OPA2227PA Equivalent & Substitute Parts

Part Overview

The OPA2227PA is a general-purpose operational amplifier manufactured by Texas Instruments, featuring dual circuits in an 8-DIP through-hole package. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The OPA2227PA operates across a wide supply voltage range (5V to 36V) and is suitable for applications requiring low input bias current and low input offset voltage characteristics. Due to its Last Time Buy status, identifying equivalent substitute parts is essential for design continuity and long-term component sourcing.

Substiute Parts

OPA2227PA

Texas InstrumentsIn Stock: 2028OPA2227PA Datasheet

Current PartRFQ

OPA2227UA/2K5

Texas InstrumentsIn Stock: 21364OPA2227UA/2K5 Datasheet

MFR RecommendedRFQ

MUSES8820D

Nisshinbo Micro Devices Inc.In Stock: 2985MUSES8820D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA2227PA is determined by strict alignment of electrical and mechanical parameters. The following criteria establish valid substitute relationships:

Primary Substitution Criteria:

• Dual-circuit configuration (2 circuits minimum)
• 8-pin DIP package format (through-hole mounting)
• Supply voltage range compatibility (minimum 5V, maximum 36V)
• Input bias current ≤ 2.5 nA
• Input offset voltage ≤ 10 µV
• Slew rate ≥ 2.3 V/µs
• Gain bandwidth product ≥ 8 MHz
• Output current per channel ≥ 45 mA
• Operating temperature range -40°C to 85°C

Identified Substitutes:

OPA2227UA/2K5 (Texas Instruments): Identical electrical specifications to OPA2227PA. Differs only in packaging format (8-SOIC surface mount vs. 8-DIP through hole) and product status (Active vs. Last Time Buy). Electrical performance is equivalent; mechanical mounting differs.

MUSES8820D (Nisshinbo Micro Devices Inc.): Meets core substitution criteria with enhanced performance in specific parameters. Operates within compatible supply voltage range (7V to 32V, overlapping with OPA2227PA range). Exceeds minimum requirements for slew rate (5V/µs vs. 2.3V/µs), gain bandwidth product (11 MHz vs. 8 MHz), and output current (50 mA vs. 45 mA). Classified as Audio Amplifier rather than General Purpose; however, electrical parameters remain compatible. Input bias current (100 nA) and input offset voltage (300 µV) exceed OPA2227PA specifications but remain within acceptable operational ranges for general-purpose applications.

Parameter Comparison

Engineering Selection Recommendations

OPA2227UA/2K5 Selection Criteria: Select OPA2227UA/2K5 when design requirements permit surface-mount technology. This substitute maintains identical electrical specifications to OPA2227PA while offering Active product status, ensuring long-term availability and supply chain continuity. Both devices are ROHS3 compliant and manufactured by Texas Instruments, maintaining design consistency. The 8-SOIC package requires PCB redesign for surface-mount assembly but provides space efficiency benefits. Inventory availability (21,305 pcs) exceeds OPA2227PA stock levels (2,005 pcs).

MUSES8820D Selection Criteria: Select MUSES8820D when through-hole mounting is required and enhanced performance parameters are acceptable. This substitute maintains 8-DIP package compatibility with OPA2227PA, eliminating PCB redesign requirements. MUSES8820D offers superior slew rate and gain bandwidth product performance, suitable for applications requiring faster signal processing. The device is classified as Active with robust inventory availability (2,945 pcs). Input bias current and input offset voltage exceed OPA2227PA specifications; applications sensitive to these parameters require circuit-level evaluation. Supply voltage minimum (7V) is higher than OPA2227PA (5V); designs operating below 7V are incompatible. Both devices maintain -40°C to 85°C operating temperature range and RoHS compliance.

Direct Replacement (Same Package): MUSES8820D provides direct mechanical and electrical substitution for through-hole applications without PCB modification.

Package-Change Substitution: OPA2227UA/2K5 requires PCB redesign but maintains identical electrical performance and manufacturer consistency.

Frequently Asked Questions (FAQ)

Q: Can OPA2227UA/2K5 replace OPA2227PA without circuit modification?

A: OPA2227UA/2K5 provides identical electrical specifications and can replace OPA2227PA functionally. However, the package format differs (8-SOIC surface mount vs. 8-DIP through hole), requiring PCB redesign and assembly process changes. No circuit-level modifications are necessary if PCB layout accommodates the surface-mount package.

Q: Is MUSES8820D a direct pin-compatible replacement?

A: MUSES8820D is pin-compatible in 8-DIP package format and requires no PCB redesign. However, electrical parameter differences exist: input bias current (100 nA vs. 2.5 nA) and input offset voltage (300 µV vs. 10 µV) are higher. Applications with stringent noise or precision requirements must evaluate circuit-level impact. Supply voltage minimum (7V) is higher; designs operating at 5V or 6V are incompatible.

Q: What is the minimum supply voltage for MUSES8820D?

A: MUSES8820D requires minimum 7V supply voltage, compared to OPA2227PA minimum of 5V. Designs operating at 5V or 6V cannot use MUSES8820D as a substitute.

Q: Are all substitute parts RoHS compliant?

A: Yes. OPA2227PA is ROHS3 compliant, OPA2227UA/2K5 is ROHS3 compliant, and MUSES8820D is RoHS compliant. All substitutes meet environmental compliance requirements.

Q: Which substitute offers the best long-term availability?

A: OPA2227UA/2K5 offers the highest inventory level (21,305 pcs) and Active product status, providing superior long-term supply chain security compared to OPA2227PA (Last Time Buy status, 2,005 pcs) and MUSES8820D (Active status, 2,945 pcs).

Q: Can MUSES8820D be used in precision measurement applications?

A: MUSES8820D input offset voltage (300 µV) is 30 times higher than OPA2227PA (10 µV). Applications requiring input offset voltage ≤ 10 µV must use OPA2227PA or OPA2227UA/2K5. MUSES8820D is suitable for general-purpose and audio applications where this specification is acceptable.

Q: What are the moisture sensitivity differences between substitutes?

A: OPA2227PA has no moisture sensitivity specification (Not Applicable). OPA2227UA/2K5 has MSL 3 (168 hours), requiring controlled storage and handling. MUSES8820D has MSL 2 (1 year), offering more relaxed moisture control requirements. Surface-mount devices (OPA2227UA/2K5) typically require stricter moisture management than through-hole devices.