OPA1632DGNG4 Equivalent & Substitute Parts

Part Overview

The OPA1632DGNG4 is a single-channel audio amplifier integrated circuit manufactured by Texas Instruments, designed for differential output applications. This device operates across a wide supply voltage range of 5V to 32V and delivers high-speed audio amplification with a slew rate of 50V/µs and -3dB bandwidth of 180 MHz. The OPA1632DGNG4 is classified as Last Time Buy, indicating that the manufacturer has discontinued or will discontinue production. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Substiute Parts

OPA1632DGNG4

Texas InstrumentsIn Stock: 861OPA1632DGNG4 Datasheet

Current PartRFQ

OPA1632DGN

Texas InstrumentsIn Stock: 2210OPA1632DGN Datasheet

MFR RecommendedRFQ

OPA1632DGNR

Texas InstrumentsIn Stock: 15405OPA1632DGNR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the OPA1632DGNG4 are identified based on strict electrical and mechanical parameter equivalence. The substitution logic is based on the following critical parameters that must remain constant across all equivalent devices:

Electrical Parameters (Must Match):

• Amplifier Type: Audio
• Number of Circuits: 1
• Output Type: Differential
• Slew Rate: 50V/µs
• -3dB Bandwidth: 180 MHz
• Current - Input Bias: 2 µA
• Voltage - Input Offset: 500 µV
• Current - Supply: 14 mA
• Current - Output / Channel: 85 mA
• Voltage - Supply Span: 5V to 32V
• Operating Temperature Range: -40°C to 85°C

Mechanical Parameters (Must Match):

• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
• Supplier Device Package: 8-HVSSOP

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

The OPA1632DGNG4 shares the same base product number (OPA1632) with its substitute parts. Variations in the part number suffix indicate differences in packaging format and product status only, not in electrical performance or functional characteristics.

Parameter Comparison

Engineering Selection Recommendations

All three parts—OPA1632DGNG4, OPA1632DGN, and OPA1632DGNR—are electrically and functionally identical. The differences between these parts are limited to packaging format and product lifecycle status.

OPA1632DGNG4 (Original Part): Supplied in Tube packaging with Last Time Buy status. This part number indicates the manufacturer has ceased or will cease production. Existing inventory is 778 pieces.

OPA1632DGN (Substitute Part): Supplied in Tube packaging with Last Time Buy status. This part is functionally equivalent to OPA1632DGNG4 with higher available inventory of 2200 pieces. The Tube packaging format is identical to the original part.

OPA1632DGNR (Recommended Substitute): Supplied in Cut Tape (CT) & Digi-Reel® packaging with Active product status. This part is the manufacturer-recommended substitute and represents the current production variant. It maintains full electrical and mechanical equivalence while offering the highest inventory availability at 15333 pieces and ongoing manufacturing support.

For new designs or long-term supply requirements, OPA1632DGNR is the appropriate selection due to its Active status and continuous availability. For applications requiring Tube packaging specifically, OPA1632DGN provides equivalent functionality with higher inventory than the original OPA1632DGNG4. All three parts meet ROHS3 compliance, REACH requirements, and MSL Level 1 specifications.

Frequently Asked Questions (FAQ)

Q: Are OPA1632DGNG4, OPA1632DGN, and OPA1632DGNR electrically interchangeable?

A: Yes. All three parts share identical electrical specifications including slew rate, bandwidth, input bias current, output current capability, and supply voltage range. They are direct functional equivalents.

Q: What is the difference between these part numbers?

A: The differences are limited to packaging format and product status. OPA1632DGNG4 and OPA1632DGN are supplied in Tube packaging, while OPA1632DGNR is supplied in Cut Tape (CT) & Digi-Reel® packaging. OPA1632DGNR has Active product status, indicating ongoing manufacturing, while the other two are Last Time Buy.

Q: Can I use OPA1632DGNR as a direct replacement for OPA1632DGNG4 on existing PCBs?

A: Yes. The package type (8-HVSSOP) and pin configuration are identical. The only consideration is the packaging format received from the supplier—Cut Tape versus Tube—which does not affect PCB assembly compatibility.

Q: Which part should I specify for a new design?

A: OPA1632DGNR is the recommended choice for new designs. It carries Active product status, ensuring long-term availability and manufacturing support from Texas Instruments.

Q: Are there any compliance or environmental differences between these parts?

A: No. All three parts are ROHS3 Compliant, REACH Unaffected, and carry MSL Level 1 (Unlimited) moisture sensitivity rating. Environmental and regulatory compliance is identical across all variants.

Q: What does "Last Time Buy" status mean?

A: Last Time Buy indicates that the manufacturer has announced the end of production for that specific part number. Existing inventory may still be available, but no new manufacturing runs are planned. OPA1632DGNG4 and OPA1632DGN carry this status.

Q: If I need Tube packaging specifically, which part should I order?

A: Both OPA1632DGNG4 and OPA1632DGN are available in Tube packaging. OPA1632DGN offers higher inventory availability (2200 pieces) compared to OPA1632DGNG4 (778 pieces).

Q: Can I mix parts from different packaging formats in the same production run?

A: Yes. From an electrical and functional standpoint, OPA1632DGNR (Cut Tape & Digi-Reel) is fully compatible with OPA1632DGNG4 and OPA1632DGN (Tube). The packaging format affects only the supplier delivery method and does not impact circuit performance or PCB assembly.