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LT1208CS8#TRPBF Equivalent & Substitute Parts
Part Overview
The LT1208CS8#TRPBF is a general purpose operational amplifier manufactured by Analog Devices Inc., configured as a dual-channel (2 circuit) device in an 8-SOIC surface mount package. This part is classified as Active product status and is designed for applications requiring moderate bandwidth and slew rate performance in compact form factors.
Substitute parts become necessary when the primary part experiences supply constraints, when alternative sourcing is required for cost optimization, or when design flexibility permits selection from equivalent alternatives that meet the same electrical and mechanical specifications. The parts listed below share compatible package geometry, pin configuration, and core electrical parameters with the LT1208CS8#TRPBF.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 2 | — |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| Voltage - Supply Span (Min) | 5 | V |
| Voltage - Supply Span (Max) | 30 | V |
| Operating Temperature | 0 to 70 | °C |
| Current - Output / Channel | 40 | mA |
| Slew Rate | 400 | V/µs |
| Gain Bandwidth Product | 45 | MHz |
| Current - Input Bias | 4 | µA |
| Voltage - Input Offset | 1 | mV |
| Current - Supply | 7 (x2 Channels) | mA |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution compatibility for the LT1208CS8#TRPBF is determined by the following critical parameters:
Package Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure mechanical and electrical pin compatibility with existing PCB layouts.
Dual-Channel Configuration: All substitutes must contain exactly 2 operational amplifier circuits to maintain functional equivalence in dual-channel applications.
Supply Voltage Range: Substitute parts must support a minimum supply voltage of 5 V and a maximum supply voltage of 30 V to operate within the LT1208CS8#TRPBF operating envelope.
Output Current Capability: Substitute parts must deliver a minimum of 40 mA per channel to satisfy load driving requirements.
Surface Mount Technology: All substitutes must be surface mount devices compatible with automated assembly processes.
The following substitute parts meet these core compatibility criteria and are grouped by manufacturer:
Analog Devices Inc.: OP221GSZ, OP221GSZ-REEL7
Diodes Incorporated: AS358AMTR-E1, AS358AMTR-G1, AS358MTR-E1, AS358MTR-G1
Rohm Semiconductor: BA4558RFJ-GE2, BA4560FJ-GE2, BA4560RFJ-GE2
STMicroelectronics: LM258ADT
Parameter Comparison
| Part Number | Manufacturer | Packaging | Number of Circuits | Voltage Supply Min (V) | Voltage Supply Max (V) | Current - Output / Channel (mA) | Operating Temp (°C) | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| LT1208CS8#TRPBF | Analog Devices Inc. | Tape & Reel (TR) | 2 | 5 | 30 | 40 | 0 to 70 | Active | ROHS3 Compliant |
| OP221GSZ | Analog Devices Inc. | Tube | 2 | 5 | 30 | — | -55 to 125 | Active | ROHS3 Compliant |
| OP221GSZ-REEL7 | Analog Devices Inc. | Tape & Reel (TR) | 2 | 5 | 30 | — | -55 to 125 | Active | ROHS3 Compliant |
| AS358AMTR-E1 | Diodes Incorporated | Tape & Reel (TR) | 2 | 3 | 36 | 40 | -40 to 85 | Active | ROHS3 Compliant |
| AS358AMTR-G1 | Diodes Incorporated | Tape & Reel (TR) | 2 | 3 | 36 | 40 | -40 to 85 | Active | ROHS3 Compliant |
| AS358MTR-E1 | Diodes Incorporated | Cut Tape (CT) & Digi-Reel® | 2 | 3 | 36 | 40 | -40 to 85 | Active | ROHS3 Compliant |
| AS358MTR-G1 | Diodes Incorporated | Tape & Reel (TR) | 2 | 3 | 36 | 40 | -40 to 85 | Active | ROHS3 Compliant |
| BA4558RFJ-GE2 | Rohm Semiconductor | Cut Tape (CT) & Digi-Reel® | 2 | 8 | 30 | — | -40 to 105 | Active | ROHS3 Compliant |
| BA4560FJ-GE2 | Rohm Semiconductor | Cut Tape (CT) & Digi-Reel® | 2 | 8 | 30 | 25 | -40 to 85 | Not For New Designs | ROHS3 Compliant |
| BA4560RFJ-GE2 | Rohm Semiconductor | Cut Tape (CT) & Digi-Reel® | 2 | 8 | 30 | — | -40 to 105 | Active | ROHS3 Compliant |
| LM258ADT | STMicroelectronics | Cut Tape (CT) & Digi-Reel® | 2 | 3 | 30 | 40 | -40 to 105 | Active | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Substitutes (Recommended for New Designs):
The AS358AMTR-E1, AS358AMTR-G1, AS358MTR-E1, and AS358MTR-G1 devices manufactured by Diodes Incorporated are suitable substitutes. These parts maintain Active product status, are ROHS3 compliant, and support the required 8-SOIC package with dual-channel configuration and 40 mA output current per channel. The extended supply voltage range (3 V to 36 V) provides additional design flexibility compared to the LT1208CS8#TRPBF.
The LM258ADT from STMicroelectronics is an Active product with ROHS3 compliance, AEC-Q100 automotive qualification, and identical output current capability (40 mA per channel). This part is suitable for applications requiring automotive-grade components.
Secondary Substitutes (Limited Application):
The OP221GSZ and OP221GSZ-REEL7 from Analog Devices Inc. are Active products with ROHS3 compliance and extended operating temperature range (-55°C to 125°C). However, output current specifications are not provided for these parts, requiring verification against application requirements.
The BA4560RFJ-GE2 from Rohm Semiconductor is an Active product with ROHS3 compliance and extended operating temperature range (-40°C to 105°C). However, output current specifications are not provided.
Not Recommended:
The BA4560FJ-GE2 carries a "Not For New Designs" product status designation and should not be selected for new applications.
Frequently Asked Questions (FAQ)
Q: Can the OP221GSZ be used as a direct replacement for the LT1208CS8#TRPBF?
A: The OP221GSZ shares the same 8-SOIC package, dual-channel configuration, and supply voltage range (5 V to 30 V). However, the OP221GSZ is supplied in Tube packaging rather than Tape & Reel. Output current specifications are not provided for the OP221GSZ, requiring verification against application load requirements before substitution.
Q: What is the difference between AS358AMTR-E1 and AS358AMTR-G1?
A: Both parts are manufactured by Diodes Incorporated with identical electrical specifications. The primary difference is the Moisture Sensitivity Level (MSL): AS358AMTR-E1 has MSL 1 (Unlimited), while AS358AMTR-G1 has MSL 3 (168 Hours). MSL 1 parts have no moisture sensitivity restrictions, while MSL 3 parts require controlled storage conditions and have a 168-hour floor life after moisture exposure.
Q: Are the Rohm Semiconductor BA4560 series parts compatible with the LT1208CS8#TRPBF?
A: The BA4560RFJ-GE2 shares the 8-SOIC package and dual-channel configuration. However, the minimum supply voltage is 8 V, which exceeds the LT1208CS8#TRPBF minimum of 5 V. This part is suitable only for applications with supply voltages of 8 V or higher. Output current specifications are not provided for this part.
Q: What packaging options are available for substitutes?
A: Substitute parts are available in multiple packaging formats: Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, and Tube. All maintain the same 8-SOIC physical package geometry. Selection depends on assembly process requirements and inventory management preferences.
Q: Does the LM258ADT offer any advantages over other substitutes?
A: The LM258ADT includes AEC-Q100 automotive qualification, making it suitable for automotive applications. It maintains Active product status, ROHS3 compliance, 40 mA output current per channel, and an extended operating temperature range (-40°C to 105°C).
Q: Why are output current specifications missing for some substitute parts?
A: Output current specifications are not provided in the available technical data for OP221GSZ, OP221GSZ-REEL7, BA4558RFJ-GE2, and BA4560RFJ-GE2. Applications requiring specific output current capability must verify these parameters through manufacturer datasheets before substitution.
Q: Can I use a substitute part with a lower minimum supply voltage?
A: Yes. Parts with lower minimum supply voltage requirements (such as AS358 series at 3 V minimum) are compatible with the LT1208CS8#TRPBF in applications using 5 V to 30 V supplies. The lower minimum voltage provides additional design flexibility without affecting operation within the LT1208CS8#TRPBF supply range.
Q: What is the significance of "Not For New Designs" status?
A: The BA4560FJ-GE2 carries "Not For New Designs" status, indicating that the manufacturer does not recommend this part for new product development. Existing designs using this part may continue, but new applications should select from Active status alternatives.
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