OPA2227P Equivalent & Substitute Parts

Part Overview

The OPA2227P is a general-purpose operational amplifier featuring two independent circuits in an 8-PDIP through-hole package, manufactured by Texas Instruments. This device operates across a wide supply voltage range of 5V to 36V with an operating temperature range of -40°C to 85°C. The OPA2227P is designated as Last Time Buy, indicating discontinued production status. Identifying equivalent and substitute parts is essential for design continuity, inventory management, and long-term product support in applications requiring dual-channel amplification.

Substiute Parts

OPA2227P

Texas InstrumentsIn Stock: 2389OPA2227P Datasheet

Current PartRFQ

OPA2227U/2K5

Texas InstrumentsIn Stock: 3485OPA2227U/2K5 Datasheet

MFR RecommendedRFQ

LT1124ACN8#PBF

Analog Devices Inc.In Stock: 2978LT1124ACN8#PBF Datasheet

MFR RecommendedRFQ

LT1124CN8#PBF

Analog Devices Inc.In Stock: 2210LT1124CN8#PBF Datasheet

MFR RecommendedRFQ

MUSES8820D

Nisshinbo Micro Devices Inc.In Stock: 2985MUSES8820D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA2227P is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Number of circuits: 2 (dual-channel requirement)
• Package type: 8-DIP through-hole configuration
• Supply voltage range: Minimum 5V, Maximum 36V
• Operating temperature range: -40°C to 85°C
• Amplifier classification: General Purpose

Secondary Compatibility Parameters:

• Slew rate: 2.3 V/µs or higher
• Gain bandwidth product: 8 MHz or higher
• Input bias current: 2.5 nA or lower
• Input offset voltage: 5 µV or lower
• Output current per channel: 45 mA or higher
• Supply current: 3.7 mA per channel or lower

Substitute parts are grouped into two categories based on package configuration: through-hole 8-DIP packages (direct pin-compatible substitutes) and surface-mount alternatives for applications permitting package conversion.

Parameter Comparison

Engineering Selection Recommendations

OPA2227U/2K5 (Texas Instruments)

The OPA2227U/2K5 is the manufacturer-recommended direct electrical equivalent to the OPA2227P. It maintains identical electrical specifications including slew rate, gain bandwidth product, input bias current, input offset voltage, and supply current. The primary distinction is packaging: OPA2227U/2K5 is supplied in 8-SOIC surface-mount configuration rather than through-hole DIP. This substitute is appropriate for new designs or PCB redesigns accommodating surface-mount assembly. Product status is Active, ensuring long-term availability. RoHS3 compliance and REACH unaffected status match the original part.

LT1124ACN8#PBF and LT1124CN8#PBF (Analog Devices Inc.)

Both LT1124 variants are through-hole 8-DIP packages providing pin-compatible physical substitution. These parts offer enhanced performance characteristics: slew rate of 4.5 V/µs (versus 2.3 V/µs), gain bandwidth product of 12.5 MHz (versus 8 MHz), and reduced supply current of 2.3 mA per channel (versus 3.7 mA). The LT1124ACN8#PBF operates across 0°C to 70°C, while LT1124CN8#PBF operates across the same temperature range. Both require minimum supply voltage of 8V (versus 5V for OPA2227P) and maximum supply voltage of 44V (versus 36V). These parts are suitable for applications where the higher minimum supply voltage is acceptable and where enhanced performance is beneficial. Product status is Active for both variants. RoHS3 compliance is confirmed.

MUSES8820D (Nisshinbo Micro Devices Inc.)

The MUSES8820D is a through-hole 8-DIP audio amplifier with dual circuits. It provides superior slew rate of 5 V/µs and gain bandwidth product of 11 MHz. However, this part exhibits higher input bias current (100 nA versus 2.5 nA) and significantly higher input offset voltage (300 µV versus 5 µV), making it suitable only for audio applications where these specifications are acceptable. Supply current is 8 mA (versus 3.7 mA per channel), and output current per channel is 50 mA (versus 45 mA). Operating temperature range matches the original part (-40°C to 85°C). Maximum supply voltage is 32V (versus 36V). Product status is Active. This substitute is appropriate only for audio-specific applications.

Selection Basis:

• OPA2227U/2K5: Recommended for new designs permitting surface-mount conversion or when surface-mount assembly is standard practice.
• LT1124ACN8#PBF or LT1124CN8#PBF: Recommended for through-hole designs where minimum supply voltage of 8V is available and enhanced performance is acceptable.
• MUSES8820D: Recommended exclusively for audio applications where input offset voltage and bias current specifications are non-critical.

All substitute parts maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original OPA2227P.

Frequently Asked Questions (FAQ)

Q1: Can OPA2227U/2K5 be used as a direct replacement for OPA2227P in existing PCBs?

A: No. OPA2227U/2K5 uses 8-SOIC surface-mount packaging, while OPA2227P uses 8-DIP through-hole packaging. Physical PCB layout and footprint are incompatible. OPA2227U/2K5 requires PCB redesign or use of an adapter carrier. For through-hole applications, use LT1124ACN8#PBF or LT1124CN8#PBF instead.

Q2: What are the key differences between LT1124ACN8#PBF and LT1124CN8#PBF?

A: Both parts are pin-compatible 8-DIP packages with identical electrical performance. The primary difference is operating temperature range: LT1124ACN8#PBF is rated for 0°C to 70°C, while LT1124CN8#PBF is also rated for 0°C to 70°C. Input offset voltage differs slightly: LT1124ACN8#PBF specifies 20 µV maximum, while LT1124CN8#PBF specifies 25 µV maximum. Both are suitable for OPA2227P replacement in through-hole applications.

Q3: Is MUSES8820D suitable for general-purpose amplifier applications?

A: MUSES8820D is classified as an audio amplifier, not a general-purpose amplifier. While it provides dual circuits in 8-DIP packaging, its input offset voltage of 300 µV and input bias current of 100 nA are significantly higher than OPA2227P specifications. Use MUSES8820D only in audio applications where these specifications are acceptable. For general-purpose applications, use LT1124 variants or OPA2227U/2K5.

Q4: What is the minimum supply voltage requirement for LT1124 substitutes?

A: LT1124ACN8#PBF and LT1124CN8#PBF require minimum supply voltage of 8V, compared to 5V for OPA2227P. Designs operating at 5V to 7.9V supply voltage cannot use LT1124 variants. Verify supply voltage availability before selecting these substitutes.

Q5: Are all substitute parts RoHS3 compliant?

A: Yes. OPA2227U/2K5, LT1124ACN8#PBF, LT1124CN8#PBF, and MUSES8820D are all RoHS3 compliant or RoHS compliant, matching the regulatory status of OPA2227P. All parts are REACH unaffected.

Q6: Which substitute offers the best performance improvement over OPA2227P?

A: LT1124 variants offer the most significant performance improvement: slew rate increases from 2.3 V/µs to 4.5 V/µs, gain bandwidth product increases from 8 MHz to 12.5 MHz, and supply current decreases from 3.7 mA to 2.3 mA per channel. However, these improvements require minimum supply voltage of 8V. MUSES8820D offers the highest slew rate of 5 V/µs but is limited to audio applications.

Q7: Can OPA2227P be replaced with a single-channel amplifier?

A: No. OPA2227P contains two independent circuits. Any replacement must also provide dual-channel functionality. All listed substitutes maintain the two-circuit requirement.

Q8: What is the inventory status of substitute parts?

A: OPA2227U/2K5 has 3377 pieces in stock. LT1124ACN8#PBF has 2900 pieces in stock. LT1124CN8#PBF has 2110 pieces in stock. MUSES8820D has 2945 pieces in stock. All substitutes are currently available.