ICL7652CPD Zero-Drift Operational Amplifier Equivalent & Substitute Parts

Part Overview

The ICL7652CPD is a zero-drift operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, designed for precision analog signal conditioning applications requiring minimal input offset voltage. This device integrates one operational amplifier circuit in a 14-pin DIP package and operates across a 5V to 16V supply range with an operating temperature range of 0°C to 70°C.

The ICL7652CPD is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support legacy system maintenance where this component is specified in existing designs.

Substiute Parts

ICL7652CPD+

Analog Devices Inc./Maxim IntegratedIn Stock: 5700ICL7652CPD+ Datasheet

Current PartRFQ

TC7652CPD

Microchip TechnologyIn Stock: 1541TC7652CPD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICL7652CPD is determined by strict equivalence across the following critical parameters:

Mechanical Compatibility:

• Package type: 14-DIP (0.300", 7.62mm)
• Mounting type: Through Hole
• Pin count and pinout configuration

Functional Equivalence:

• Amplifier type: Zero-Drift topology
• Number of circuits: Single operational amplifier
• Supply voltage range: 5V to 16V minimum and maximum
• Operating temperature range: 0°C to 70°C

Electrical Performance Boundaries:

• Input offset voltage: Must not exceed 700 µV
• Input bias current: Must not exceed 15 pA
• Supply current: Must not exceed 2 mA
• Slew rate: Minimum 0.5 V/µs
• Gain bandwidth product: Minimum 450 kHz

Substitute parts must satisfy all mechanical and functional requirements while maintaining electrical performance within or superior to the specified boundaries. Parts that exceed these electrical limits are not suitable for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

TC7652CPD as Substitute for ICL7652CPD:

The TC7652CPD from Microchip Technology is mechanically and functionally compatible with the ICL7652CPD. Both devices share identical package specifications (14-DIP), mounting type (Through Hole), supply voltage range (5V to 16V), and operating temperature range (0°C to 70°C). Both are ROHS3 compliant and REACH unaffected.

The TC7652CPD is an active product with current manufacturing support, whereas the ICL7652CPD is obsolete. This substitution addresses supply chain continuity for legacy designs.

Electrical performance differences exist: The TC7652CPD exhibits superior slew rate (1 V/µs versus 0.5 V/µs) and lower supply current (1 mA versus 2 mA). However, the TC7652CPD has higher input offset voltage (2 mV versus 700 µV) and higher input bias current (30 pA versus 15 pA). The gain bandwidth product of the TC7652CPD (400 kHz) is marginally below the ICL7652CPD specification (450 kHz).

Selection of the TC7652CPD is appropriate for applications where the ICL7652CPD's precision offset voltage specification is not critical to circuit performance. Applications requiring the original 700 µV input offset voltage specification should evaluate whether the TC7652CPD's 2 mV offset is acceptable within the system's error budget.

Frequently Asked Questions (FAQ)

Q: Can the TC7652CPD directly replace the ICL7652CPD in existing PCB designs?

A: Yes, the TC7652CPD is mechanically compatible with the ICL7652CPD. Both devices use the 14-DIP package with identical pin spacing (0.300", 7.62mm) and through-hole mounting. No PCB modifications are required for physical installation.

Q: What are the key electrical differences between these parts?

A: The TC7652CPD has a higher input offset voltage (2 mV versus 700 µV) and higher input bias current (30 pA versus 15 pA). The TC7652CPD offers faster slew rate (1 V/µs versus 0.5 V/µs) and lower supply current consumption (1 mA versus 2 mA). The gain bandwidth product differs slightly (400 kHz versus 450 kHz).

Q: Is the TC7652CPD suitable for precision measurement applications?

A: The TC7652CPD's input offset voltage of 2 mV is higher than the ICL7652CPD's 700 µV specification. For applications requiring offset voltage below 2 mV, circuit-level offset trimming or alternative components should be evaluated.

Q: Are both parts compliant with environmental and regulatory standards?

A: Yes, both the ICL7652CPD and TC7652CPD are ROHS3 compliant and REACH unaffected. Both meet the same environmental and regulatory requirements.

Q: Why is the ICL7652CPD obsolete while the TC7652CPD remains active?

A: The ICL7652CPD was discontinued by Analog Devices Inc./Maxim Integrated. The TC7652CPD from Microchip Technology continues to be manufactured and represents the active equivalent in the market for zero-drift operational amplifier applications in the 14-DIP package.

Q: What supply voltage range do both parts support?

A: Both the ICL7652CPD and TC7652CPD operate across a 5V to 16V supply voltage range, making them suitable for single and dual supply configurations within this specification.