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OPA227PA Equivalent & Substitute Parts
Part Overview
The OPA227PA is a general-purpose operational amplifier manufactured by Texas Instruments in 8-PDIP through-hole packaging. This device is classified as Last Time Buy, indicating discontinued production with limited remaining inventory of 1445 pieces. The OPA227PA delivers a gain-bandwidth product of 8 MHz with a slew rate of 2.3 V/µs, suitable for general-purpose amplification applications requiring moderate bandwidth and low input offset voltage specifications.
Identification of equivalent and substitute parts is necessary due to the Last Time Buy status. Alternative components with compatible electrical and mechanical parameters ensure design continuity and long-term supply chain reliability.
Substiute Parts
Key Parameters
| Parameter | OPA227PA Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 1 | — |
| Slew Rate | 2.3 | V/µs |
| Gain Bandwidth Product | 8 | MHz |
| Current - Input Bias | 2.5 | nA |
| Voltage - Input Offset | 10 | µV |
| Current - Supply | 3.7 | mA |
| Current - Output / Channel | 45 | mA |
| Voltage - Supply Span (Min) | 5 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature Range | -40 to 85 | °C |
| Mounting Type | Through Hole | — |
| Package / Case | 8-DIP (0.300", 7.62mm) | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution eligibility for the OPA227PA is determined by the following critical parameters:
Primary Compatibility Criteria:
- Amplifier Type: General Purpose
- Number of Circuits: 1
- Package / Case: 8-DIP (0.300", 7.62mm)
- Mounting Type: Through Hole
- Voltage - Supply Span: Minimum 5 V, Maximum 36 V
- Operating Temperature: Support for -40°C to 85°C range
Secondary Performance Parameters:
- Slew Rate: 2.3 V/µs (baseline)
- Gain Bandwidth Product: 8 MHz (baseline)
- Current - Input Bias: 2.5 nA (baseline)
- Voltage - Input Offset: 10 µV (baseline)
Substitute parts are grouped into two categories:
Category A - Direct Functional Equivalents: Parts matching all primary criteria with electrical parameters within acceptable tolerance of the OPA227PA baseline.
Category B - Compatible Alternatives: Parts matching primary criteria with modified electrical performance characteristics suitable for general-purpose amplification but with different bandwidth, slew rate, or input characteristics.
Parameter Comparison
| Parameter | OPA227PA | OPA227UA/2K5 | LT1007IN8#PBF | LT1360CN8#PBF | OP07DN8#PBF | OP07EN8#PBF | OP27EPZ |
|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Amplifier Type | General Purpose | General Purpose | General Purpose | Voltage Feedback | General Purpose | General Purpose | General Purpose |
| Number of Circuits | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Slew Rate (V/µs) | 2.3 | 2.3 | 2.5 | 800 | 0.25 | 0.25 | 2.8 |
| Gain Bandwidth Product (MHz) | 8 | 8 | 8 | 50 | 0.6 | 0.6 | 8 |
| Current - Input Bias (nA) | 2.5 | 2.5 | 15 | 300 | 2 | 1.2 | 10 |
| Voltage - Input Offset (µV) | 10 | 10 | 20 | 300 | 60 | 30 | 10 |
| Current - Supply (mA) | 3.7 | 3.7 | — | 4 | — | — | — |
| Current - Output / Channel (mA) | 45 | 45 | — | 34 | — | — | — |
| Voltage - Supply Span Min (V) | 5 | 5 | 8 | 5 | 6 | 6 | 8 |
| Voltage - Supply Span Max (V) | 36 | 36 | 36 | 30 | 36 | 36 | 36 |
| Operating Temperature (°C) | -40 to 85 | -40 to 85 | -40 to 85 | 0 to 70 | 0 to 70 | 0 to 70 | 0 to 70 |
| Mounting Type | Through Hole | Surface Mount | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Package / Case | 8-DIP (0.300", 7.62mm) | 8-SOIC (0.154", 3.90mm) | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) |
| Product Status | Last Time Buy | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
OPA227UA/2K5 (Texas Instruments)
The OPA227UA/2K5 is the manufacturer-recommended direct equivalent. It provides identical electrical specifications to the OPA227PA with matching slew rate (2.3 V/µs), gain-bandwidth product (8 MHz), input bias current (2.5 nA), and input offset voltage (10 µV). The primary difference is packaging: OPA227UA/2K5 uses 8-SOIC surface-mount format versus the through-hole 8-DIP of the OPA227PA. This part is Active status with 25,100 units in stock, ROHS3 compliant, and supports the full -40°C to 85°C operating temperature range. Selection of this part requires PCB redesign for surface-mount assembly.
OP27EPZ (Analog Devices Inc.)
The OP27EPZ is a general-purpose amplifier with electrical performance closely aligned to the OPA227PA. It provides 8 MHz gain-bandwidth product and 2.8 V/µs slew rate, with 10 nA input bias current and 10 µV input offset voltage. The OP27EPZ maintains 8-DIP through-hole packaging compatible with OPA227PA footprints. Operating temperature range is 0°C to 70°C, which does not extend to the -40°C lower limit of the OPA227PA. This part is Active status with 2,200 units in stock and ROHS3 compliant. Selection is appropriate for applications not requiring extended low-temperature operation.
LT1007IN8#PBF (Analog Devices Inc.)
The LT1007IN8#PBF is a general-purpose amplifier in 8-DIP through-hole packaging with 8 MHz gain-bandwidth product. Input bias current is 15 nA and input offset voltage is 20 µV, representing higher values than the OPA227PA baseline. Slew rate is 2.5 V/µs. Minimum supply voltage is 8 V, exceeding the OPA227PA minimum of 5 V. Operating temperature range is -40°C to 85°C, matching the OPA227PA. This part is Active status with 923 units in stock and ROHS3 compliant. Selection is appropriate for applications tolerating higher input offset voltage and requiring minimum 8 V supply.
OP07DN8#PBF and OP07EN8#PBF (Analog Devices Inc.)
The OP07DN8#PBF and OP07EN8#PBF are general-purpose amplifiers with significantly reduced bandwidth (600 kHz gain-bandwidth product) and slew rate (0.25 V/µs) compared to the OPA227PA. Input bias currents are 2 nA and 1.2 nA respectively, with input offset voltages of 60 µV and 30 µV. Both parts use 8-DIP through-hole packaging and support 6 V to 36 V supply range. Operating temperature range is 0°C to 70°C. These parts are Active status with 969 and 1,073 units in stock respectively, both ROHS3 compliant. Selection is appropriate only for low-bandwidth applications not requiring the 8 MHz performance of the OPA227PA.
LT1360CN8#PBF (Analog Devices Inc.)
The LT1360CN8#PBF is a voltage feedback amplifier with significantly enhanced performance: 50 MHz gain-bandwidth product and 800 V/µs slew rate. Input bias current is 300 nA and input offset voltage is 300 µV, substantially higher than the OPA227PA. Supply voltage range is 5 V to 30 V, with maximum voltage lower than the OPA227PA. Operating temperature range is 0°C to 70°C. This part uses 8-DIP through-hole packaging and is Active status with 1,147 units in stock, ROHS3 compliant. Selection is appropriate for high-speed applications requiring 50 MHz bandwidth but not requiring extended temperature range or low input offset voltage.
Frequently Asked Questions (FAQ)
Q: Can OPA227UA/2K5 replace OPA227PA in existing designs?
A: Electrical substitution is direct. The OPA227UA/2K5 provides identical electrical specifications. However, OPA227UA/2K5 uses 8-SOIC surface-mount packaging while OPA227PA uses 8-DIP through-hole packaging. PCB redesign is required for assembly compatibility.
Q: What is the primary reason to seek OPA227PA substitutes?
A: The OPA227PA is Last Time Buy status, indicating production discontinuation. Remaining inventory is limited to 1,445 units. Substitute identification ensures design continuity for new production runs and long-term supply chain stability.
Q: Which substitute maintains identical electrical performance and through-hole packaging?
A: OP27EPZ provides matching 8 MHz gain-bandwidth product, 2.8 V/µs slew rate, 10 nA input bias current, and 10 µV input offset voltage in 8-DIP through-hole packaging. Operating temperature range is 0°C to 70°C, not extending to -40°C.
Q: Can OP07DN8#PBF or OP07EN8#PBF replace OPA227PA?
A: These parts are not suitable for direct replacement. Both offer only 600 kHz gain-bandwidth product and 0.25 V/µs slew rate, representing 13-fold reduction in bandwidth and 9-fold reduction in slew rate compared to OPA227PA. Selection is appropriate only for applications not requiring 8 MHz performance.
Q: What is the supply voltage compatibility range for substitutes?
A: OPA227PA supports 5 V to 36 V. OPA227UA/2K5 and LT1360CN8#PBF support 5 V minimum. LT1007IN8#PBF requires 8 V minimum. OP07DN8#PBF and OP07EN8#PBF require 6 V minimum. LT1360CN8#PBF maximum is 30 V, lower than the OPA227PA 36 V maximum.
Q: Which substitutes support the full -40°C to 85°C operating temperature range?
A: OPA227UA/2K5 and LT1007IN8#PBF support -40°C to 85°C. OP27EPZ, LT1360CN8#PBF, OP07DN8#PBF, and OP07EN8#PBF support only 0°C to 70°C.
Q: Are all substitutes ROHS3 compliant?
A: Yes. All listed substitutes are ROHS3 compliant, matching the OPA227PA compliance status.
Q: What is the inventory status of available substitutes?
A: OPA227UA/2K5 has 25,100 units in stock. OP27EPZ has 2,200 units. LT1360CN8#PBF has 1,147 units. LT1007IN8#PBF has 923 units. OP07DN8#PBF has 969 units. OP07EN8#PBF has 1,073 units. All substitutes are Active status with established supply.
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