ADA4077-2ARMZ-R7 Equivalent & Substitute Parts

Part Overview

The ADA4077-2ARMZ-R7 is a general-purpose operational amplifier manufactured by Analog Devices Inc., featuring dual circuits in an 8-MSOP surface mount package. This device is classified as Active product status and is ROHS3 compliant. The part is designed for applications requiring low input bias current, low input offset voltage, and moderate bandwidth performance across a wide supply voltage range. Substitute parts are identified to provide design flexibility, inventory alternatives, and continuity of supply for equivalent or similar functional requirements.

Substiute Parts

ADA4077-2ARMZ-R7

Analog Devices Inc.In Stock: 4565ADA4077-2ARMZ-R7 Datasheet

Current PartRFQ

ADA4077-2ARMZ-RL

Analog Devices Inc.In Stock: 3393ADA4077-2ARMZ-RL Datasheet

Parametric EquivalentRFQ

RC4558DGKR

Texas InstrumentsIn Stock: 6704RC4558DGKR Datasheet

SimilarRFQ

RC4558DGKRG4

Texas InstrumentsIn Stock: 5967RC4558DGKRG4 Datasheet

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RC4558IDGKR

Texas InstrumentsIn Stock: 37766RC4558IDGKR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ADA4077-2ARMZ-R7 are classified into two categories based on parametric equivalence and functional similarity:

Parametric Equivalent (Direct Substitution): The ADA4077-2ARMZ-RL is a parametric equivalent manufactured by Analog Devices Inc. This part shares identical electrical specifications including slew rate (1.2 V/µs), gain bandwidth product (3.6 MHz), input bias current (400 pA), input offset voltage (50 µV), supply current (400 µA per channel), and operating temperature range (-40°C to 125°C). The package configuration, mounting type, and compliance certifications are identical. This part is suitable for direct substitution without circuit redesign.

Similar Manufacturer Parts (Functional Alternatives): The RC4558DGKR, RC4558DGKRG4, and RC4558IDGKR are general-purpose dual operational amplifiers manufactured by Texas Instruments. These parts share the same number of circuits (2), output current capability (10 mA per channel), and maximum supply voltage (30 V). However, they exhibit differences in slew rate (1.7 V/µs versus 1.2 V/µs), gain bandwidth product (3 MHz versus 3.6 MHz), input bias current (150 nA versus 400 pA), input offset voltage (500 µV versus 50 µV), supply current (2.5 mA per channel versus 400 µA), and minimum supply voltage (10 V versus 5 V). These parts are functionally similar but require evaluation for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

ADA4077-2ARMZ-RL (Parametric Equivalent): This part is the primary substitute for the ADA4077-2ARMZ-R7. Both parts are manufactured by Analog Devices Inc., maintain Active product status, and are ROHS3 compliant with MSL 1 rating. Electrical and thermal specifications are identical. This part is suitable for direct substitution in all applications where the ADA4077-2ARMZ-R7 is specified. Current inventory availability is 3300 pieces.

RC4558IDGKR (Functional Alternative - Recommended): This Texas Instruments part is Active status and ROHS3 compliant with MSL 1 rating. It provides the widest operating temperature range among RC4558 variants (-40°C to 85°C), which approaches the ADA4077-2ARMZ-R7 specification (-40°C to 125°C). The RC4558IDGKR exhibits higher slew rate (1.7 V/µs), higher input bias current (150 nA), higher input offset voltage (500 µV), higher supply current (2.5 mA per channel), and requires minimum 10 V supply voltage. These differences require circuit evaluation for applications sensitive to offset voltage, bias current, or low-voltage operation. Current inventory availability is 37750 pieces.

RC4558DGKR (Functional Alternative): This Texas Instruments part is Active status and ROHS3 compliant with MSL 1 rating. Operating temperature range is 0°C to 70°C, which is narrower than the ADA4077-2ARMZ-R7. Electrical performance differences are identical to RC4558IDGKR. This part is suitable for applications operating within the 0°C to 70°C range. Current inventory availability is 6683 pieces.

RC4558DGKRG4 (Not Recommended): This part is classified as Obsolete product status. Although ROHS3 compliant and MSL 1 rated, the obsolete classification indicates discontinued manufacturing and limited long-term availability. This part should not be selected for new designs or applications requiring sustained supply.

Frequently Asked Questions (FAQ)

Q: Can the ADA4077-2ARMZ-RL be used as a direct replacement for the ADA4077-2ARMZ-R7?

A: Yes. The ADA4077-2ARMZ-RL is a parametric equivalent with identical electrical specifications, operating temperature range, package configuration, and compliance certifications. No circuit modifications are required.

Q: What are the key differences between the ADA4077-2ARMZ-R7 and RC4558 series parts?

A: The primary differences are: (1) Input bias current is 400 pA for ADA4077-2ARMZ-R7 versus 150 nA for RC4558 parts, representing a 375-fold increase; (2) Input offset voltage is 50 µV for ADA4077-2ARMZ-R7 versus 500 µV for RC4558 parts; (3) Supply current per channel is 400 µA for ADA4077-2ARMZ-R7 versus 2.5 mA for RC4558 parts; (4) Minimum supply voltage is 5 V for ADA4077-2ARMZ-R7 versus 10 V for RC4558 parts; (5) Operating temperature range varies by RC4558 variant.

Q: Can RC4558 parts be substituted in applications requiring low input bias current?

A: RC4558 parts are not suitable for applications where input bias current specification is critical. The 150 nA bias current of RC4558 parts is 375 times higher than the 400 pA specification of ADA4077-2ARMZ-R7. Applications requiring precision transimpedance amplifiers, photodiode amplifiers, or high-impedance signal conditioning should use the ADA4077-2ARMZ-R7 or ADA4077-2ARMZ-RL.

Q: Are the package dimensions compatible between ADA4077-2ARMZ-R7 and RC4558 parts?

A: Both part families use 8-pin surface mount packages with 0.118" (3.00mm) width. However, the ADA4077-2ARMZ-R7 uses 8-MSOP package while RC4558 parts use 8-VSSOP package. Although both packages have identical pitch and width, pin-to-pin compatibility must be verified with device datasheets before PCB layout finalization.

Q: Which RC4558 variant should be selected if substitution is necessary?

A: The RC4558IDGKR is the recommended RC4558 variant due to its Active product status and extended operating temperature range (-40°C to 85°C). The RC4558DGKR is suitable only for applications operating within 0°C to 70°C. The RC4558DGKRG4 should not be selected due to Obsolete product status.

Q: What is the impact of higher supply current in RC4558 parts?

A: RC4558 parts consume 2.5 mA per channel compared to 400 µA per channel for ADA4077-2ARMZ-R7. This 6.25-fold increase in supply current affects power dissipation, thermal management, and battery life in portable applications. Applications with strict power budget constraints should retain the ADA4077-2ARMZ-R7 or ADA4077-2ARMZ-RL.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts, including ADA4077-2ARMZ-RL, RC4558DGKR, RC4558DGKRG4, and RC4558IDGKR, are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level rating.

Q: What is the significance of the -40°C to 125°C operating temperature range of ADA4077-2ARMZ-R7?

A: The extended upper temperature limit of 125°C accommodates industrial and automotive applications requiring operation in high-temperature environments. RC4558 variants have lower upper temperature limits (70°C or 85°C), restricting their use in such applications. Applications requiring sustained operation above 85°C must use ADA4077-2ARMZ-R7 or ADA4077-2ARMZ-RL.