ICL7652P Zero-Drift Operational Amplifier Equivalent & Substitute Parts

Part Overview

The ICL7652P is a zero-drift operational amplifier manufactured by Texas Instruments, designed for precision analog signal conditioning applications. This device features a single amplifier circuit in an 8-DIP through-hole package with LinCMOS™ technology. The ICL7652P is currently in Last Time Buy status, indicating that new production has ceased and existing inventory is limited. Finding equivalent and substitute parts is necessary to ensure design continuity and long-term component availability for new designs or production requirements.

Substiute Parts

ICL7652P

Texas InstrumentsIn Stock: 4013ICL7652P Datasheet

Current PartRFQ

OPA182IDR

Texas InstrumentsIn Stock: 3129OPA182IDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICL7652P is determined by the following critical parameters:

Functional Equivalence Criteria:

• Amplifier Type: Zero-Drift technology for offset voltage minimization
• Number of Circuits: Single amplifier configuration
• Input Bias Current: Ultra-low leakage current (4 pA specification)
• Voltage - Input Offset: Low offset voltage performance (600 µV)

Electrical Compatibility Criteria:

• Supply voltage range must encompass or exceed the 3.8 V to 16 V operating range
• Slew rate and gain bandwidth product determine signal fidelity in dynamic applications
• Current supply requirements affect power budget allocation

Physical Compatibility Criteria:

• Package type determines board layout and socket compatibility
• Mounting type (through-hole vs. surface-mount) affects assembly process

The OPA182IDR qualifies as a substitute based on shared zero-drift amplifier architecture and single-circuit configuration. However, differences in package type, supply voltage range, and performance specifications must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The ICL7652P is designated Last Time Buy, indicating cessation of production. The OPA182IDR maintains Active product status with ongoing manufacturing support and availability.

Compliance and Certification: The ICL7652P carries ROHS3 compliance and REACH Unaffected status. The OPA182IDR does not specify RoHS status in the provided data. Both devices carry EAR99 ECCN classification and identical HTSUS codes (8542.33.0001), indicating equivalent regulatory treatment.

Performance Trade-offs: Substitution of ICL7652P with OPA182IDR introduces the following parameter changes:

• Slew rate increases from 3.1 V/µs to 10 V/µs, improving transient response
• Gain bandwidth product increases from 1.9 MHz to 5 MHz, enabling higher-frequency signal processing
• Input offset voltage decreases from 600 µV to 0.45 µV, improving precision
• Input bias current increases from 4 pA to 50 pA, affecting high-impedance source compatibility
• Supply current decreases from 1.5 mA to 0.85 mA, reducing power consumption
• Minimum supply voltage increases from 3.8 V to 4.5 V
• Maximum supply voltage increases from 16 V to 36 V, enabling broader supply range applications

Package and Assembly Impact: The OPA182IDR requires conversion from through-hole (8-DIP) to surface-mount (8-SOIC) assembly. This necessitates PCB redesign and updated assembly procedures. Operating temperature range expands from 0–70°C to -40–125°C with OPA182IDR.

Frequently Asked Questions (FAQ)

Q: Can the OPA182IDR directly replace the ICL7652P in existing PCB designs?

A: No. The OPA182IDR uses 8-SOIC surface-mount packaging while the ICL7652P uses 8-DIP through-hole packaging. Direct socket substitution is not possible. PCB redesign and component footprint changes are required. An adapter or rework solution would be necessary for prototype evaluation.

Q: What are the critical parameter differences affecting circuit performance?

A: The OPA182IDR provides superior performance in slew rate (10 V/µs vs. 3.1 V/µs), gain bandwidth product (5 MHz vs. 1.9 MHz), and input offset voltage (0.45 µV vs. 600 µV). However, input bias current increases from 4 pA to 50 pA, which may affect circuits with very high source impedances. Supply current is lower (0.85 mA vs. 1.5 mA), and the supply voltage range is broader (4.5–36 V vs. 3.8–16 V).

Q: Is the OPA182IDR suitable for low-voltage applications below 4.5 V?

A: No. The OPA182IDR minimum supply voltage is 4.5 V, while the ICL7652P operates down to 3.8 V. Applications requiring operation below 4.5 V cannot use the OPA182IDR as a direct substitute.

Q: What is the significance of the Last Time Buy status for the ICL7652P?

A: Last Time Buy status indicates that Texas Instruments has ceased new production of the ICL7652P. Existing inventory will be depleted, and the part will eventually become unavailable. New designs should transition to active products such as the OPA182IDR to ensure long-term component supply and manufacturing support.

Q: How does the expanded operating temperature range of the OPA182IDR affect substitution decisions?

A: The OPA182IDR operates from -40°C to 125°C compared to the ICL7652P range of 0°C to 70°C. For applications within the original 0–70°C range, the OPA182IDR provides equivalent or superior performance. For applications requiring operation below 0°C or above 70°C, the OPA182IDR enables expanded environmental capability.

Q: Are there compliance or regulatory differences between these parts?

A: Both parts carry identical HTSUS codes and EAR99 ECCN classification. The ICL7652P specifies ROHS3 compliance and REACH Unaffected status. The OPA182IDR does not provide RoHS status in the available data. Compliance verification with the OPA182IDR should be confirmed against specific application requirements.

Q: What packaging options are available for the OPA182IDR?

A: The OPA182IDR is supplied in Cut Tape (CT) and Digi-Reel® packaging formats for surface-mount assembly. The ICL7652P is supplied in Tube packaging for through-hole assembly. Packaging format selection depends on production volume and assembly equipment capabilities.