OP227GJ Equivalent & Substitute Parts

Part Overview

The OP227GJ is a general-purpose operational amplifier manufactured by Analog Devices Inc., configured as a dual-circuit (2-circuit) device in a 14-CERDIP package. This component is classified as obsolete, indicating that it is no longer in active production. The OP227GJ delivers a slew rate of 2.8 V/µs and a gain bandwidth product of 8 MHz, making it suitable for general-purpose amplification applications requiring moderate bandwidth and speed characteristics.

Due to its obsolete status, locating equivalent or substitute components becomes necessary for system redesign, maintenance, or new production runs. Substitute parts must maintain functional compatibility through matching amplifier type, circuit count, package form factor, and electrical performance within acceptable operating ranges.

Substiute Parts

OP227GJ

Analog Devices Inc.In Stock: 729OP227GJ Datasheet

Current PartRFQ

UA747CN

Texas InstrumentsIn Stock: 22938UA747CN Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP227GJ is determined by the following critical parameters:

Functional Compatibility Requirements:

• Amplifier Type: General Purpose (matching functional classification)
• Number of Circuits: 2 (dual-channel configuration)
• Package / Case: 14-DIP or 14-CDIP form factor (0.300", 7.62mm pitch)
• Mounting Type: Through Hole (PCB integration method)

Electrical Performance Criteria:

• Slew Rate: Minimum 0.5 V/µs (OP227GJ provides 2.8 V/µs)
• Gain Bandwidth Product: Minimum 1 MHz (OP227GJ provides 8 MHz)
• Current - Input Bias: Maximum 80 nA (OP227GJ provides 15 nA)
• Voltage - Input Offset: Maximum 1 mV (OP227GJ provides 60 µV)
• Voltage - Supply Span: 7 V to 36 V operating range

The UA747CN from Texas Instruments satisfies all functional and electrical compatibility criteria for substitution with the OP227GJ.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: UA747CN

The UA747CN is the designated substitute for the OP227GJ based on functional equivalence and active production status. Both devices are dual general-purpose operational amplifiers in 14-pin DIP packages with through-hole mounting compatibility.

Compliance and Production Status: The UA747CN is manufactured by Texas Instruments and maintains active product status, ensuring continued availability and supply chain reliability. The UA747CN is RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. The OP227GJ, as an obsolete component, no longer receives manufacturing support or quality assurance updates.

Electrical Performance Considerations: The OP227GJ provides superior electrical characteristics in slew rate (2.8 V/µs versus 0.5 V/µs), gain bandwidth product (8 MHz versus 1 MHz), input bias current (15 nA versus 80 nA), and input offset voltage (60 µV versus 1 mV). Applications requiring these enhanced specifications should evaluate whether the UA747CN's performance envelope remains acceptable for the intended circuit function.

The UA747CN operates across a minimum supply voltage of 7 V, compared to the OP227GJ's 8 V minimum, providing broader low-voltage compatibility. The OP227GJ supports extended operating temperature range (-25°C to 85°C) compared to the UA747CN (0°C to 70°C), which may be relevant for industrial or automotive applications.

Package and Pinout Compatibility: Both devices utilize 14-pin DIP packages with 0.300-inch (7.62 mm) pitch, enabling direct PCB footprint compatibility. Pin configuration alignment must be verified against specific application schematics prior to implementation.

Frequently Asked Questions (FAQ)

Q: Can the UA747CN directly replace the OP227GJ in existing circuit designs?

A: The UA747CN is functionally equivalent as a dual general-purpose operational amplifier in a compatible 14-pin DIP package. Direct pin-for-pin substitution is possible from a physical standpoint. However, circuit performance may differ due to variations in slew rate, gain bandwidth product, and input offset voltage. Applications sensitive to these parameters require circuit re-evaluation.

Q: What are the key differences between the OP227GJ and UA747CN?

A: The OP227GJ provides superior slew rate (2.8 V/µs versus 0.5 V/µs), higher gain bandwidth product (8 MHz versus 1 MHz), lower input bias current (15 nA versus 80 nA), and lower input offset voltage (60 µV versus 1 mV). The UA747CN operates at lower minimum supply voltage (7 V versus 8 V). The OP227GJ supports wider operating temperature range (-25°C to 85°C versus 0°C to 70°C).

Q: Why is the OP227GJ classified as obsolete?

A: The OP227GJ is no longer manufactured by Analog Devices Inc. and has been discontinued from active production. Obsolete status indicates that new inventory is not being produced, though existing stock may remain available through component distributors.

Q: Are there any package compatibility concerns when substituting the UA747CN for the OP227GJ?

A: Both devices use 14-pin DIP packages with identical 0.300-inch pitch. The OP227GJ uses a ceramic DIP (CERDIP) package, while the UA747CN uses a plastic DIP (PDIP) package. Both are through-hole mounted and compatible with standard DIP footprints. Thermal characteristics may differ slightly due to package material differences.

Q: What supply voltage range is supported by both devices?

A: The OP227GJ operates from 8 V to 36 V. The UA747CN operates from 7 V to 36 V. The UA747CN provides broader low-voltage compatibility, while both devices support identical maximum supply voltage.

Q: Which device is suitable for extended temperature range applications?

A: The OP227GJ supports operating temperatures from -25°C to 85°C, making it suitable for industrial and extended-range applications. The UA747CN operates from 0°C to 70°C, limiting its use to commercial temperature range applications.

Q: Is the UA747CN compliant with current environmental regulations?

A: The UA747CN is RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components in most jurisdictions.