LOG101AIDG4 Equivalent & Substitute Parts

Part Overview

The LOG101AIDG4 is a logarithmic and log ratio amplifier integrated circuit manufactured by Texas Instruments in an 8-SOIC surface mount package. This device is classified as obsolete, indicating it has been discontinued and is no longer in active production. The LOG101AIDG4 remains available through existing inventory channels with 1161 pieces in stock.

Due to its obsolete status, identifying equivalent and substitute parts is essential for ongoing design support, maintenance, and production continuity. The LOG101AID serves as the active production alternative, offering identical electrical and mechanical specifications with the advantage of current manufacturer support and availability.

Substiute Parts

LOG101AIDG4

Texas InstrumentsIn Stock: 1230LOG101AIDG4 Datasheet

Current PartRFQ

LOG101AID

Texas InstrumentsIn Stock: 2446LOG101AID Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LOG101AIDG4 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Amplifier type classification (Logarithmic and Log Ratio)
• Number of circuits (1)
• -3dB bandwidth (45 kHz)
• Input bias current (5 pA)
• Input offset voltage (300 µV)
• Supply current (1 mA)
• Supply voltage range (9 V to 36 V minimum and maximum)
• Operating temperature range (-5°C to 75°C)

Mechanical Equivalence Criteria:

• Package type (8-SOIC)
• Package dimensions (0.154", 3.90mm Width)
• Mounting type (Surface Mount)

Compliance Equivalence Criteria:

• RoHS3 compliance status
• Moisture sensitivity level (MSL 3, 168 Hours)

The LOG101AID meets all electrical, mechanical, and compliance requirements for direct substitution with the LOG101AIDG4. The primary distinction is product status: LOG101AIDG4 is obsolete while LOG101AID is active production.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Production: The LOG101AID is the appropriate selection for all new applications. This part carries active product status from Texas Instruments, ensuring ongoing manufacturer support, documentation availability, and supply chain reliability. The LOG101AID is ROHS3 compliant and maintains identical electrical and mechanical specifications to the LOG101AIDG4.

For Existing Inventory Management: The LOG101AIDG4 remains functionally equivalent and may be used to fulfill existing stock requirements. However, transition planning to LOG101AID is recommended to ensure long-term supply continuity and compliance with current manufacturing standards.

Compliance Considerations: Both parts meet ROHS3 compliance requirements and carry identical moisture sensitivity ratings (MSL 3, 168 Hours). No additional handling or storage modifications are required when transitioning between these parts.

Frequently Asked Questions (FAQ)

Q: Can LOG101AID directly replace LOG101AIDG4 in existing designs?

A: Yes. The LOG101AID provides direct functional and mechanical replacement. All electrical parameters, package dimensions, and mounting specifications are identical. No circuit modifications or PCB layout changes are required.

Q: What is the primary difference between LOG101AIDG4 and LOG101AID?

A: The LOG101AIDG4 is classified as obsolete, while LOG101AID is in active production. Both parts are manufactured by Texas Instruments and share identical electrical and mechanical specifications. The LOG101AID is supplied in tube packaging format.

Q: Are there any compliance differences between these parts?

A: No. Both LOG101AIDG4 and LOG101AID are ROHS3 compliant with identical moisture sensitivity levels (MSL 3, 168 Hours). No compliance-related design changes are necessary when substituting between these parts.

Q: What is the 8-SOIC package specification?

A: The 8-SOIC package is a surface mount integrated circuit package with 8 pins. The package width is 0.154 inches (3.90 millimeters). This package type is standard for both the LOG101AIDG4 and LOG101AID.

Q: Is the supply voltage range identical for both parts?

A: Yes. Both parts operate across a supply voltage range of 9 V minimum to 36 V maximum. Operating temperature range is also identical at -5°C to 75°C.

Q: What is the input bias current specification?

A: Both parts specify an input bias current of 5 picoamperes (pA), which is characteristic of logarithmic amplifier designs with high input impedance.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Both parts use identical 8-SOIC surface mount packaging with the same pin configuration, footprint, and soldering requirements. No assembly process modifications are necessary.