TLC2652ACP Equivalent & Substitute Parts

Part Overview

The TLC2652ACP is a Zero-Drift Amplifier manufactured by Texas Instruments, designed as a single-circuit, single-ended operational amplifier in an 8-DIP through-hole package. This device is classified as a Last Time Buy product, indicating discontinued production with limited inventory availability. The TLC2652ACP operates across a 3.8 V to 16 V supply range and is suitable for precision analog applications requiring minimal input offset voltage and low input bias current.

Due to its Last Time Buy status, identifying functionally equivalent substitute components is essential for design continuity and long-term product support. Substitute parts must maintain compatibility with the electrical performance specifications and mechanical form factor requirements of the original design.

Substiute Parts

TLC2652ACP

Texas InstrumentsIn Stock: 2243TLC2652ACP Datasheet

Current PartRFQ

OPA182IDR

Texas InstrumentsIn Stock: 3129OPA182IDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC2652ACP is determined by strict alignment of core electrical and mechanical parameters. The following criteria establish valid substitute relationships:

Primary Substitution Criteria:

• Amplifier Type: Zero-Drift topology required
• Number of Circuits: Single circuit (1) required
• Voltage - Input Offset: Must be ≤ 0.5 µV
• Current - Input Bias: Must be ≤ 4 pA
• Supply voltage compatibility: Substitute must operate within or exceed the 3.8 V to 16 V range

Secondary Compatibility Factors:

• Slew Rate and Gain Bandwidth Product: Substitute values may exceed the original specification
• Output Type: Single-Ended or Rail-to-Rail output types are functionally compatible
• Mounting Type: Through-hole and surface-mount packages are mechanically distinct; substitution requires circuit board redesign if package type differs
• Operating Temperature: Substitute range may exceed the original 0°C ~ 70°C specification
• RoHS and REACH Compliance: Regulatory status must be maintained or improved

The OPA182IDR qualifies as a manufacturer-recommended substitute based on zero-drift amplifier topology, superior input offset voltage (0.45 µV), and extended supply voltage range (4.5 V to 36 V). However, the OPA182IDR uses an 8-SOIC surface-mount package, requiring circuit board layout modification.

Parameter Comparison

Engineering Selection Recommendations

OPA182IDR Substitution Assessment:

The OPA182IDR is the manufacturer-recommended substitute for the TLC2652ACP. Both devices employ zero-drift amplifier architecture and are produced by Texas Instruments. The OPA182IDR offers superior electrical performance in several parameters: input offset voltage is reduced to 0.45 µV (versus 0.5 µV), slew rate is increased to 10 V/µs (versus 3.1 V/µs), and gain bandwidth product is extended to 5 MHz (versus 1.9 MHz). Supply voltage range is expanded to 4.5 V to 36 V, providing greater design flexibility.

Critical Considerations:

1. Package Incompatibility: The OPA182IDR uses an 8-SOIC surface-mount package, while the TLC2652ACP uses an 8-DIP through-hole package. Direct socket substitution is not possible; circuit board redesign is required.

2. Input Bias Current: The OPA182IDR exhibits higher input bias current (50 pA versus 4 pA). Applications with high-impedance input sources may require circuit topology adjustment.

3. Product Status: The TLC2652ACP is Last Time Buy; the OPA182IDR is Active production. Substitution ensures long-term component availability.

4. Regulatory Compliance: The TLC2652ACP is ROHS3 Compliant. The OPA182IDR RoHS status is listed as Not applicable; verify compliance requirements for your application.

5. Operating Temperature: The OPA182IDR supports -40°C ~ 125°C, exceeding the TLC2652ACP range of 0°C ~ 70°C.

Frequently Asked Questions (FAQ)

Q: Can the OPA182IDR be used as a direct replacement for the TLC2652ACP without circuit board modification?

A: No. The OPA182IDR is packaged in 8-SOIC surface-mount format, while the TLC2652ACP uses 8-DIP through-hole format. Circuit board redesign is required. However, the pin configuration and functional pinout are compatible.

Q: What is the significance of the higher input bias current in the OPA182IDR?

A: The OPA182IDR input bias current is 50 pA compared to 4 pA in the TLC2652ACP. In applications with very high source impedance (>1 MΩ), this difference may introduce measurable input offset voltage drift. Verify input impedance requirements for your circuit.

Q: Why is the OPA182IDR recommended as a substitute if it has higher input bias current?

A: The OPA182IDR is recommended based on zero-drift amplifier topology, superior input offset voltage (0.45 µV), active product status, and extended supply voltage range. The higher input bias current is a trade-off acceptable in most applications. Evaluate your specific circuit requirements.

Q: Is the OPA182IDR suitable for low-power applications?

A: Yes. The OPA182IDR supply current is 0.85 mA, lower than the TLC2652ACP at 1.5 mA, making it more suitable for battery-powered or low-power designs.

Q: What is the impact of the extended supply voltage range in the OPA182IDR?

A: The OPA182IDR operates from 4.5 V to 36 V, compared to the TLC2652ACP range of 3.8 V to 16 V. This allows use in higher-voltage applications. However, minimum supply voltage is slightly higher (4.5 V versus 3.8 V); verify compatibility with your power supply design.

Q: Are there other zero-drift amplifier substitutes available?

A: The OPA182IDR is the manufacturer-recommended substitute listed for the TLC2652ACP. Additional zero-drift amplifiers from other manufacturers may exist; however, only the OPA182IDR is specified in the manufacturer's official substitute list.

Q: What is the difference between single-ended and rail-to-rail output types?

A: Single-ended output (TLC2652ACP) has output swing limited by internal circuit design. Rail-to-rail output (OPA182IDR) can swing closer to the positive and negative supply rails, providing greater output voltage range. For most applications, this is an improvement.

Q: Is RoHS compliance maintained with the OPA182IDR substitute?

A: The TLC2652ACP is ROHS3 Compliant. The OPA182IDR RoHS status is listed as Not applicable. Verify RoHS compliance requirements for your end application and supply chain.