OP400GP Equivalent & Substitute Parts

Part Overview

The OP400GP is a general-purpose operational amplifier integrated circuit manufactured by Analog Devices Inc., configured as a 4-circuit differential amplifier in a 14-pin DIP package. This component is classified as obsolete, indicating that direct procurement from primary sources may be limited. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure production availability, and support long-term system maintenance where the OP400GP is specified in existing applications.

Substiute Parts

OP400GP

Analog Devices Inc.In Stock: 2857OP400GP Datasheet

Current PartRFQ

OP400GPZ

Analog Devices Inc.In Stock: 1604OP400GPZ Datasheet

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AD8624ARUZ

Analog Devices Inc.In Stock: 5788AD8624ARUZ Datasheet

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LT1114CN#PBF

Analog Devices Inc.In Stock: 1449LT1114CN#PBF Datasheet

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LT1114IN#PBF

Analog Devices Inc.In Stock: 1109LT1114IN#PBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP400GP is determined by compatibility across the following critical parameters: number of circuits (4), amplifier type (general purpose), package form factor, mounting technology (through hole), supply voltage range, and operating temperature range. Substitute parts are grouped into two categories based on these criteria:

Direct Package Equivalents: Parts maintaining the 14-DIP through-hole package form factor with compatible electrical specifications across supply voltage, operating temperature, and circuit count.

Functional Equivalents with Package Variation: Parts providing equivalent circuit count and amplifier functionality but utilizing alternative package technologies (surface mount) with potentially enhanced electrical performance characteristics.

The following parameters establish substitution validity: 4-circuit configuration, general-purpose amplifier classification, through-hole or surface-mount mounting compatibility with the application, supply voltage range overlap, and operating temperature range suitability.

Parameter Comparison

Engineering Selection Recommendations

OP400GPZ is the direct equivalent substitute for OP400GP. Both parts share identical electrical specifications, package form factor (14-DIP through-hole), and operating temperature range (0°C ~ 70°C). OP400GPZ is currently in active production status with ROHS3 compliance and REACH unaffected certification, providing assured long-term availability compared to the obsolete OP400GP.

LT1114CN#PBF and LT1114IN#PBF are functionally compatible substitutes maintaining the 14-DIP through-hole package and 4-circuit general-purpose amplifier configuration. Both parts operate within the OP400GP supply voltage range and provide improved electrical performance characteristics including lower input bias current (70 pA versus 750 pA), reduced input offset voltage (20 µV versus 80 µV), and lower supply current consumption (350 µA versus 600 µA). LT1114CN#PBF operates within the identical temperature range (0°C ~ 70°C), while LT1114IN#PBF extends the operating temperature range to -40°C ~ 85°C. Both are ROHS3 compliant and REACH unaffected.

AD8624ARUZ is a functional equivalent providing 4-circuit general-purpose amplification with enhanced performance specifications. This part utilizes surface-mount technology (14-TSSOP package) rather than through-hole mounting, requiring PCB redesign for implementation. AD8624ARUZ offers superior electrical characteristics including higher slew rate (0.48 V/µs), lower input bias current (45 pA), reduced input offset voltage (10 µV), and lower supply current (215 µA). Operating temperature range extends to -40°C ~ 125°C. This part is ROHS3 compliant and REACH unaffected. Selection of AD8624ARUZ requires confirmation that surface-mount package compatibility exists within the target application.

Frequently Asked Questions (FAQ)

Q: Can OP400GPZ be used as a direct replacement for OP400GP without circuit modification?

A: Yes. OP400GPZ maintains identical electrical specifications, package form factor, and operating temperature range as OP400GP. No circuit modification is required for direct substitution in through-hole PCB applications.

Q: What are the key differences between OP400GP and LT1114CN#PBF?

A: Both parts maintain the 14-DIP through-hole package and 4-circuit configuration. LT1114CN#PBF provides improved electrical performance with lower input bias current (70 pA versus 750 pA), reduced input offset voltage (20 µV versus 80 µV), and lower supply current consumption (350 µA versus 600 µA). Operating temperature ranges are identical (0°C ~ 70°C). Supply voltage range for LT1114CN#PBF extends lower (2 V minimum versus 6 V minimum) and higher (40 V maximum versus 36 V maximum).

Q: Is LT1114IN#PBF suitable for applications requiring extended temperature operation?

A: LT1114IN#PBF operates across -40°C ~ 85°C, extending the upper temperature limit beyond OP400GP (0°C ~ 70°C). This part is suitable for applications requiring operation below 0°C or above 70°C within the specified range. All other electrical and package specifications remain equivalent to LT1114CN#PBF.

Q: Can AD8624ARUZ replace OP400GP in existing PCB designs?

A: AD8624ARUZ cannot be used as a direct pin-compatible replacement due to package difference (14-TSSOP surface-mount versus 14-DIP through-hole). PCB redesign is required to accommodate the surface-mount package. AD8624ARUZ is suitable for new designs or redesigned applications where surface-mount technology is acceptable.

Q: What compliance certifications apply to substitute parts?

A: OP400GPZ, LT1114CN#PBF, LT1114IN#PBF, and AD8624ARUZ are all ROHS3 compliant and REACH unaffected. All parts maintain MSL rating of 1 (Unlimited). OP400GP compliance status is not specified in available documentation.

Q: Which substitute part provides the lowest power consumption?

A: AD8624ARUZ provides the lowest supply current consumption at 215 µA (x4 channels), compared to 600 µA for OP400GP, 600 µA for OP400GPZ, and 350 µA for both LT1114 variants. Selection of AD8624ARUZ for power-sensitive applications requires confirmation of surface-mount package compatibility.

Q: Are all substitute parts available in equivalent packaging options?

A: OP400GPZ, LT1114CN#PBF, and LT1114IN#PBF are available in tube packaging (14-PDIP). AD8624ARUZ is available in tube packaging (14-TSSOP). Package form factor differs between DIP and TSSOP variants, requiring appropriate PCB accommodation.