TLC27L2ACPSRG4 Equivalent & Substitute Parts

Part Overview

The TLC27L2ACPSRG4 is a CMOS amplifier integrated circuit manufactured by Texas Instruments, featuring two independent circuits in an 8-SO surface mount package. This device is classified as a LinCMOS™ series component and is currently listed as obsolete. The part operates across a supply voltage range of 3V to 16V with ultra-low input bias current of 0.6 pA and is designed for applications requiring low-power CMOS amplification. Due to its obsolete status, identifying equivalent substitute parts is necessary for design continuity and procurement planning.

Substiute Parts

TLC27L2ACPSRG4

Texas InstrumentsIn Stock: 796TLC27L2ACPSRG4 Datasheet

Current PartRFQ

LM432MA/NOPB

Texas InstrumentsIn Stock: 894LM432MA/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC27L2ACPSRG4 is determined by the following critical parameters:

Functional Compatibility Criteria:

• Number of circuits: 2 independent amplifier circuits required
• Amplifier classification: CMOS or General Purpose amplifier topology
• Output current capability: Minimum 30 mA per channel
• Supply voltage range: Must encompass or exceed 3V to 16V span
• Package type: Surface mount 8-pin configuration (8-SOIC or 8-SO)

Electrical Performance Boundaries:

• Gain bandwidth product: Substitute must support applications designed for 110 kHz baseline performance
• Input bias current: Ultra-low leakage requirement (sub-nanoampere range preferred)
• Input offset voltage: Maximum 900 µV acceptable
• Supply current: Low-power operation (20 µA per channel baseline)

Compliance & Environmental:

• RoHS3 compliance required
• MSL rating of 1 (Unlimited) acceptable
• Operating temperature range consideration for application environment

The LM432MA/NOPB qualifies as a manufacturer-recommended substitute based on matching circuit count, package configuration, output current capability, and compliance certifications, while offering extended operating temperature range and higher gain bandwidth product suitable for broader application scope.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The LM432MA/NOPB is the manufacturer-recommended substitute for the TLC27L2ACPSRG4. Both devices are manufactured by Texas Instruments and share identical RoHS3 compliance and MSL ratings, ensuring regulatory and environmental compatibility.

Key Compatibility Factors:

Both parts feature dual-circuit amplifier configurations in 8-pin surface mount packages with identical 30 mA output current per channel and matching maximum supply voltage of 16V. The LM432MA/NOPB provides a lower minimum supply voltage (2.5V versus 3V), expanding application flexibility.

Performance Considerations:

The LM432MA/NOPB exhibits higher gain bandwidth product (1 MHz versus 110 kHz) and lower input offset voltage (600 µV versus 900 µV), representing performance improvements. Supply current consumption increases from 20 µA to 150 µA per channel pair, a trade-off inherent to the general-purpose amplifier topology.

Package Dimension Variance:

Physical package dimensions differ: TLC27L2ACPSRG4 uses 8-SOIC with 5.30mm width, while LM432MA/NOPB uses 8-SOIC with 3.90mm width. Both are surface mount configurations; PCB layout and footprint adjustments are required.

Temperature Range Extension:

The LM432MA/NOPB supports extended operating temperature range (-40°C to 85°C) compared to the original part (0°C to 70°C), providing broader environmental applicability.

Frequently Asked Questions (FAQ)

Q: Can the LM432MA/NOPB directly replace the TLC27L2ACPSRG4 without circuit modifications?

A: Direct pin-for-pin replacement is possible due to matching dual-circuit configuration and 8-pin package topology. However, PCB footprint adjustment is required due to different package widths (5.30mm versus 3.90mm). Circuit performance will differ due to higher gain bandwidth product and increased supply current consumption; design verification is necessary for applications with strict power budgets.

Q: What is the primary difference between CMOS and General Purpose amplifier types in this context?

A: The TLC27L2ACPSRG4 is specified as CMOS amplifier type, emphasizing ultra-low input bias current (0.6 pA) and low supply current (20 µA). The LM432MA/NOPB is classified as General Purpose amplifier, offering higher bandwidth (1 MHz) and lower input offset voltage (600 µV) at the cost of increased supply current (150 µA). Selection depends on application requirements for bandwidth, power consumption, and input impedance characteristics.

Q: Are both parts suitable for low-power applications?

A: The TLC27L2ACPSRG4 is optimized for ultra-low-power operation with 20 µA supply current per channel pair. The LM432MA/NOPB, while still considered low-power, consumes 150 µA per channel pair. For battery-powered or energy-constrained applications, the original TLC27L2ACPSRG4 specification is preferred if available. The LM432MA/NOPB is suitable for applications where power consumption is secondary to bandwidth and performance.

Q: What compliance certifications apply to both parts?

A: Both the TLC27L2ACPSRG4 and LM432MA/NOPB are ROHS3 compliant and carry MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. Both are REACH unaffected and classified under ECCN EAR99 and HTSUS 8542.33.0001. Regulatory and environmental compliance is equivalent between the two parts.

Q: How does the supply voltage range difference affect substitution?

A: The TLC27L2ACPSRG4 operates from 3V to 16V, while the LM432MA/NOPB operates from 2.5V to 16V. The LM432MA/NOPB provides lower minimum supply voltage, enabling operation in applications with reduced supply rails. Maximum supply voltage is identical at 16V. For designs operating at or above 3V, both parts are compatible; designs operating between 2.5V and 3V require the LM432MA/NOPB.

Q: What inventory considerations exist for these obsolete parts?

A: Both parts are listed as obsolete. Current inventory availability is 764 pieces for TLC27L2ACPSRG4 and 869 pieces for LM432MA/NOPB. For long-term production planning, neither part should be considered for new designs. Existing inventory should be evaluated for remaining product lifecycle requirements.