Product	3.4	MHz
Current - Input Bias	600	nA
Voltage - Input Offset	250	µV
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	36	V
Operating Temperature Range	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the OP213FS is determined by compatibility across the following critical parameters:

Primary Compatibility Criteria:

Number of circuits: 2 (dual-channel configuration)
Package type: 8-SOIC surface-mount form factor
Output type: Rail-to-rail capability (preferred for direct replacement)
Supply voltage range: Minimum 4 V to maximum 36 V
Output current per channel: 40 mA
Operating temperature range: -40°C to 85°C (minimum requirement)

Substitution Categories:

Direct Equivalent (Identical Specifications): OP213FSZ is the active production equivalent of OP213FS, maintaining all electrical and mechanical specifications while offering improved product status and RoHS3 compliance.

Functional Equivalents (Similar Performance, Different Characteristics): Parts including LM258ADT, LM258DT, LM2904AYDT, LM2904YDT, and LM358ADT operate as general-purpose dual-channel amplifiers in 8-SOIC packages. These devices share the same circuit count, package, and mounting type but exhibit lower slew rates (0.6 V/µs), reduced gain-bandwidth products (0.7–1.1 MHz), and lower input bias currents (20 nA). These parts are suitable for applications where the OP213FS performance specifications exceed system requirements.

Performance-Enhanced Alternatives: LM7372MR/NOPB and LM7372MRX/NOPB are voltage feedback amplifiers with significantly higher performance metrics (3000 V/µs slew rate, 120 MHz gain-bandwidth product). These devices are applicable only when enhanced bandwidth and slew rate performance are required and the higher supply voltage minimum (9 V) is acceptable.

Legacy Alternatives: LM2904DT and LM358DT are obsolete devices with reduced performance specifications and are not recommended for new applications.

Parameter Comparison

Parameter	OP213FS	OP213FSZ	LM258ADT	LM2904AYDT	LM2904YDT	LM358ADT	LM7372MR/NOPB
Manufacturer	Analog Devices	Analog Devices	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	Texas Instruments
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	Voltage Feedback
Number of Circuits	2	2	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	—	Single-Ended	Single-Ended	—	—
Slew Rate (V/µs)	1.2	1.2	0.6	0.6	0.6	0.6	3000
Gain Bandwidth Product (MHz)	3.4	3.4	1.1	1.1	0.7	1.1	120
Current - Input Bias (nA)	600	600	20	20	20	20	2700
Voltage - Input Offset (µV)	250	250	1000	1000	2000	1000	2000
Current - Output / Channel (mA)	40	40	40	40	30	40	260
Voltage - Supply Span Min (V)	4	4	3	3	3	3	9
Voltage - Supply Span Max (V)	36	36	30	30	30	30	36
Operating Temperature Range (°C)	-40 to 85	-40 to 85	-40 to 105	-40 to 125	-40 to 125	0 to 70	-40 to 85
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-PowerSOIC
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS3 Compliance	—	Yes	Yes	Yes	Yes	Yes	Yes

Engineering Selection Recommendations

For Direct Replacement (Preferred): OP213FSZ is the recommended substitute for OP213FS. This device maintains identical electrical specifications, package configuration, and operating temperature range while offering active product status and RoHS3 compliance. The transition from OP213FS to OP213FSZ requires no circuit modifications and provides improved supply chain availability.

For Performance-Adequate Substitution: LM258ADT, LM2904AYDT, and LM358ADT are suitable alternatives when the OP213FS performance specifications exceed application requirements. These devices operate within the same 8-SOIC package and maintain dual-channel configuration. Key trade-offs include reduced slew rate (0.6 V/µs versus 1.2 V/µs), lower gain-bandwidth product (1.1 MHz versus 3.4 MHz), and significantly lower input bias current (20 nA versus 600 nA). All three devices carry active product status and RoHS3 compliance. LM2904AYDT and LM358ADT include AEC-Q100 automotive qualification.

For Extended Temperature Range Applications: LM2904AYDT and LM2904YDT support operating temperatures to 125°C, exceeding the OP213FS specification of 85°C. These devices are applicable for high-temperature environments where the OP213FS temperature rating is insufficient.

For Enhanced Performance Applications: LM7372MR/NOPB and LM7372MRX/NOPB provide significantly higher performance (3000 V/µs slew rate, 120 MHz gain-bandwidth product, 260 mA output current per channel). These devices are applicable only when application requirements demand performance beyond the OP213FS specification. The minimum supply voltage requirement of 9 V must be verified against system design constraints.

Devices Not Recommended: LM2904DT and LM358DT carry obsolete product status and reduced performance specifications. These devices are not suitable for new designs or legacy system upgrades.

Frequently Asked Questions (FAQ)

Q: Can OP213FSZ be used as a direct replacement for OP213FS without circuit modifications?

A: Yes. OP213FSZ maintains identical electrical specifications, package type (8-SOIC), and operating temperature range (-40°C to 85°C) as OP213FS. No circuit modifications are required. OP213FSZ is the active production equivalent and is the preferred substitute.

Q: What are the key differences between OP213FS and LM258ADT?

A: Both devices are dual-channel general-purpose amplifiers in 8-SOIC packages. Primary differences include: OP213FS has 1.2 V/µs slew rate and 3.4 MHz gain-bandwidth product, while LM258ADT has 0.6 V/µs slew rate and 1.1 MHz gain-bandwidth product. OP213FS has 600 nA input bias current; LM258ADT has 20 nA. OP213FS supports 4–36 V supply range; LM258ADT supports 3–30 V. LM258ADT is active and RoHS3 compliant.

Q: Is the 8-SOIC package compatible across all listed substitutes?

A: All substitutes except LM7372MR/NOPB and LM7372MRX/NOPB use standard 8-SOIC packages. LM7372 devices use 8-PowerSOIC packages, which have identical pin pitch and footprint compatibility but include integrated power dissipation features. PCB layout verification is recommended when transitioning to LM7372 variants.

Q: Can LM2904AYDT replace OP213FS in automotive applications?

A: LM2904AYDT is suitable for automotive applications, carrying AEC-Q100 qualification and supporting -40°C to 125°C operating temperature. However, performance specifications differ: slew rate is 0.6 V/µs (versus 1.2 V/µs), gain-bandwidth product is 1.1 MHz (versus 3.4 MHz), and input bias current is 20 nA (versus 600 nA). Substitution is valid only when application requirements are compatible with these reduced specifications.

Q: What is the significance of rail-to-rail output in OP213FS?

A: Rail-to-rail output capability allows the amplifier output to swing to both positive and negative supply rails, maximizing the usable output voltage range. This is particularly valuable in low-voltage applications. LM258ADT, LM2904AYDT, and LM2904YDT do not specify rail-to-rail output, indicating reduced output swing capability. This difference may be significant in applications requiring maximum dynamic range.

Q: Why is input bias current significantly lower in LM258ADT compared to OP213FS?

A: OP213FS has 600 nA input bias current, while LM258ADT has 20 nA. This difference reflects different input stage design topologies. Lower input bias current in LM258ADT reduces errors in high-impedance signal sources and simplifies biasing network design. For applications with low-impedance sources, this difference is negligible.

Q: Are there supply voltage compatibility issues when substituting OP213FS?

A: OP213FS supports 4–36 V supply range. Most substitutes (LM258ADT, LM2904AYDT, LM2904YDT, LM358ADT) support 3–30 V, which is narrower. LM7372 devices require minimum 9 V. Verify that system supply voltages fall within the substitute device specification before implementation.

Q: What does "Not For New Designs" status mean for LM2904DT?

A: "Not For New Designs" indicates the device is in mature phase with limited design support and potential supply constraints. While functional, this device is not recommended for new circuit designs. Active alternatives such as LM2904AYDT or LM2904YDT are preferred.

Q: Is RoHS3 compliance required for OP213FS substitution?

A: OP213FS does not specify RoHS3 compliance status. All recommended active substitutes (OP213FSZ, LM258ADT, LM2904AYDT, LM2904YDT, LM358ADT, LM7372 variants) are RoHS3 compliant. For applications subject to RoHS3 requirements, these compliant alternatives are necessary.

Q: Can LM7372MR/NOPB be used in place of OP213FS for general-purpose amplification?

A: LM7372MR/NOPB is a voltage feedback amplifier with significantly higher performance (3000 V/µs slew rate, 120 MHz gain-bandwidth product). While functionally capable of general-purpose amplification, this device is over-specified for most OP213FS applications and introduces unnecessary cost and complexity. Use LM7372 only when application requirements demand high-speed, high-bandwidth performance.

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