LA6500-E Equivalent & Substitute Parts

Part Overview

The LA6500-E is a power amplifier integrated circuit manufactured by onsemi, housed in a TO-220-5H package. This single-circuit power amplifier is designed for applications requiring high current output capability with a 1 A output per channel. The LA6500-E is classified as an obsolete product, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility while accommodating differences in package type, electrical performance, and supply chain availability.

Substiute Parts

LA6500-E

onsemiIn Stock: 7841LA6500-E Datasheet

Current PartRFQ

OPA564AIDWP

Texas InstrumentsIn Stock: 2286OPA564AIDWP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the LA6500-E is determined by the following critical parameters:

Functional Requirements:

• Single-circuit amplifier configuration
• Power amplifier classification
• 1 A output current capability per channel
• Input offset voltage of 2 mV maximum
• Supply voltage range compatibility (10 V to 30 V minimum span)

Compliance & Environmental:

• ROHS3 compliance
• Operating temperature range accommodation
• Moisture sensitivity level classification

Package Considerations:

• Original package: TO-220-5 through-hole mounting
• Substitute packages must be evaluated for board-level integration feasibility

The OPA564AIDWP from Texas Instruments is identified as a substitute part. While it operates as a general-purpose amplifier rather than a dedicated power amplifier, it meets the single-circuit requirement, maintains the 2 mV input offset voltage specification, and delivers 1.5 A output current capability, exceeding the LA6500-E minimum requirement. Both parts maintain ROHS3 compliance and operate within overlapping supply voltage ranges.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The LA6500-E is classified as obsolete, while the OPA564AIDWP maintains active product status with current manufacturing and distribution support. Selection of the OPA564AIDWP ensures long-term component availability and supply chain continuity.

Compliance Alignment: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent substitution in regulated applications.

Electrical Performance: The OPA564AIDWP exceeds the LA6500-E output current specification (1.5 A versus 1 A) and maintains identical input offset voltage (2 mV). The substitute part demonstrates superior slew rate performance (40 V/µs versus 0.15 V/µs) and lower input bias current (10 pA versus 100 nA), indicating enhanced signal fidelity characteristics.

Supply Voltage Compatibility: The OPA564AIDWP operates within a 7 V to 24 V supply range, which overlaps with the LA6500-E range of 10 V to 30 V. Applications utilizing supply voltages between 10 V and 24 V are directly compatible. Designs requiring operation above 24 V require alternative substitutes.

Package Integration: The LA6500-E uses through-hole TO-220-5 packaging, while the OPA564AIDWP employs surface-mount 20-HSOIC packaging. Board redesign is necessary to accommodate the different mounting technology and footprint.

Frequently Asked Questions (FAQ)

Q: Can the OPA564AIDWP directly replace the LA6500-E without circuit modifications?

A: Direct pin-for-pin replacement is not possible due to different package types (TO-220-5 through-hole versus 20-HSOIC surface-mount) and pin configurations. Circuit board redesign and layout modifications are required. Functional substitution is feasible with appropriate circuit adaptation.

Q: What is the maximum supply voltage for the OPA564AIDWP substitute?

A: The OPA564AIDWP operates with a maximum supply voltage of 24 V. Applications requiring the LA6500-E maximum of 30 V cannot use this substitute without alternative voltage regulation or different component selection.

Q: Are there performance differences in output current capability?

A: The OPA564AIDWP provides 1.5 A output current per channel, exceeding the LA6500-E specification of 1 A. This represents a 50% performance improvement and ensures compatibility with applications designed for the original part's current requirements.

Q: How do the slew rate specifications compare?

A: The OPA564AIDWP slew rate is 40 V/µs compared to the LA6500-E at 0.15 V/µs. The substitute part exhibits approximately 267 times faster slew rate performance, enabling applications requiring higher-speed signal transitions.

Q: What are the input bias current differences?

A: The LA6500-E specifies 100 nA input bias current, while the OPA564AIDWP specifies 10 pA. The substitute part demonstrates 10,000 times lower input bias current, reducing input loading effects and improving signal source compatibility.

Q: Is the operating temperature range compatible?

A: The OPA564AIDWP operating range (-40°C to 85°C) encompasses the LA6500-E range (-20°C to 75°C). The substitute part provides extended low-temperature operation to -40°C and extended high-temperature operation to 85°C.

Q: Do both parts maintain equivalent regulatory compliance?

A: Both the LA6500-E and OPA564AIDWP are ROHS3 compliant and REACH unaffected. Regulatory compliance is maintained with substitution.

Q: What packaging considerations apply to board redesign?

A: The LA6500-E TO-220-5 package requires through-hole mounting with lead spacing and hole diameter specifications. The OPA564AIDWP 20-HSOIC package requires surface-mount land patterns with 0.295-inch (7.50 mm) width. PCB layout, thermal management approach, and component placement strategy differ significantly between packages.