ICL7650BCSD Equivalent & Substitute Parts

Part Overview

The ICL7650BCSD is a chopper (zero-drift) amplifier manufactured by Analog Devices Inc./Maxim Integrated, housed in a 14-SOIC surface mount package. This single-circuit operational amplifier is designed for applications requiring extremely low input offset voltage and minimal drift characteristics. The product is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

ICL7650BCSD

Analog Devices Inc./Maxim IntegratedIn Stock: 3063ICL7650BCSD Datasheet

Current PartRFQ

TLC2652AC-14D

Texas InstrumentsIn Stock: 2197TLC2652AC-14D Datasheet

MFR RecommendedRFQ

TLC2652AI-14D

Texas InstrumentsIn Stock: 962TLC2652AI-14D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICL7650BCSD is determined by the following critical parameters:

Package Compatibility: Both substitute parts maintain the 14-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical and electrical pin compatibility without PCB redesign.

Amplifier Classification: The ICL7650BCSD is a chopper (zero-drift) amplifier. Substitute parts must be zero-drift amplifiers to maintain the core functional characteristic of minimized input offset voltage and drift performance.

Single-Circuit Configuration: The main part contains one amplifier circuit. Substitute parts must also be single-circuit devices to match functional density and application requirements.

Electrical Operating Range: Supply voltage span (4.5 V to 16 V) and operating temperature range (0°C to 70°C) define the application environment. Substitute parts must support these ranges or broader ranges to ensure compatibility.

Regulatory Compliance: RoHS status and REACH compliance are critical for modern procurement and environmental regulations.

The identified substitutes are TLC2652AC-14D and TLC2652AI-14D, both manufactured by Texas Instruments. These devices are zero-drift amplifiers in 14-SOIC packaging with compatible electrical specifications and superior performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

TLC2652AI-14D (Primary Recommendation)

The TLC2652AI-14D is the preferred substitute for the obsolete ICL7650BCSD. This device is classified as active product status, ensuring long-term availability and manufacturing support. It is ROHS3 compliant, meeting current environmental and regulatory requirements. The extended operating temperature range (-40°C to 85°C) provides broader application flexibility compared to the original part's 0°C to 70°C range. The TLC2652AI-14D delivers superior electrical performance with input offset voltage of 0.5 µV (versus 700 µV), higher slew rate (3.1 V/µs versus 2.5 V/µs), and lower supply current (1.5 mA versus 2 mA). Pin-compatible 14-SOIC packaging eliminates redesign requirements.

TLC2652AC-14D (Secondary Recommendation)

The TLC2652AC-14D serves as an alternative substitute with identical electrical specifications to the TLC2652AI-14D. This device is classified as Last Time Buy, indicating limited future availability. It is ROHS3 compliant and operates within the original temperature range (0°C to 70°C). Selection of this part should be reserved for applications with specific temperature constraints or when TLC2652AI-14D availability is constrained.

Both substitutes are manufactured by Texas Instruments and belong to the LinCMOS™ series, providing proven reliability in zero-drift amplifier applications.

Frequently Asked Questions (FAQ)

Q: Why is the ICL7650BCSD classified as obsolete?

A: The ICL7650BCSD has reached end-of-life status with Analog Devices Inc./Maxim Integrated. Obsolete classification indicates the manufacturer no longer produces this device and existing inventory is limited. Transition to active alternatives is necessary for design continuity and production planning.

Q: Are the TLC2652 substitutes pin-compatible with the ICL7650BCSD?

A: Yes. Both TLC2652AC-14D and TLC2652AI-14D are housed in 14-SOIC (0.154", 3.90mm Width) surface mount packages with identical pinouts to the ICL7650BCSD. No PCB modifications are required for substitution.

Q: What are the key performance differences between the ICL7650BCSD and TLC2652 substitutes?

A: The TLC2652 devices offer superior input offset voltage performance (0.5 µV versus 700 µV), higher slew rate (3.1 V/µs versus 2.5 V/µs), and lower supply current consumption (1.5 mA versus 2 mA). Gain bandwidth product is slightly lower (1.9 MHz versus 2 MHz). These differences result in improved precision and reduced power consumption in most applications.

Q: What is the difference between TLC2652AC-14D and TLC2652AI-14D?

A: Both devices are electrically identical with identical electrical specifications. The primary differences are product status and operating temperature range. TLC2652AI-14D is active product with extended temperature range (-40°C to 85°C), while TLC2652AC-14D is Last Time Buy with standard temperature range (0°C to 70°C). For new designs, TLC2652AI-14D is recommended due to active status and broader temperature support.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both TLC2652AC-14D and TLC2652AI-14D are ROHS3 compliant. The original ICL7650BCSD is RoHS non-compliant. Substitution provides compliance with current environmental regulations and procurement requirements.

Q: Can the TLC2652 substitutes operate at the minimum supply voltage of the ICL7650BCSD?

A: The TLC2652 devices support a lower minimum supply voltage (3.8 V) compared to the ICL7650BCSD (4.5 V). This provides enhanced flexibility for low-voltage applications. Both devices support the maximum supply voltage of 16 V.

Q: What is the moisture sensitivity level (MSL) for these devices?

A: All three devices (ICL7650BCSD, TLC2652AC-14D, and TLC2652AI-14D) have MSL rating of 1 (Unlimited), indicating no moisture sensitivity constraints during storage and handling.