LOG114AIRGVRG4 Equivalent & Substitute Parts

Part Overview

The LOG114AIRGVRG4 is a logarithmic amplifier integrated circuit manufactured by Texas Instruments, designed for precision signal processing applications requiring logarithmic transfer characteristics. This device integrates one logarithmic amplifier circuit in a 16-VQFN (4x4) surface mount package with exposed pad.

The LOG114AIRGVRG4 is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this logarithmic amplifier topology.

Substiute Parts

LOG114AIRGVRG4

Texas InstrumentsIn Stock: 1025LOG114AIRGVRG4 Datasheet

Current PartRFQ

LOG114AIRGVR

Texas InstrumentsIn Stock: 61810LOG114AIRGVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LOG114AIRGVRG4 is determined by strict equivalence across all electrical and mechanical parameters. The primary substitute part LOG114AIRGVR shares identical specifications across all critical performance criteria:

Key Parameters Determining Substitution:

• Amplifier Type: Logarithmic (identical)
• Number of Circuits: 1 (identical)
• Slew Rate: 5 V/µs (identical)
• Gain Bandwidth Product: 15 MHz (identical)
• -3dB Bandwidth: 5 MHz (identical)
• Input Bias Current: 5 pA (identical)
• Input Offset Voltage: 100 µV (identical)
• Supply Current: 10 mA (identical)
• Supply Voltage Range: 4.8 V to 11 V (identical)
• Operating Temperature: -5°C to 75°C (identical)
• Package: 16-VQFN Exposed Pad (identical)
• RoHS Compliance: ROHS3 Compliant (identical)
• MSL Rating: 2 (1 Year) (identical)

The LOG114AIRGVR differs only in packaging format (Cut Tape and Digi-Reel) and product status (Active vs. Discontinued), with no electrical or mechanical parameter variations.

Parameter Comparison

Engineering Selection Recommendations

The LOG114AIRGVR is the direct substitute for the discontinued LOG114AIRGVRG4. Both parts are manufactured by Texas Instruments and share identical electrical specifications, performance characteristics, and mechanical package dimensions.

Selection Basis:

The LOG114AIRGVR maintains full compatibility with designs originally specified for the LOG114AIRGVRG4. All functional parameters, including logarithmic amplifier performance, bandwidth characteristics, supply voltage requirements, and operating temperature range, are identical between the two parts.

The LOG114AIRGVR carries Active product status, ensuring ongoing availability and supply chain support. Both parts maintain ROHS3 compliance and identical MSL ratings, supporting equivalent handling and storage requirements in manufacturing environments.

The packaging format difference (Cut Tape and Digi-Reel availability for the substitute) represents a supply chain advantage, as the LOG114AIRGVR is available in multiple packaging configurations with significantly higher inventory levels (61,715 pieces in stock versus 933 pieces for the discontinued variant).

Frequently Asked Questions (FAQ)

Q: Can LOG114AIRGVR be used as a direct replacement for LOG114AIRGVRG4 in existing designs?

A: Yes. The LOG114AIRGVR is electrically and mechanically identical to the LOG114AIRGVRG4. All performance parameters, package dimensions, pin configurations, and electrical characteristics are equivalent. No design modifications are required.

Q: What is the difference between LOG114AIRGVRG4 and LOG114AIRGVR?

A: The primary differences are product status and packaging format. The LOG114AIRGVRG4 is discontinued, while the LOG114AIRGVR is an active product. The LOG114AIRGVR is available in Cut Tape and Digi-Reel packaging formats. All electrical and mechanical specifications are identical.

Q: Are the package dimensions identical between these parts?

A: Yes. Both parts use the 16-VQFN (4x4) package with exposed pad. The physical dimensions, pin pitch, and PCB footprint are identical, enabling direct substitution without layout modifications.

Q: Do both parts have the same RoHS and MSL compliance?

A: Yes. Both the LOG114AIRGVRG4 and LOG114AIRGVR are ROHS3 compliant with MSL rating 2 (1 Year). Handling, storage, and environmental compliance requirements are identical.

Q: What is the supply voltage range for these logarithmic amplifiers?

A: Both parts operate with a supply voltage range of 4.8 V to 11 V. The logarithmic amplifier circuit requires this voltage span for proper operation across the specified temperature range of -5°C to 75°C.

Q: Is the LOG114AIRGVR available in higher quantities?

A: Yes. The LOG114AIRGVR has significantly higher inventory availability (61,715 pieces in stock) compared to the discontinued LOG114AIRGVRG4 (933 pieces). The substitute part is available in multiple packaging formats including Cut Tape and Digi-Reel options.