ICL7621BESA+ Equivalent & Substitute Parts

Part Overview

The ICL7621BESA+ is a CMOS amplifier integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. This dual-channel, rail-to-rail operational amplifier is designed for low-power applications requiring precision signal conditioning. The device features a 2-circuit configuration in an 8-SOIC surface mount package and operates across a wide supply voltage range of 2V to 16V. The part maintains Active product status and is ROHS3 compliant, making it suitable for current and future production environments. Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain component availability across manufacturing cycles.

Substiute Parts

ICL7621BESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 883ICL7621BESA+ Datasheet

Current PartRFQ

ICL7621BESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 883ICL7621BESA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICL7621BESA+ is determined by strict equivalence across the following critical parameters:

Functional Parameters:

• Amplifier Type: CMOS technology
• Number of Circuits: Dual-channel (2 circuits)
• Output Type: Rail-to-Rail capability
• Slew Rate: 1.6 V/µs
• Gain Bandwidth Product: 1.4 MHz
• Input Bias Current: 1 pA
• Input Offset Voltage: 5 mV
• Supply Current: 1 mA per channel

Electrical Operating Range:

• Supply Voltage Span: 2V minimum to 16V maximum
• Operating Temperature: -40°C to 85°C

Physical & Compliance Parameters:

• Package: 8-SOIC surface mount form factor
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

A substitute part must match all of these parameters to ensure functional and mechanical compatibility without design modification or performance degradation.

Parameter Comparison

Engineering Selection Recommendations

The ICL7621BESA+ is the direct equivalent part for applications requiring this specific CMOS dual-channel amplifier configuration. Selection is based on the following engineering criteria:

Product Status & Availability: The part maintains Active product status, ensuring continued manufacturing support and supply chain reliability. With 828 pieces in current inventory, the component is available for immediate procurement.

Compliance & Regulatory Alignment: The ICL7621BESA+ carries ROHS3 compliance certification, meeting current environmental and hazardous substance restrictions. REACH Unaffected status confirms no regulatory restrictions on material composition. These certifications ensure compatibility with modern manufacturing standards and end-user regulatory requirements.

Packaging & Thermal Characteristics: The 8-SOIC surface mount package with 0.154" (3.90mm) width provides standard PCB integration. Moisture Sensitivity Level 1 (Unlimited) indicates no special handling or storage requirements, reducing logistics complexity and cost.

Electrical Performance Consistency: All electrical parameters—including slew rate, gain bandwidth product, input bias current, input offset voltage, and supply current specifications—are held to identical values, ensuring drop-in compatibility without circuit redesign or performance adjustment.

Frequently Asked Questions (FAQ)

Q: Can the ICL7621BESA+ be substituted with other dual-channel CMOS amplifiers?

A: Substitution requires exact matching of all specified parameters: CMOS technology, 2-circuit configuration, rail-to-rail output, 1.6 V/µs slew rate, 1.4 MHz gain bandwidth product, 1 pA input bias current, 5 mV input offset voltage, 1 mA supply current per channel, 2V to 16V supply range, and 8-SOIC package. Parts that differ in any of these specifications are not direct substitutes and require circuit evaluation.

Q: Is the 8-SOIC package interchangeable with other surface mount packages?

A: No. The 8-SOIC package with 0.154" (3.90mm) width is a specific form factor. Alternative packages such as 8-DIP, 8-TSSOP, or other SOIC variants have different pin spacing, footprint dimensions, and PCB layout requirements. Package changes require PCB redesign and are not considered substitutions.

Q: What does ROHS3 compliance mean for component selection?

A: ROHS3 compliance indicates the component meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, hexavalent chromium, and certain flame retardants. This certification is mandatory for many industrial and consumer applications and ensures regulatory compliance without additional material qualification.

Q: Does Moisture Sensitivity Level 1 affect storage or handling procedures?

A: MSL 1 (Unlimited) indicates no moisture sensitivity restrictions. The component does not require dry-pack storage, desiccant bags, or bake-out procedures before soldering. Standard warehouse storage conditions are acceptable.

Q: Can the ICL7621BESA+ operate at temperatures outside the -40°C to 85°C range?

A: No. The specified operating temperature range is -40°C to 85°C. Operation outside this range is not characterized and may result in parameter drift, reduced reliability, or device failure. Extended temperature variants (such as -55°C to 125°C) require a different part number and must be sourced separately.

Q: What is the significance of 1 pA input bias current for circuit design?

A: The 1 pA input bias current is extremely low, typical of CMOS amplifier technology. This specification indicates minimal current draw at the input terminals, reducing loading effects on signal sources and enabling high-impedance input applications without significant signal attenuation or noise contribution.

Q: Are there any supply voltage restrictions when using the ICL7621BESA+?

A: The component operates across a 2V to 16V supply range. Single-supply operation is possible at 2V minimum; dual-supply operation (±1V to ±8V) is also supported. Supply voltage must remain within this range during operation. Exceeding 16V or dropping below 2V may cause permanent device damage.