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OP27GS-REEL Equivalent & Substitute Parts
Part Overview
The OP27GS-REEL is a general-purpose operational amplifier manufactured by Analog Devices Inc., housed in an 8-SOIC surface mount package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. The OP27GS-REEL operates across a supply voltage range of 8V to 36V with an operating temperature range of -40°C to 85°C, making it suitable for precision analog signal processing applications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 1 | — |
| Slew Rate | 2.8 | V/µs |
| Gain Bandwidth Product | 8 | MHz |
| Current - Input Bias | 15 | nA |
| Voltage - Input Offset | 30 | µV |
| Voltage - Supply Span (Min) | 8 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | -40 to 85 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the OP27GS-REEL is determined by electrical and mechanical compatibility across the following critical parameters:
Primary Substitution Criteria:
- Amplifier Type: General Purpose
- Number of Circuits: 1
- Package / Case: 8-SOIC (0.154", 3.90mm Width)
- Mounting Type: Surface Mount
- Voltage - Supply Span: 8V minimum to 36V maximum
- Operating Temperature Range: -40°C to 85°C
Electrical Performance Parameters:
- Slew Rate: 2.8V/µs (baseline)
- Gain Bandwidth Product: 8 MHz (baseline)
- Current - Input Bias: 15 nA (baseline)
- Voltage - Input Offset: 30 µV (baseline)
Substitute parts are grouped into two categories:
Category 1: Direct Equivalents — Parts maintaining identical electrical specifications and packaging, differing only in product status (Active vs. Obsolete) or packaging format (Reel vs. Tube).
Category 2: Functional Alternatives — Parts with enhanced electrical performance (higher slew rate, higher gain bandwidth product, lower input offset voltage) that operate within the same supply voltage and temperature ranges, maintaining mechanical compatibility.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Slew Rate (V/µs) | GBW (MHz) | Input Bias (nA) | Input Offset (µV) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|---|
| OP27GS-REEL | Analog Devices | Obsolete | 2.8 | 8 | 15 | 30 | 8 | 36 | -40 to 85 | 8-SOIC | — |
| OP27GSZ-REEL | Analog Devices | Active | 2.8 | 8 | 15 | 30 | 8 | 36 | -40 to 85 | 8-SOIC | ROHS3 Compliant |
| LT1037CS8#PBF | Analog Devices | Active | 15 | 60 | 15 | 20 | 8 | 36 | 0 to 70 | 8-SOIC | ROHS3 Compliant |
| LT1037CS8#TRPBF | Analog Devices | Active | 15 | 60 | 15 | 20 | 8 | 36 | 0 to 70 | 8-SOIC | ROHS3 Compliant |
| LT1037IS8 | Analog Devices | Active | 15 | 60 | 15 | 20 | 8 | 36 | -40 to 85 | 8-SOIC | ROHS3 Compliant |
| LT1037IS8#PBF | Analog Devices | Active | 15 | 60 | 15 | 20 | 8 | 36 | -40 to 85 | 8-SOIC | ROHS3 Compliant |
| OPA227U | Texas Instruments | Active | 2.3 | 8 | 2.5 | 5 | 5 | 36 | -40 to 85 | 8-SOIC | ROHS3 Compliant |
| OPA227U/2K5 | Texas Instruments | Active | 2.3 | 8 | 2.5 | 5 | 5 | 36 | -40 to 85 | 8-SOIC | ROHS3 Compliant |
| OPA227UA | Texas Instruments | Active | 2.3 | 8 | 2.5 | 10 | 5 | 36 | -40 to 85 | 8-SOIC | ROHS3 Compliant |
| OPA27GU | Texas Instruments | Active | 1.9 | 8 | 15 | 25 | 8 | 44 | -40 to 85 | 8-SOIC | ROHS3 Compliant |
| OPA27GU/2K5 | Texas Instruments | Active | 1.9 | 8 | 15 | 25 | 8 | 44 | -40 to 85 | 8-SOIC | ROHS3 Compliant |
Engineering Selection Recommendations
Direct Replacement (Recommended Primary Option):
The OP27GSZ-REEL is the direct equivalent of the OP27GS-REEL. This part maintains identical electrical specifications and mechanical packaging while offering Active product status and ROHS3 compliance. The OP27GSZ-REEL is available in Digi-Reel® format, providing supply chain continuity for the obsolete OP27GS-REEL.
Alternative Selections Based on Application Requirements:
For Extended Temperature Range (-40°C to 85°C) with Enhanced Performance:
The LT1037IS8 and LT1037IS8#PBF offer higher slew rate (15V/µs) and gain bandwidth product (60 MHz) while maintaining the full operating temperature range of -40°C to 85°C. These parts are suitable for applications requiring faster transient response. Both are ROHS3 compliant and Active status.
For Lower Supply Voltage Minimum (5V) with Comparable Performance:
The OPA227U, OPA227U/2K5, and OPA227UA series from Texas Instruments provide lower input bias current (2.5 nA) and lower input offset voltage (5µV to 10µV) with a reduced minimum supply voltage of 5V. These parts maintain the 8 MHz gain bandwidth product and -40°C to 85°C operating temperature range. All are ROHS3 compliant and Active status.
For Extended Supply Voltage Maximum (44V):
The OPA27GU and OPA27GU/2K5 extend the maximum supply voltage to 44V while maintaining input bias current of 15 nA and the full -40°C to 85°C operating temperature range. These parts are ROHS3 compliant and Active status.
For Restricted Temperature Range (0°C to 70°C) with Enhanced Performance:
The LT1037CS8#PBF and LT1037CS8#TRPBF offer higher performance specifications (15V/µs slew rate, 60 MHz gain bandwidth product) for applications operating within 0°C to 70°C. These parts are suitable for commercial-grade applications with enhanced dynamic performance requirements.
Frequently Asked Questions (FAQ)
Q: Can the OP27GSZ-REEL be used as a direct drop-in replacement for the OP27GS-REEL?
A: Yes. The OP27GSZ-REEL is electrically and mechanically identical to the OP27GS-REEL. Both parts feature identical slew rate (2.8V/µs), gain bandwidth product (8 MHz), input bias current (15 nA), input offset voltage (30 µV), supply voltage range (8V to 36V), operating temperature range (-40°C to 85°C), and 8-SOIC packaging. The primary difference is product status: OP27GSZ-REEL is Active and ROHS3 compliant.
Q: What is the difference between the LT1037 series and the OP27 series?
A: The LT1037 series provides enhanced performance with higher slew rate (15V/µs vs. 2.8V/µs) and higher gain bandwidth product (60 MHz vs. 8 MHz). Both series maintain 15 nA input bias current and 8-SOIC packaging. The LT1037 series is suitable for applications requiring faster transient response. Temperature range varies by specific part number: LT1037CS8 variants operate 0°C to 70°C, while LT1037IS8 variants operate -40°C to 85°C.
Q: Are the OPA227 series parts from Texas Instruments compatible with the OP27GS-REEL?
A: The OPA227 series is mechanically compatible (8-SOIC package) and operates within the same temperature range (-40°C to 85°C). However, the OPA227 series has a lower minimum supply voltage (5V vs. 8V) and superior input characteristics: lower input bias current (2.5 nA vs. 15 nA) and lower input offset voltage (5µV to 10µV vs. 30µV). The slew rate and gain bandwidth product are comparable (2.3V/µs and 8 MHz). Selection depends on whether the lower supply voltage minimum and improved input characteristics are beneficial for the application.
Q: What packaging formats are available for substitute parts?
A: Substitute parts are available in multiple packaging formats: Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), and Tube. The OP27GSZ-REEL is available in Digi-Reel® format, matching the original reel-based supply method. The LT1037 series is available in Tube and Tape & Reel formats. The OPA227 and OPA27 series are available in Cut Tape & Digi-Reel® and Tube formats. Selection should align with production assembly requirements and inventory management practices.
Q: Which substitute part offers the best input offset voltage performance?
A: The OPA227U and OPA227U/2K5 offer the lowest input offset voltage at 5µV, compared to 30µV for the OP27GS-REEL and 20µV for the LT1037 series. The OPA227UA offers 10µV input offset voltage. These lower values are beneficial for precision analog applications requiring minimal DC offset errors.
Q: Can I use the LT1037CS8#PBF in applications requiring -40°C operation?
A: No. The LT1037CS8#PBF operates within 0°C to 70°C temperature range and is not suitable for applications requiring -40°C operation. For full -40°C to 85°C temperature range compatibility, use LT1037IS8, LT1037IS8#PBF, OPA227U, OPA227U/2K5, OPA227UA, OPA27GU, or OPA27GU/2K5.
Q: What is the significance of ROHS3 compliance for substitute part selection?
A: ROHS3 compliance indicates conformance to Restriction of Hazardous Substances Directive 3, which restricts the use of specific hazardous materials in electrical and electronic equipment. All Active substitute parts listed are ROHS3 compliant, making them suitable for applications and markets requiring environmental compliance. The original OP27GS-REEL does not specify ROHS status due to its Obsolete classification.
Q: Are there inventory considerations when selecting substitute parts?
A: Yes. Current inventory levels vary significantly: OP27GSZ-REEL (44,113 pcs), OPA27GU/2K5 (10,400 pcs), OPA227U (5,593 pcs), LT1037IS8#PBF (3,845 pcs), LT1037IS8 (3,600 pcs), and LT1037CS8#PBF (1,470 pcs). For high-volume production requirements, OP27GSZ-REEL and OPA27GU/2K5 offer the highest availability. Inventory levels should be verified at the time of procurement.
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