OP400HS Equivalent & Substitute Parts

Part Overview

The OP400HS is a general-purpose operational amplifier integrated circuit manufactured by Analog Devices Inc., configured as a 4-circuit differential amplifier in a 16-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of functionally equivalent active alternatives for new designs and production applications. The OP400HS operates across a supply voltage range of 6V to 36V with an operating temperature range of -40°C to 85°C, making it suitable for industrial and commercial applications requiring general-purpose amplification.

Substiute Parts

OP400HS

Analog Devices Inc.In Stock: 1352OP400HS Datasheet

Current PartRFQ

OP400HSZ

Analog Devices Inc.In Stock: 6493OP400HSZ Datasheet

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AD8624ACPZ-RL

Analog Devices Inc.In Stock: 792AD8624ACPZ-RL Datasheet

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LT1114IS#PBF

Analog Devices Inc.In Stock: 1205LT1114IS#PBF Datasheet

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LT1114IS#TRPBF

Analog Devices Inc.In Stock: 1459LT1114IS#TRPBF Datasheet

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LT1114S#PBF

Analog Devices Inc.In Stock: 1308LT1114S#PBF Datasheet

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LT1114S#TRPBF

Analog Devices Inc.In Stock: 2139LT1114S#TRPBF Datasheet

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LT1125MPSW#PBF

Analog Devices Inc.In Stock: 1917LT1125MPSW#PBF Datasheet

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LT1125MPSW#TRPBF

Analog Devices Inc.In Stock: 2059LT1125MPSW#TRPBF Datasheet

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TS514AIDT

STMicroelectronicsIn Stock: 1450TS514AIDT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP400HS is determined by the following critical parameters: number of circuits (4), amplifier type (general purpose), mounting type (surface mount), supply voltage range compatibility, operating temperature range, and package form factor. The substitute parts are grouped into two categories based on their electrical and mechanical compatibility with the OP400HS.

Direct Packaging Substitute (Active Product): The OP400HSZ represents a direct substitute with identical electrical specifications and package dimensions. This part maintains the same 16-SOIC form factor, supply voltage range (6V to 36V), and operating temperature range (-40°C to 85°C). The primary difference is product status (active versus obsolete) and packaging format (tube versus unspecified original packaging).

Functional Equivalents with Parameter Variations: The LT1114 series (LT1114IS#PBF, LT1114IS#TRPBF, LT1114S#PBF, LT1114S#TRPBF) and LT1125MPSW series (LT1125MPSW#PBF, LT1125MPSW#TRPBF) provide functional equivalence as 4-circuit general-purpose amplifiers in surface mount packages. These parts exhibit different electrical characteristics including slew rate, gain bandwidth product, input bias current, and supply current specifications. The LT1114 series operates with a wider minimum supply voltage (2V versus 6V) and higher gain bandwidth product (750 kHz versus 500 kHz). The LT1125MPSW series provides significantly enhanced performance with higher slew rate (4.5V/µs versus 0.15V/µs) and gain bandwidth product (12.5 MHz versus 500 kHz), suitable for applications requiring faster response characteristics.

Alternative Manufacturer Substitute: The TS514AIDT from STMicroelectronics provides a 4-circuit general-purpose amplifier in a 14-SOIC package. This part differs in package pin count and electrical performance characteristics while maintaining surface mount configuration and general-purpose amplifier functionality.

Enhanced Performance Substitute: The AD8624ACPZ-RL from Analog Devices Inc. offers rail-to-rail output capability with improved electrical performance characteristics including lower input bias current (45 pA versus 750 pA) and lower input offset voltage (10 µV versus 80 µV). This part is packaged in a 16-WQFN form factor rather than 16-SOIC.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: OP400HSZ

The OP400HSZ is the direct active equivalent of the OP400HS. This part maintains identical electrical specifications and package dimensions while offering active product status and ROHS3 compliance. Selection of OP400HSZ is appropriate for applications requiring exact electrical and mechanical compatibility with the obsolete OP400HS. Packaging options include tube format, and the part is available in production quantities.

Secondary Recommendation: LT1114 Series (LT1114IS#PBF, LT1114IS#TRPBF, LT1114S#PBF, LT1114S#TRPBF)

The LT1114 series provides functional equivalence as a 4-circuit general-purpose amplifier with active product status and ROHS3 compliance. These parts offer improved electrical performance characteristics including higher gain bandwidth product (750 kHz versus 500 kHz) and lower input bias current (70 pA versus 750 pA). The LT1114 series operates with a lower minimum supply voltage (2V versus 6V), providing greater flexibility in power supply design. Operating temperature range is -40°C to 85°C for LT1114IS variants and 0°C to 70°C for LT1114S variants. Package dimensions differ from the OP400HS (0.154" width versus 0.295" width), requiring PCB layout modification. Multiple packaging options are available including tube, tape and reel, and cut tape formats.

Tertiary Recommendation: LT1125MPSW Series (LT1125MPSW#PBF, LT1125MPSW#TRPBF)

The LT1125MPSW series is suitable for applications requiring enhanced performance characteristics. These parts maintain the same 16-SOIC package width (0.295", 7.50mm) as the OP400HS, minimizing PCB layout modifications. The LT1125MPSW series provides significantly higher slew rate (4.5V/µs versus 0.15V/µs) and gain bandwidth product (12.5 MHz versus 500 kHz), enabling use in higher-frequency applications. Operating temperature range extends to -55°C to 125°C, providing broader environmental coverage. Supply voltage range is 8V to 44V. Current supply per channel is higher (2.3 mA versus 600 µA), requiring consideration in power budget calculations. ROHS3 compliance and MSL 1 rating are provided.

Alternative Recommendation: AD8624ACPZ-RL

The AD8624ACPZ-RL offers enhanced performance with rail-to-rail output capability, lower input bias current (45 pA), and lower input offset voltage (10 µV). This part is packaged in a 16-WQFN form factor requiring significant PCB layout redesign. Operating temperature range extends to -40°C to 125°C. Supply voltage range is 5V to 30V. This part is suitable for applications requiring improved precision and higher operating temperature capability. MSL rating is 3 (168 hours), requiring controlled moisture exposure during storage and handling.

Alternative Recommendation: TS514AIDT

The TS514AIDT from STMicroelectronics provides 4-circuit general-purpose amplification with active product status and ROHS3 compliance. This part is packaged in a 14-SOIC form factor, requiring PCB redesign due to reduced pin count. Operating temperature range is -40°C to 125°C. Supply voltage range is 6V to 30V. Electrical performance characteristics differ significantly, including higher slew rate (1.5V/µs) and gain bandwidth product (3 MHz) compared to the OP400HS. This part is suitable for applications where alternative manufacturer sourcing is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the OP400HSZ be used as a direct replacement for the OP400HS without PCB modifications?

A: Yes. The OP400HSZ maintains identical electrical specifications, package dimensions (16-SOIC, 0.295" width), pin configuration, and operating characteristics as the OP400HS. No circuit modifications or PCB layout changes are required for direct substitution.

Q: What are the key differences between the OP400HS and the LT1114 series?

A: The LT1114 series provides higher gain bandwidth product (750 kHz versus 500 kHz), lower input bias current (70 pA versus 750 pA), and lower input offset voltage (20 µV versus 80 µV). The LT1114 series operates with a lower minimum supply voltage (2V versus 6V). Package width differs (0.154" versus 0.295"), requiring PCB layout modification. Operating temperature range for LT1114IS variants matches the OP400HS (-40°C to 85°C), while LT1114S variants are limited to 0°C to 70°C.

Q: Is the LT1125MPSW series suitable for high-frequency applications?

A: The LT1125MPSW series provides significantly higher slew rate (4.5V/µs versus 0.15V/µs) and gain bandwidth product (12.5 MHz versus 500 kHz), making it suitable for applications requiring faster response and higher frequency operation. However, supply current per channel is higher (2.3 mA versus 600 µA), requiring power budget recalculation.

Q: What package considerations apply when substituting the OP400HS with the LT1114 series?

A: The LT1114 series is packaged in a 16-SOIC form factor with 0.154" width, compared to the OP400HS 16-SOIC with 0.295" width. This dimensional difference requires PCB layout modification, including pad spacing and trace routing adjustments. Pin configuration remains identical for 16-pin SOIC packages.

Q: Can the AD8624ACPZ-RL be used as a direct replacement for the OP400HS?

A: The AD8624ACPZ-RL provides functional equivalence as a 4-circuit general-purpose amplifier with improved electrical performance. However, this part is packaged in a 16-WQFN form factor rather than 16-SOIC, requiring significant PCB redesign. Supply voltage range differs (5V to 30V versus 6V to 36V). MSL rating is 3 (168 hours) rather than 1 (unlimited), requiring controlled moisture handling. This substitution is suitable only when PCB redesign is acceptable.

Q: What is the significance of the MSL rating difference between the OP400HS and AD8624ACPZ-RL?

A: The OP400HS has MSL 1 (unlimited moisture sensitivity), allowing indefinite storage without moisture control. The AD8624ACPZ-RL has MSL 3 (168 hours), requiring that the component be used within 168 hours of moisture barrier bag opening. This affects inventory management, storage procedures, and production scheduling.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed are ROHS3 compliant. The OP400HS does not specify RoHS status. All active alternatives meet current RoHS3 environmental compliance requirements.

Q: Which substitute part maintains the same package width as the OP400HS?

A: The OP400HSZ and LT1125MPSW series maintain the same 16-SOIC package width (0.295", 7.50mm) as the OP400HS. The LT1114 series uses a narrower 16-SOIC package (0.154", 3.90mm). The TS514AIDT uses a 14-SOIC package (0.154", 3.90mm). The AD8624ACPZ-RL uses a 16-WQFN package.

Q: What is the operating temperature range limitation for the LT1114S variants?

A: The LT1114S#PBF and LT1114S#TRPBF variants operate across 0°C to 70°C, compared to the OP400HS range of -40°C to 85°C. These variants are not suitable for applications requiring operation below 0°C or above 70°C. The LT1114IS variants maintain the -40°C to 85°C range.

Q: Can the TS514AIDT be used in applications requiring the full -40°C to 85°C temperature range?

A: The TS514AIDT operates across -40°C to 125°C, exceeding the OP400HS temperature range. This part is suitable for applications requiring the full -40°C to 85°C range and provides extended high-temperature capability. However, the 14-SOIC package requires PCB redesign.